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116-482: Aeolian-Skinner Organ Company, Inc. of Boston, Massachusetts was an American builder of a large number of pipe organs from its inception as the Skinner Organ Company in 1901 until its closure in 1972. Key figures were Ernest M. Skinner (1866–1960), Arthur Hudson Marks (1875–1939), Joseph Silver Whiteford (1921-1978), and G. Donald Harrison (1889–1956). The company was formed from the merger of

232-596: A Bachelor's degree or higher qualification. Some possess a degree in acoustics, while others enter the discipline via studies in fields such as physics or engineering . Much work in acoustics requires a good grounding in Mathematics and science . Many acoustic scientists work in research and development. Some conduct basic research to advance our knowledge of the perception (e.g. hearing , psychoacoustics or neurophysiology ) of speech , music and noise . Other acoustic scientists advance understanding of how sound

348-490: A cannon barrage for two hours, but their shot could not reach the colonists' cannons at such a height. The British gave up, boarded their ships, and sailed away. This has become known as " Evacuation Day ", which Boston still celebrates each year on March 17. After this, Washington was so impressed that he made Rufus Putnam his chief engineer. After the Revolution, Boston's long seafaring tradition helped make it one of

464-572: A definite mathematical structure. The wave equation emerged in a number of contexts, including the propagation of sound in air. In the nineteenth century the major figures of mathematical acoustics were Helmholtz in Germany, who consolidated the field of physiological acoustics, and Lord Rayleigh in England, who combined the previous knowledge with his own copious contributions to the field in his monumental work The Theory of Sound (1877). Also in

580-591: A descriptive discussion written over both sides of the LP cover by Tyler Turner and Joseph Whiteford on the beginnings of the American classic organ. The five recorded sections on the record, with G. Donald Harrison as narrator describing the five selections, are "I-Principals", "II-Flutes", "III-Strings", "IV-Reeds", and "V-Mixtures and Mutations". Organ demonstrations come from the Aeolian-Skinner organs of St. John

696-529: A global leader in higher education and research and the largest biotechnology hub in the world. The city is also a national leader in scientific research, law, medicine, engineering, and business. With nearly 5,000 startup companies, the city is considered a global pioneer in innovation and entrepreneurship , and more recently in artificial intelligence . Boston's economy also includes finance , professional and business services, information technology , and government activities. Boston households provide

812-558: A great deal, but retained and perfected many of Ernest Skinner's mechanical innovations. The company used Skinner's Pitman windchest , for example, throughout its existence. Also the high quality and distinctive design details of the Aeolian-Skinner console were preserved. Instruments built or rebuilt during the Harrison period include (date, consoles/ranks): After Harrison's death in June 1956, former Vice President Joseph S. Whiteford

928-624: A lively port , and the then-town primarily engaged in shipping and fishing during its colonial days. Boston was a primary stop on a Caribbean trade route and imported large amounts of molasses, which led to the creation of Boston baked beans . Boston's economy stagnated in the decades prior to the Revolution. By the mid-18th century, New York City and Philadelphia had surpassed Boston in wealth. During this period, Boston encountered financial difficulties even as other cities in New England grew rapidly. The weather continuing boisterous

1044-458: A million residents, and the most densely populated state capital. Some 1.2 million persons may be within Boston's boundaries during work hours, and as many as 2 million during special events. This fluctuation of people is caused by hundreds of thousands of suburban residents who travel to the city for work, education, health care, and special events. Acoustics Hearing is one of

1160-475: A pair of bombs near the finish line of the Boston Marathon , killing three people and injuring roughly 264. The subsequent search for the bombers led to a lock-down of Boston and surrounding municipalities. The region showed solidarity during this time as symbolized by the slogan Boston Strong . In 2016, Boston briefly shouldered a bid as the U.S. applicant for the 2024 Summer Olympics . The bid

1276-540: A population of 675,647 as of the 2020 census , making it the third-largest city in the Northeast after New York City and Philadelphia . The larger Greater Boston metropolitan statistical area has a population of 4.9 million as of 2023, making it the largest in New England and the eleventh-largest in the country . Boston was founded on the Shawmut Peninsula in 1630 by Puritan settlers. The city

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1392-565: A project to improve the historic West End neighborhood. Extensive demolition was met with strong public opposition, and thousands of families were displaced. The BRA continued implementing eminent domain projects, including the clearance of the vibrant Scollay Square area for construction of the modernist style Government Center . In 1965, the Columbia Point Health Center opened in the Dorchester neighborhood,

1508-400: A result of varying auditory stimulus which can in turn affect the way one thinks, feels, or even behaves. This correlation can be viewed in normal, everyday situations in which listening to an upbeat or uptempo song can cause one's foot to start tapping or a slower song can leave one feeling calm and serene. In a deeper biological look at the phenomenon of psychoacoustics, it was discovered that

1624-405: A rock concert. The central stage in the acoustical process is wave propagation. This falls within the domain of physical acoustics. In fluids , sound propagates primarily as a pressure wave . In solids, mechanical waves can take many forms including longitudinal waves , transverse waves and surface waves . Acoustics looks first at the pressure levels and frequencies in the sound wave and how

1740-456: A sound wave to or from an electric signal. The most widely used transduction principles are electromagnetism , electrostatics and piezoelectricity . The transducers in most common loudspeakers (e.g. woofers and tweeters ), are electromagnetic devices that generate waves using a suspended diaphragm driven by an electromagnetic voice coil , sending off pressure waves. Electret microphones and condenser microphones employ electrostatics—as

1856-407: A string sounds the note C when plucked, a string twice as long will sound a C an octave lower. In one system of musical tuning , the tones in between are then given by 16:9 for D, 8:5 for E, 3:2 for F, 4:3 for G, 6:5 for A, and 16:15 for B, in ascending order. Aristotle (384–322 BC) understood that sound consisted of compressions and rarefactions of air which "falls upon and strikes the air which

1972-401: A violent tornado , the city itself has experienced many tornado warnings . Damaging storms are more common to areas north, west, and northwest of the city. See or edit raw graph data . In 2020, Boston was estimated to have 691,531 residents living in 266,724 households —a 12% population increase over 2010. The city is the third-most densely populated large U.S. city of over half

2088-438: A wave comparable to a water wave extended to three dimensions, which, when interrupted by obstructions, would flow back and break up following waves. He described the ascending seats in ancient theaters as designed to prevent this deterioration of sound and also recommended bronze vessels (echea) of appropriate sizes be placed in theaters to resonate with the fourth, fifth and so on, up to the double octave, in order to resonate with

2204-465: A way of echolocation in the caves. In archaeology, acoustic sounds and rituals directly correlate as specific sounds were meant to bring ritual participants closer to a spiritual awakening. Parallels can also be drawn between cave wall paintings and the acoustic properties of the cave; they are both dynamic. Because archaeoacoustics is a fairly new archaeological subject, acoustic sound is still being tested in these prehistoric sites today. Aeroacoustics

2320-444: Is "sonic", after which the term sonics used to be a synonym for acoustics and later a branch of acoustics. Frequencies above and below the audible range are called " ultrasonic " and " infrasonic ", respectively. In the 6th century BC, the ancient Greek philosopher Pythagoras wanted to know why some combinations of musical sounds seemed more beautiful than others, and he found answers in terms of numerical ratios representing

2436-505: Is 2 °F (−17 °C) on December 30, 1917, while the record warm daily minimum is 83 °F (28 °C) on both August 2, 1975 and July 21, 2019. Boston averages 43.6 in (1,110 mm) of precipitation a year, with 49.2 in (125 cm) of snowfall per season. Most snowfall occurs from mid-November through early April, and snow is rare in May and October. There is also high year-to-year variability in snowfall; for instance,

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2552-508: Is July, with a mean temperature of 74.1 °F (23.4 °C). The coldest month is January, with a mean temperature of 29.9 °F (−1.2 °C). Periods exceeding 90 °F (32 °C) in summer and below freezing in winter are not uncommon but tend to be fairly short, with about 13 and 25 days per year seeing each, respectively. Sub- 0 °F (−18 °C) readings usually occur every 3 to 5 years. The most recent sub- 0 °F (−18 °C) reading occurred on February 4, 2023, when

2668-513: Is affected as it moves through environments, e.g. underwater acoustics , architectural acoustics or structural acoustics . Other areas of work are listed under subdisciplines below. Acoustic scientists work in government, university and private industry laboratories. Many go on to work in Acoustical Engineering . Some positions, such as Faculty (academic staff) require a Doctor of Philosophy . Archaeoacoustics , also known as

2784-547: Is an intellectual, technological, and political center. However, it has lost some important regional institutions, including the loss to mergers and acquisitions of local financial institutions such as FleetBoston Financial , which was acquired by Charlotte -based Bank of America in 2004. Boston-based department stores Jordan Marsh and Filene's have both merged into the New York City –based Macy's . The 1993 acquisition of The Boston Globe by The New York Times

2900-416: Is concerned with noise and vibration caused by railways, road traffic, aircraft, industrial equipment and recreational activities. The main aim of these studies is to reduce levels of environmental noise and vibration. Research work now also has a focus on the positive use of sound in urban environments: soundscapes and tranquility . Musical acoustics is the study of the physics of acoustic instruments;

3016-408: Is defined by ANSI/ASA S1.1-2013 as "(a) Science of sound , including its production, transmission, and effects, including biological and psychological effects. (b) Those qualities of a room that, together, determine its character with respect to auditory effects." The study of acoustics revolves around the generation, propagation and reception of mechanical waves and vibrations. The steps shown in

3132-430: Is how our ears interpret sound. What we experience as "higher pitched" or "lower pitched" sounds are pressure vibrations having a higher or lower number of cycles per second. In a common technique of acoustic measurement, acoustic signals are sampled in time, and then presented in more meaningful forms such as octave bands or time frequency plots. Both of these popular methods are used to analyze sound and better understand

3248-588: Is in Roxbury . Due north of the center we find the South End. This is not to be confused with South Boston which lies directly east from the South End. North of South Boston is East Boston and southwest of East Boston is the North End Unknown, A local colloquialism Boston has an area of 89.63 sq mi (232.1 km ). Of this area, 48.4 sq mi (125.4 km ), or 54%, of it

3364-410: Is land and 41.2 sq mi (106.7 km ), or 46%, of it is water. The city's elevation, as measured at Logan International Airport , is 19 ft (5.8 m) above sea level . The highest point in Boston is Bellevue Hill at 330 ft (100 m) above sea level, and the lowest point is at sea level. The city is adjacent to Boston Harbor , an arm of Massachusetts Bay , and by extension,

3480-628: Is next to it...", a very good expression of the nature of wave motion. On Things Heard , generally ascribed to Strato of Lampsacus , states that the pitch is related to the frequency of vibrations of the air and to the speed of sound. In about 20 BC, the Roman architect and engineer Vitruvius wrote a treatise on the acoustic properties of theaters including discussion of interference, echoes, and reverberation—the beginnings of architectural acoustics . In Book V of his De architectura ( The Ten Books of Architecture ) Vitruvius describes sound as

3596-416: Is the electronic manipulation of acoustic signals. Applications include: active noise control ; design for hearing aids or cochlear implants ; echo cancellation ; music information retrieval , and perceptual coding (e.g. MP3 or Opus ). Architectural acoustics (also known as building acoustics) involves the scientific understanding of how to achieve good sound within a building. It typically involves

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3712-431: Is the scientific study of the hearing and calls of animal calls, as well as how animals are affected by the acoustic and sounds of their habitat. This subdiscipline is concerned with the recording, manipulation and reproduction of audio using electronics. This might include products such as mobile phones , large scale public address systems or virtual reality systems in research laboratories. Environmental acoustics

3828-413: Is the study of noise generated by air movement, for instance via turbulence, and the movement of sound through the fluid air. This knowledge was applied in the 1920s and '30s to detect aircraft before radar was invented and is applied in acoustical engineering to study how to quieten aircraft . Aeroacoustics is important for understanding how wind musical instruments work. Acoustic signal processing

3944-460: Is usually small, it is still noticeable to the human ear. The smallest sound that a person can hear, known as the threshold of hearing , is nine orders of magnitude smaller than the ambient pressure. The loudness of these disturbances is related to the sound pressure level (SPL) which is measured on a logarithmic scale in decibels. Physicists and acoustic engineers tend to discuss sound pressure levels in terms of frequencies, partly because this

4060-508: The Arbella ) and John Cotton (grandfather of Cotton Mather ) had emigrated to New England . The name of the English town ultimately derives from its patron saint, St. Botolph , in whose church John Cotton served as the rector until his emigration with Johnson. In early sources, Lincolnshire's Boston was known as "St. Botolph's town", later contracted to "Boston". Before this renaming,

4176-815: The American Revolution occurred in or near Boston. The then-town's mob presence, along with the colonists' growing lack of faith in either Britain or its Parliament , fostered a revolutionary spirit there. When the British parliament passed the Stamp Act in 1765, a Boston mob ravaged the homes of Andrew Oliver , the official tasked with enforcing the Act, and Thomas Hutchinson , then the Lieutenant Governor of Massachusetts. The British sent two regiments to Boston in 1768 in an attempt to quell

4292-585: The Boston Garden opening in 1928. Logan International Airport opened on September 8, 1923. Boston went into decline by the early to mid-20th century, as factories became old and obsolete and businesses moved out of the region for cheaper labor elsewhere. Boston responded by initiating various urban renewal projects, under the direction of the Boston Redevelopment Authority (BRA) established in 1957. In 1958, BRA initiated

4408-625: The Boston Public Library , Trinity Church, single-family homes and wooden/brick multi-family row houses. The South End Historic District is the largest surviving contiguous Victorian-era neighborhood in the US. The geography of downtown and South Boston was particularly affected by the Central Artery/Tunnel Project (which ran from 1991 to 2007, and was known unofficially as the " Big Dig "). That project removed

4524-612: The Massachusetts Bay Colony and was signed by its first governor John Winthrop . Puritan ethics and their focus on education also influenced the early history of the city. America's first public school, Boston Latin School , was founded in Boston in 1635. Boston was the largest town in the Thirteen Colonies until Philadelphia outgrew it in the mid-18th century. Boston's oceanfront location made it

4640-537: The North End , and the Seaport . Boston is sometimes called a "city of neighborhoods" because of the profusion of diverse subsections. The city government's Office of Neighborhood Services has officially designated 23 neighborhoods: More than two-thirds of inner Boston's modern land area did not exist when the city was founded. Instead, it was created via the gradual filling in of the surrounding tidal areas over

4756-686: The Skinner Organ Company and the pipe organ division of the Aeolian Company in 1932. The Skinner & Cole Company was formed in 1902 as a partnership of Ernest Skinner and Cole, another former Hutchings-Votey employee. By 1904 the partnership had dissolved, and the "Ernest M. Skinner & Company" purchased the Skinner and Cole assets, in the form of the contract for the Evangelical Lutheran Church of

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4872-652: The South End , the West End , the Financial District , and Chinatown . After the Great Boston fire of 1872 , workers used building rubble as landfill along the downtown waterfront. During the mid-to-late 19th century, workers filled almost 600 acres (240 ha) of brackish Charles River marshlands west of Boston Common with gravel brought by rail from the hills of Needham Heights. The city annexed

4988-688: The audio signal processing used in electronic music; the computer analysis of music and composition, and the perception and cognitive neuroscience of music . The goal this acoustics sub-discipline is to reduce the impact of unwanted sound. Scope of noise studies includes the generation, propagation, and impact on structures, objects, and people. Noise research investigates the impact of noise on humans and animals to include work in definitions, abatement, transportation noise, hearing protection, Jet and rocket noise, building system noise and vibration, atmospheric sound propagation, soundscapes , and low-frequency sound. Many studies have been conducted to identify

5104-444: The harmonic overtone series on a string. He is reputed to have observed that when the lengths of vibrating strings are expressible as ratios of integers (e.g. 2 to 3, 3 to 4), the tones produced will be harmonious, and the smaller the integers the more harmonious the sounds. For example, a string of a certain length would sound particularly harmonious with a string of twice the length (other factors being equal). In modern parlance, if

5220-555: The speed of sound in air were carried out successfully between 1630 and 1680 by a number of investigators, prominently Mersenne. Meanwhile, Newton (1642–1727) derived the relationship for wave velocity in solids, a cornerstone of physical acoustics ( Principia , 1687). Substantial progress in acoustics, resting on firmer mathematical and physical concepts, was made during the eighteenth century by Euler (1707–1783), Lagrange (1736–1813), and d'Alembert (1717–1783). During this era, continuum physics, or field theory, began to receive

5336-412: The 1970s, the city's economy had begun to recover after 30 years of economic downturn. A large number of high-rises were constructed in the Financial District and in Boston's Back Bay during this period. This boom continued into the mid-1980s and resumed after a few pauses. Hospitals such as Massachusetts General Hospital , Beth Israel Deaconess Medical Center , and Brigham and Women's Hospital lead

5452-457: The 19th century, Boston's core neighborhoods had become enclaves of ethnically distinct immigrants with their residence yielding lasting cultural change. Italians became the largest inhabitants of the North End , Irish dominated South Boston and Charlestown , and Russian Jews lived in the West End . Irish and Italian immigrants brought with them Roman Catholicism. Currently, Catholics make up Boston's largest religious community, and

5568-415: The 19th century, Wheatstone, Ohm, and Henry developed the analogy between electricity and acoustics. The twentieth century saw a burgeoning of technological applications of the large body of scientific knowledge that was by then in place. The first such application was Sabine 's groundbreaking work in architectural acoustics, and many others followed. Underwater acoustics was used for detecting submarines in

5684-643: The 20th century: Horticultural Hall , the Tennis and Racquet Club , Isabella Stewart Gardner Museum , Fenway Studios , Jordan Hall , and the Boston Opera House .  The Longfellow Bridge , built in 1906, was mentioned by Robert McCloskey in Make Way for Ducklings , describing its "salt and pepper shakers" feature. Fenway Park , home of the Boston Red Sox , opened in 1912, with

5800-598: The Atlantic Ocean. Boston is surrounded by the Greater Boston metropolitan region. It is bordered to the east by the town of Winthrop and the Boston Harbor Islands , to the northeast by the cities of Revere , Chelsea and Everett , to the north by the cities of Somerville and Cambridge , to the northwest by Watertown , to the west by the city of Newton and town of Brookline , to

5916-743: The Divine, Symphony Hall, St. Paul's Cathedral (Boston), and First Presbyterian Church, Kilgore, Texas. Boston, Massachusetts Boston is the capital and most populous city in the Commonwealth of Massachusetts in the United States . The city serves as the cultural and financial center of the New England region of the Northeastern United States . It has an area of 48.4 sq mi (125 km ) and

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6032-578: The Holy Trinity in New York City from the former company for $ 1. Between 1904 and 1910, the firm produced approximately 30 instruments, including several new instruments of Skinner's design, in the 60- to 80-stop size range. By 1912 the firm had perfected the "Pitman Windchest" to a state of simple technical elegance. (A "wind chest" is the large box, normally built of wood, upon which the sound producing pipes are "planted", and which contains

6148-512: The Irish have played a major role in Boston politics since the early 20th century; prominent figures include the Kennedys , Tip O'Neill , and John F. Fitzgerald . Between 1631 and 1890, the city tripled its area through land reclamation by filling in marshes, mud flats, and gaps between wharves along the waterfront. Reclamation projects in the middle of the century created significant parts of

6264-579: The John Hancock Tower is the old John Hancock Building with its prominent illuminated beacon , the color of which forecasts the weather. Downtown and its immediate surroundings (including the Financial District, Government Center, and South Boston ) consist largely of low-rise masonry buildings – often federal style and Greek revival – interspersed with modern high-rises. Back Bay includes many prominent landmarks, such as

6380-563: The Native people, as many had died of European diseases brought by early settlers and traders. Archaeological excavations unearthed one of the oldest fishweirs in New England on Boylston Street , which Native people constructed as early as 7,000 years before European arrival in the Western Hemisphere. The first European to live in what would become Boston was a Cambridge -educated Anglican cleric named William Blaxton . He

6496-602: The Pitman windchest to this day, although most have only recently begun to credit Skinner with the design and subsequent refinements that make it an industry benchmark. Skinner also developed and perfected numerous parts of the "actions" for the instruments, as well as the Whiffletree Shade Motor, a mechanical device that moves the expression shades in a smooth, fluid motion without the "slam" that often accompanies mechanical expression shade controls. This allowed

6612-735: The Renew Boston Whole Building Incentive which reduces the cost of living in buildings that are deemed energy efficient. Under the Köppen climate classification , Boston has either a hot-summer humid continental climate (Köppen Dfa ) under the 0 °C (32.0 °F) isotherm or a humid subtropical climate (Köppen Cfa ) under the −3 °C (26.6 °F) isotherm. Summers are warm to hot and humid, while winters are cold and stormy, with occasional periods of heavy snow. Spring and fall are usually cool and mild, with varying conditions dependent on wind direction and

6728-469: The Whiteford period include: After the Whiteford's resignation in 1966, John J. Tyrell, Donald M. Gillett, and Robert L. Sipe served as president until the company ceased operations in 1972. Beginning in 1954, Aeolian-Skinner produced a series of LP records titled The King of Instruments . These LPs are devoted to the tone and history of the modern organ. Volume 1, The American Classic Organ , contains

6844-461: The above diagram can be found in any acoustical event or process. There are many kinds of cause, both natural and volitional. There are many kinds of transduction process that convert energy from some other form into sonic energy, producing a sound wave. There is one fundamental equation that describes sound wave propagation, the acoustic wave equation , but the phenomena that emerge from it are varied and often complex. The wave carries energy throughout

6960-594: The acoustic phenomenon. The entire spectrum can be divided into three sections: audio, ultrasonic, and infrasonic. The audio range falls between 20 Hz and 20,000 Hz. This range is important because its frequencies can be detected by the human ear. This range has a number of applications, including speech communication and music. The ultrasonic range refers to the very high frequencies: 20,000 Hz and higher. This range has shorter wavelengths which allow better resolution in imaging technologies. Medical applications such as ultrasonography and elastography rely on

7076-681: The act as an attempt to force them to accept the taxes established by the Townshend Acts . The act prompted the Boston Tea Party , where a group of angered Bostonians threw an entire shipment of tea sent by the East India Company into Boston Harbor . The Boston Tea Party was a key event leading up to the revolution, as the British government responded furiously with the Coercive Acts , demanding compensation for

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7192-535: The adjacent towns of South Boston (1804), East Boston (1836), Roxbury (1868), Dorchester (including present-day Mattapan and a portion of South Boston ) (1870), Brighton (including present-day Allston ) (1874), West Roxbury (including present-day Jamaica Plain and Roslindale ) (1874), Charlestown (1874), and Hyde Park (1912). Other proposals were unsuccessful for the annexation of Brookline , Cambridge, and Chelsea . Many architecturally significant buildings were built during these early years of

7308-572: The angry colonists. This did not sit well with the colonists, however. In 1770, during the Boston Massacre , British troops shot into a crowd that had started to violently harass them. The colonists compelled the British to withdraw their troops. The event was widely publicized and fueled a revolutionary movement in America. In 1773, Parliament passed the Tea Act . Many of the colonists saw

7424-429: The archaeology of sound, is one of the only ways to experience the past with senses other than our eyes. Archaeoacoustics is studied by testing the acoustic properties of prehistoric sites, including caves. Iegor Rezkinoff, a sound archaeologist, studies the acoustic properties of caves through natural sounds like humming and whistling. Archaeological theories of acoustics are focused around ritualistic purposes as well as

7540-426: The area. Nevertheless, the city experienced conflict starting in 1974 over desegregation busing , which resulted in unrest and violence around public schools throughout the mid-1970s. Boston has also experienced gentrification in the latter half of the 20th century, with housing prices increasing sharply since the 1990s when the city's rent control regime was struck down by statewide ballot proposition . Boston

7656-493: The central nervous system is activated by basic acoustical characteristics of music. By observing how the central nervous system, which includes the brain and spine, is influenced by acoustics, the pathway in which acoustic affects the mind, and essentially the body, is evident. Acousticians study the production, processing and perception of speech. Speech recognition and Speech synthesis are two important areas of speech processing using computers. The subject also overlaps with

7772-605: The centuries. This was accomplished using earth from the leveling or lowering of Boston's three original hills (the "Trimountain", after which Tremont Street is named), as well as with gravel brought by train from Needham to fill the Back Bay . Christian Science Center , Copley Square , Newbury Street , and New England's two tallest buildings: the John Hancock Tower and the Prudential Center . Near

7888-533: The city continued to play an important role as a port, manufacturing hub, and center for education and culture. The city also expanded significantly beyond the original peninsula by filling in land and annexing neighboring towns. Boston's many firsts include the United States' first public park ( Boston Common , 1634), the first public school ( Boston Latin School , 1635), and the first subway system ( Tremont Street subway , 1897). Boston has emerged as

8004-460: The city government. A climate action plan from 2019 anticipates 2 ft (1 m) to more than 7 ft (2 m) of sea-level rise in Boston by the end of the 21st century. Many older buildings in certain areas of Boston are supported by wooden piles driven into the area's fill; these piles remain sound if submerged in water, but are subject to dry rot if exposed to air for long periods. Groundwater levels have been dropping in many areas of

8120-464: The city often receives sea breezes , especially in the late spring, when water temperatures are still quite cold and temperatures at the coast can be more than 20 °F (11 °C) colder than a few miles inland, sometimes dropping by that amount near midday. Thunderstorms typically occur from May to September; occasionally, they can become severe, with large hail , damaging winds, and heavy downpours. Although downtown Boston has never been struck by

8236-443: The city's economy, and the city's industrial manufacturing overtook international trade in economic importance by the mid-19th century. The small rivers bordering the city and connecting it to the surrounding region facilitated shipment of goods and led to a proliferation of mills and factories. Later, a dense network of railroads furthered the region's industry and commerce. During this period, Boston flourished culturally as well. It

8352-414: The city, due in part to an increase in the amount of rainwater discharged directly into sewers rather than absorbed by the ground. The Boston Groundwater Trust coordinates monitoring groundwater levels throughout the city via a network of public and private monitoring wells. The city developed a climate action plan covering carbon reduction in buildings, transportation, and energy use. The first such plan

8468-526: The commander-in-chief of the British forces in North America, led the British army in the siege. On June 17, the British captured Charlestown (now part of Boston) during the Battle of Bunker Hill . The British army outnumbered the militia stationed there, but it was a pyrrhic victory for the British because their army suffered irreplaceable casualties. It was also a testament to the skill and training of

8584-438: The complete laws of vibrating strings (completing what Pythagoras and Pythagoreans had started 2000 years earlier). Galileo wrote "Waves are produced by the vibrations of a sonorous body, which spread through the air, bringing to the tympanum of the ear a stimulus which the mind interprets as sound", a remarkable statement that points to the beginnings of physiological and psychological acoustics. Experimental measurements of

8700-664: The destroyed tea from the Bostonians. This angered the colonists further and led to the American Revolutionary War . The war began in the area surrounding Boston with the Battles of Lexington and Concord . Boston itself was besieged for almost a year during the siege of Boston , which began on April 19, 1775. The New England militia impeded the movement of the British Army . Sir William Howe , then

8816-536: The disciplines of physics, physiology , psychology , and linguistics . Structural acoustics is the study of motions and interactions of mechanical systems with their environments and the methods of their measurement, analysis, and control. There are several sub-disciplines found within this regime: Applications might include: ground vibrations from railways; vibration isolation to reduce vibration in operating theatres; studying how vibration can damage health ( vibration white finger ); vibration control to protect

8932-466: The elevated Central Artery and incorporated new green spaces and open areas. Boston is located within the Boston Basin ecoregion , which is characterized by low and rolling hills with a number of ponds, lakes, and reservoirs. Forests are mainly transition hardwoods such as oak - hickory mixed with white pine . As a coastal city built largely on fill , sea-level rise is of major concern to

9048-541: The first Community Health Center in the United States. It mostly served the massive Columbia Point public housing complex adjoining it, which was built in 1953. The health center is still in operation and was rededicated in 1990 as the Geiger-Gibson Community Health Center. The Columbia Point complex itself was redeveloped and revitalized from 1984 to 1990 into a mixed-income residential development called Harbor Point Apartments. By

9164-456: The first World War. Sound recording and the telephone played important roles in a global transformation of society. Sound measurement and analysis reached new levels of accuracy and sophistication through the use of electronics and computing. The ultrasonic frequency range enabled wholly new kinds of application in medicine and industry. New kinds of transducers (generators and receivers of acoustic energy) were invented and put to use. Acoustics

9280-461: The first wave of European immigrants . Irish immigrants dominated the first wave of newcomers during this period, especially following the Great Famine ; by 1850, about 35,000 Irish lived in Boston . In the latter half of the 19th century, the city saw increasing numbers of Irish, Germans , Lebanese , Syrians, French Canadians , and Russian and Polish Jews settling there. By the end of

9396-461: The fortifications and dozens of cannons on Dorchester Heights that Henry Knox had laboriously brought through the snow from Fort Ticonderoga . The astonished British awoke the next morning to see a large array of cannons bearing down on them. General Howe is believed to have said that the Americans had done more in one night than his army could have done in six months. The British Army attempted

9512-558: The highest average rate of philanthropy in the nation, and the city's businesses and institutions rank among the top in the nation for environmental sustainability and new investment. Isaac Johnson , in one of his last official acts as the leader of the Charlestown community before he died on September 30, 1630, named the then-new settlement across the river "Boston". The settlement's name came from Johnson's hometown of Boston, Lincolnshire , from which he, his wife (namesake of

9628-616: The instruments to provide quick and responsive control of the expression (volume) levels of the different parts of the instrument. In 1914 the Skinner Organ Factory company moved into a new factory building in the Dorchester neighborhood of Boston at Crescent Avenue and Sydney Street. G. Donald Harrison joined the Skinner firm in July 1927, and slowly began to influence how Skinner organs were built. After several years of conflict between Ernest Skinner and Arthur Marks, Harrison

9744-536: The militia, as their stubborn defense made it difficult for the British to capture Charlestown without suffering further irreplaceable casualties. Several weeks later, George Washington took over the militia after the Continental Congress established the Continental Army to unify the revolutionary effort. Both sides faced difficulties and supply shortages in the siege, and the fighting

9860-605: The more desirable, harmonious notes. During the Islamic golden age , Abū Rayhān al-Bīrūnī (973–1048) is believed to have postulated that the speed of sound was much slower than the speed of light. The physical understanding of acoustical processes advanced rapidly during and after the Scientific Revolution . Mainly Galileo Galilei (1564–1642) but also Marin Mersenne (1588–1648), independently, discovered

9976-512: The most crucial means of survival in the animal world and speech is one of the most distinctive characteristics of human development and culture. Accordingly, the science of acoustics spreads across many facets of human society—music, medicine, architecture, industrial production, warfare and more. Likewise, animal species such as songbirds and frogs use sound and hearing as a key element of mating rituals or for marking territories. Art, craft, science and technology have provoked one another to advance

10092-634: The nation in medical innovation and patient care. Schools such as the Boston Architectural College , Boston College , Boston University , the Harvard Medical School , Tufts University School of Medicine , Northeastern University , Massachusetts College of Art and Design , Wentworth Institute of Technology , Berklee College of Music , the Boston Conservatory , and many others attract students to

10208-572: The nation's busiest ports for both domestic and international trade. Boston's harbor activity was significantly curtailed by the Embargo Act of 1807 (adopted during the Napoleonic Wars ) and the War of 1812 . Foreign trade returned after these hostilities, but Boston's merchants had found alternatives for their capital investments in the meantime. Manufacturing became an important component of

10324-453: The next day and night, giving the enemy time to improve their works, to bring up their cannon, and to put themselves in such a state of defence, that I could promise myself little success in attacking them under all the disadvantages I had to encounter. William Howe, 5th Viscount Howe , in a letter to William Legge, 2nd Earl of Dartmouth , about the British army's decision to leave Boston, dated March 21, 1776. Many crucial events of

10440-419: The official name from the "Town of Boston" to the "City of Boston", and on March 19, 1822, the people of Boston accepted the charter incorporating the city. At the time Boston was chartered as a city, the population was about 46,226, while the area of the city was only 4.8 sq mi (12 km ). In the 1820s, Boston's population grew rapidly, and the city's ethnic composition changed dramatically with

10556-461: The position of the jet stream . Prevailing wind patterns that blow offshore minimize the influence of the Atlantic Ocean. However, in winter, areas near the immediate coast often see more rain than snow, as warm air is sometimes drawn off the Atlantic. The city lies at the border between USDA plant hardiness zones 6b (away from the coastline) and 7a (close to the coastline). The hottest month

10672-406: The propagating medium. Eventually this energy is transduced again into other forms, in ways that again may be natural and/or volitionally contrived. The final effect may be purely physical or it may reach far into the biological or volitional domains. The five basic steps are found equally well whether we are talking about an earthquake , a submarine using sonar to locate its foe, or a band playing in

10788-418: The provision of smaller-scaled diapasons , along with more higher-pitched and mutation stops in place of large-scaled unison diapasons, color reeds and flutes. During Harrison's tenure from 1933 until his death in 1956 (while doing tonal finishing on the organ at St. Thomas Church, New York City , which was completed by Arthur Birchall after Harrison's death), the tonal design of Aeolian-Skinner organs changed

10904-435: The relationship between acoustics and cognition , or more commonly known as psychoacoustics , in which what one hears is a combination of perception and biological aspects. The information intercepted by the passage of sound waves through the ear is understood and interpreted through the brain, emphasizing the connection between the mind and acoustics. Psychological changes have been seen as brain waves slow down or speed up as

11020-528: The settlement on the peninsula had been known as "Shawmut" by William Blaxton and "Tremontaine" by the Puritan settlers he had invited. Prior to European colonization , the region surrounding present-day Boston was inhabited by the Massachusett people who had small, seasonal communities. When a group of settlers led by John Winthrop arrived in 1630, the Shawmut Peninsula was nearly empty of

11136-444: The sound wave strikes the microphone's diaphragm, it moves and induces a voltage change. The ultrasonic systems used in medical ultrasonography employ piezoelectric transducers. These are made from special ceramics in which mechanical vibrations and electrical fields are interlinked through a property of the material itself. An acoustician is an expert in the science of sound. There are many types of acoustician, but they usually have

11252-606: The southwest by the town of Dedham and small portions of Needham and Canton , and to the southeast by the town of Milton , and the city of Quincy . The Charles River separates Boston's Allston-Brighton , Fenway-Kenmore and Back Bay neighborhoods from Watertown and Cambridge, and most of Boston from its own Charlestown neighborhood. The Neponset River forms the boundary between Boston's southern neighborhoods and Quincy and Milton . The Mystic River separates Charlestown from Chelsea and Everett, and Chelsea Creek and Boston Harbor separate East Boston from Downtown ,

11368-468: The study of speech intelligibility, speech privacy, music quality, and vibration reduction in the built environment. Commonly studied environments are hospitals, classrooms, dwellings, performance venues, recording and broadcasting studios. Focus considerations include room acoustics, airborne and impact transmission in building structures, airborne and structure-borne noise control, noise control of building systems and electroacoustic systems. Bioacoustics

11484-509: The temperature dipped down to −10 °F (−23 °C); this was the lowest temperature reading in the city since 1957. In addition, several decades may pass between 100 °F (38 °C) readings; the last such reading occurred on July 24, 2022. The city's average window for freezing temperatures is November 9 through April 5. Official temperature records have ranged from −18 °F (−28 °C) on February 9, 1934, up to 104 °F (40 °C) on July 4, 1911. The record cold daily maximum

11600-456: The time varying pressure level and frequency profiles which give a specific acoustic signal its defining character. A transducer is a device for converting one form of energy into another. In an electroacoustic context, this means converting sound energy into electrical energy (or vice versa). Electroacoustic transducers include loudspeakers , microphones , particle velocity sensors, hydrophones and sonar projectors. These devices convert

11716-420: The ultrasonic frequency range. On the other end of the spectrum, the lowest frequencies are known as the infrasonic range. These frequencies can be used to study geological phenomena such as earthquakes. Analytic instruments such as the spectrum analyzer facilitate visualization and measurement of acoustic signals and their properties. The spectrogram produced by such an instrument is a graphical display of

11832-549: The valves and mechanisms which control the wind supply to the pipes.) The Pitman chest allows the air to be held constantly pressurized, directly at the valves located beneath each of the thousands of pipes, which increases responsiveness to the player, and eliminates noise and other problems found with the "Ventil"-style chests, which apply wind only when a stop is drawn. Virtually all major builders of electro-pneumatic action organs, including M. P. Möller , W. W. Kimball (both firms now defunct), Schantz , and Reuter , use some form of

11948-416: The wave interacts with the environment. This interaction can be described as either a diffraction , interference or a reflection or a mix of the three. If several media are present, a refraction can also occur. Transduction processes are also of special importance to acoustics. In fluids such as air and water, sound waves propagate as disturbances in the ambient pressure level. While this disturbance

12064-475: The whole, as in many other fields of knowledge. Robert Bruce Lindsay 's "Wheel of Acoustics" is a well accepted overview of the various fields in acoustics. The word "acoustic" is derived from the Greek word ἀκουστικός ( akoustikos ), meaning "of or for hearing, ready to hear" and that from ἀκουστός ( akoustos ), "heard, audible", which in turn derives from the verb ἀκούω( akouo ), "I hear". The Latin synonym

12180-467: The winter of 2011–12 saw only 9.3 in (23.6 cm) of accumulating snow, but the previous winter, the corresponding figure was 81.0 in (2.06 m). The city's coastal location on the North Atlantic makes the city very prone to nor'easters , which can produce large amounts of snow and rain. Fog is fairly common, particularly in spring and early summer. Due to its coastal location,

12296-736: Was admired for its rarefied literary life and generous artistic patronage . Members of old Boston families—eventually dubbed the Boston Brahmins —came to be regarded as the nation's social and cultural elites. They are often associated with the American upper class , Harvard University , and the Episcopal Church . Boston was a prominent port of the Atlantic slave trade in the New England Colonies , but

12412-418: Was appointed President. Whiteford joined the company in 1948 and had distinguished himself through research in the field of musical acoustics as it relates to church music. Under his direction, Aeolian-Skinner built pipe organs for five of the foremost symphony orchestras in America. His love for vocal music led him to emphasize the role of the organ in accompanying singing. He had a charismatic personality that

12528-430: Was appointed Vice-President and Tonal Director of Aeolian-Skinner in 1933. The company’s tonal philosophy continued to turn from the romantic-style orchestral instruments built under the direction of Skinner to a classically eclectic style. Organists began to look to the past to find direction for the future, and in doing so they found that they were in sympathy with the ideas being developed by Harrison. These ideas included

12644-549: Was commissioned in 2007, with updates released in 2011, 2014, and 2019. This plan includes the Building Energy Reporting and Disclosure Ordinance, which requires the city's larger buildings to disclose their yearly energy and water use statistics and to partake in an energy assessment every five years. A separate initiative, Resilient Boston Harbor, lays out neighborhood-specific recommendations for coastal resilience . In 2013, Mayor Thomas Menino introduced

12760-433: Was limited to small-scale raids and skirmishes. The narrow Boston Neck, which at that time was only about a hundred feet wide, impeded Washington's ability to invade Boston, and a long stalemate ensued. A young officer, Rufus Putnam , came up with a plan to make portable fortifications out of wood that could be erected on the frozen ground under cover of darkness. Putnam supervised this effort, which successfully installed both

12876-481: Was named after Boston, Lincolnshire , England. During the American Revolution , Boston was home to several events that proved central to the revolution and subsequent Revolutionary War , including the Boston Massacre (1770), the Boston Tea Party (1773), Paul Revere's Midnight Ride (1775), the Battle of Bunker Hill (1775), and the Siege of Boston (1775–1776). Following American independence from Great Britain ,

12992-614: Was reversed in 2013 when it was resold to Boston businessman John W. Henry . In 2016, it was announced General Electric would be moving its corporate headquarters from Connecticut to the Seaport District in Boston, joining many other companies in this rapidly developing neighborhood. The city also saw the completion of the Central Artery/Tunnel Project, known as the Big Dig , in 2007 after many delays and cost overruns. On April 15, 2013, two Chechen Islamist brothers detonated

13108-535: Was soon overtaken by Salem, Massachusetts and Newport, Rhode Island . Boston eventually became a center of the American abolitionist movement . The city reacted largely negatively to the Fugitive Slave Act of 1850 , contributing to President Franklin Pierce 's attempt to make an example of Boston after Anthony Burns 's attempt to escape to freedom. In 1822, the citizens of Boston voted to change

13224-487: Was supported by the mayor and a coalition of business leaders and local philanthropists, but was eventually dropped due to public opposition. The USOC then selected Los Angeles to be the American candidate with Los Angeles ultimately securing the right to host the 2028 Summer Olympics . Nevertheless, Boston is one of eleven U.S. cities which will host matches during the 2026 FIFA World Cup , with games taking place at Gillette Stadium . The geographical center of Boston

13340-504: Was the person most directly responsible for the foundation of Boston by Puritan colonists in 1630. This occurred after Blaxton invited one of their leaders, Isaac Johnson , to cross Back Bay from the failing colony of Charlestown and share the peninsula. The Puritans made the crossing in September 1630. Puritan influence on Boston began even before the settlement was founded with the 1629 Cambridge Agreement . This document created

13456-428: Was well suited to the prestige of the Aeolian-Skinner name. In fact, his personal involvement secured major contracts that were directly commissioned without competing bids. His tonal work was not without criticism, including from within the company- e.g. Donald Gillett's unhappiness with Whiteford's "string quartet Greats". For more information see Dr Charles Callahan's book Aeolian-Skinner Remembered . Instruments from

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