Auro-3D is an immersive 3D audio format developed by the Belgium-based company Auro Technologies.
99-570: Galaxy Studios is a music recording , mixing , mastering and post-production facility established in 1980 by two brothers, Wilfried and Guy Van Baelen. It is the origin of Auro 3D sound technology, invented and developed by CEO Wilfried Van Baelen in 2005. Galaxy studios facilitates in Mol , Belgium various music and film post workflows: music recording , music mixing , mastering , sound-editorial services, Foley , dubbing , audio-post mixing, film grading and film mastering. Galaxy Studios has
198-398: A Stroh violin which uses a conical horn connected to a diaphragm that in turn is connected to the violin bridge. The horn was no longer needed once electrical recording was developed. The long-playing 33 1 ⁄ 3 rpm microgroove LP record , was developed at Columbia Records and introduced in 1948. The short-playing but convenient 7-inch (18 cm) 45 rpm microgroove vinyl single
297-472: A film financing department called Mollywood that co-produces A/V media productions. Wilfried and Guy Van Baelen were 18 and 15 years old, respectively, when they started the Galaxy Studios in 1980 in the backyard of their parents home in Mol , Belgium . The official registration of the company under the name Studio Galaxy was 2 years later in 1982. In 1991 they started to make up the plan for
396-626: A hydropowered (water-powered) organ that played interchangeable cylinders. According to Charles B. Fowler, this "... cylinder with raised pins on the surface remained the basic device to produce and reproduce music mechanically until the second half of the nineteenth century." Carvings in the Rosslyn Chapel from the 1560s may represent an early attempt to record the Chladni patterns produced by sound in stone representations, although this theory has not been conclusively proved. In
495-512: A microphone was used to convert the sound into an electrical signal that was amplified and used to actuate the recording stylus. This innovation eliminated the "horn sound" resonances characteristic of the acoustical process, produced clearer and more full-bodied recordings by greatly extending the useful range of audio frequencies, and allowed previously unrecordable distant and feeble sounds to be captured. During this time, several radio-related developments in electronics converged to revolutionize
594-685: A sound track . The projector used a steady light and a photodetector to convert these variations back into an electrical signal, which was amplified and sent to loudspeakers behind the screen. Optical sound became the standard motion picture audio system throughout the world and remains so for theatrical release prints despite attempts in the 1950s to substitute magnetic soundtracks. Currently, all release prints on 35 mm movie film include an analog optical soundtrack, usually stereo with Dolby SR noise reduction. In addition, an optically recorded digital soundtrack in Dolby Digital or Sony SDDS form
693-469: A Brahms Serenade, and the last movement of Bruckner's 8th Symphony with Von Karajan. Other early German stereophonic tapes are believed to have been destroyed in bombings. Not until Ampex introduced the first commercial two-track tape recorders in the late 1940s did stereo tape recording become commercially feasible. Despite the availability of multitrack tape, stereo did not become the standard system for commercial music recording for some years, and remained
792-407: A coating of soot as the paper was passed under it. An 1860 phonautogram of " Au Clair de la Lune ", a French folk song, was played back as sound for the first time in 2008 by scanning it and using software to convert the undulating line, which graphically encoded the sound, into a corresponding digital audio file. Thomas Edison's work on two other innovations, the telegraph and the telephone, led to
891-485: A condenser type developed there in 1916 and greatly improved in 1922, and the best amplifiers and test equipment. They had already patented an electromechanical recorder in 1918, and in the early 1920s, they decided to intensively apply their hardware and expertise to developing two state-of-the-art systems for electronically recording and reproducing sound: one that employed conventional discs and another that recorded optically on motion picture film. Their engineers pioneered
990-402: A few crude telephone-based recording devices with no means of amplification, such as the telegraphone , it remained so until the 1920s. Between the invention of the phonograph in 1877 and the first commercial digital recordings in the early 1970s, arguably the most important milestone in the history of sound recording was the introduction of what was then called electrical recording , in which
1089-509: A high level of complexity and sophistication. The combined impact with innovations such as the endless loop broadcast cartridge led to significant changes in the pacing and production style of radio program content and advertising. In 1881, it was noted during experiments in transmitting sound from the Paris Opera that it was possible to follow the movement of singers on the stage if earpieces connected to different microphones were held to
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#17327901280341188-585: A major consumer audio format and advances in electronic and mechanical miniaturization led to the development of the Sony Walkman , a pocket-sized cassette player introduced in 1979. The Walkman was the first personal music player and it gave a major boost to sales of prerecorded cassettes. A key advance in audio fidelity came with the Dolby A noise reduction system, invented by Ray Dolby and introduced into professional recording studios in 1966. It suppressed
1287-408: A mechanical representation of the sound waves on a medium such as a phonograph record (in which a stylus cuts grooves on a record). In magnetic tape recording, the sound waves vibrate the microphone diaphragm and are converted into a varying electric current , which is then converted to a varying magnetic field by an electromagnet , which makes a representation of the sound as magnetized areas on
1386-554: A much larger proportion of people to hear famous orchestras, operas, singers and bands, because even if a person could not afford to hear the live concert, they may be able to hear the recording. The availability of sound recording thus helped to spread musical styles to new regions, countries and continents. The cultural influence went in a number of directions. Sound recordings enabled Western music lovers to hear actual recordings of Asian, Middle Eastern and African groups and performers, increasing awareness of non-Western musical styles. At
1485-575: A new facility. They partnered with acoustic engineer Eric Desart of the Gerber Group and Professor Gerrit Vermeir at the University of Leuven and accepted the challenge of building the Galaxy Studios. From 1992 to 1995 the van Baelen brothers oversaw the first phase of the construction on the new facility. A total of 185,000 man hours was spent in the construction of three studios, a 350m2 live recording area , various adjacent recording areas ,
1584-407: A plastic tape with a magnetic coating on it. Analog sound reproduction is the reverse process, with a larger loudspeaker diaphragm causing changes to atmospheric pressure to form acoustic sound waves. Digital recording and reproduction converts the analog sound signal picked up by the microphone to a digital form by the process of sampling . This lets the audio data be stored and transmitted by
1683-401: A restaurant and hotel accommodations. By using standalone concrete bunkers, mounted on helical springs , they achieved a sound isolation of 100.7 dB between each isolated bunker. In 1996 phase 2 of the construction of the Galaxy Studios village was begun. This period commissioned an SSL 9080J, entering the field of 5.1 sound recording and mixing. An extra pre-production studio with
1782-402: A result, each performance of a song or piece would be slightly different. With the development of analog sound recording, though, a performance could be permanently fixed, in all of its elements: pitch, rhythm, timbre, ornaments and expression. This meant that many more elements of a performance would be captured and disseminated to other listeners. The development of sound recording also enabled
1881-412: A revival of vinyl in the music industry, as well as analog electronics, and analog type plug-ins for recording and mixing software. Auro 3D It is designed along three layers of sound ( surround , height and overhead ceiling), building on the single horizontal layer used in the 5.1 or 7.1 sound format. Auro-3D creates a spatial sound field by adding a height layer around the audience on top of
1980-703: A special piano, which punched holes in the master as a live performer played the song. Thus, the roll represented a recording of the actual performance of an individual, not just the more common method of punching the master roll through transcription of the sheet music. This technology to record a live performance onto a piano roll was not developed until 1904. Piano rolls were in continuous mass production from 1896 to 2008. A 1908 U.S. Supreme Court copyright case noted that, in 1902 alone, there were between 70,000 and 75,000 player pianos manufactured, and between 1,000,000 and 1,500,000 piano rolls produced. The first device that could record actual sounds as they passed through
2079-510: A specialist market during the 1950s. EMI (UK) was the first company to release commercial stereophonic tapes. They issued their first Stereosonic tape in 1954. Others quickly followed, under the His Master's Voice (HMV) and Columbia labels. 161 Stereosonic tapes were released, mostly classical music or lyric recordings. RCA imported these tapes into the USA. Although some HMV tapes released in
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#17327901280342178-464: A stereo soundtrack was Walt Disney's Fantasia , released in 1940. The 1941 release of Fantasia used the Fantasound sound system. This system used a separate film for the sound, synchronized with the film carrying the picture. The sound film had four double-width optical soundtracks, three for left, center, and right audio—and a fourth as a "control" track with three recorded tones that controlled
2277-469: A variety of materials including mild steel, thorn, and even sapphire. Discs had a distinctly limited playing life that varied depending on how they were manufactured. Earlier, purely acoustic methods of recording had limited sensitivity and frequency range. Mid-frequency range notes could be recorded, but very low and very high frequencies could not. Instruments such as the violin were difficult to transfer to disc. One technique to deal with this involved using
2376-429: A variety of techniques from remixing to pseudostereo . Magnetic tape transformed the recording industry. By the early 1950s, most commercial recordings were mastered on tape instead of recorded directly to disc. Tape facilitated a degree of manipulation in the recording process that was impractical with mixes and multiple generations of directly recorded discs. An early example is Les Paul 's 1951 recording of How High
2475-476: A wide frequency range and high audio quality are not. The development of analog sound recording in the nineteenth century and its widespread use throughout the twentieth century had a huge impact on the development of music. Before analog sound recording was invented, most music was as a live performance. Throughout the medieval , Renaissance , Baroque , Classical , and through much of the Romantic music era ,
2574-441: A wider variety of media. Digital recording stores audio as a series of binary numbers (zeros and ones) representing samples of the amplitude of the audio signal at equal time intervals, at a sample rate high enough to convey all sounds capable of being heard . A digital audio signal must be reconverted to analog form during playback before it is amplified and connected to a loudspeaker to produce sound. Long before sound
2673-550: A worldwide standard for higher-quality recording on vinyl records. The Ernest Ansermet recording of Igor Stravinsky 's Petrushka was key in the development of full frequency range records and alerting the listening public to high fidelity in 1946. Until the mid-1960s, record companies mixed and released most popular music in monophonic sound. From mid-1960s until the early 1970s, major recordings were commonly released in both mono and stereo. Recordings originally released only in mono have been rerendered and released in stereo using
2772-417: Is likely to be present. An optically recorded timecode is also commonly included to synchronize CDROMs that contain a DTS soundtrack. This period also saw several other historic developments including the introduction of the first practical magnetic sound recording system, the magnetic wire recorder , which was based on the work of Danish inventor Valdemar Poulsen . Magnetic wire recorders were effective, but
2871-442: Is the electrical , mechanical , electronic, or digital inscription and re-creation of sound waves, such as spoken voice, singing, instrumental music , or sound effects . The two main classes of sound recording technology are analog recording and digital recording . Acoustic analog recording is achieved by a microphone diaphragm that senses changes in atmospheric pressure caused by acoustic sound waves and records them as
2970-536: The compact disc (CD) in 1982 brought significant improvements in the quality and durability of recordings. The CD initiated another massive wave of change in the consumer music industry, with vinyl records effectively relegated to a small niche market by the mid-1990s. The record industry fiercely resisted the introduction of digital systems, fearing wholesale piracy on a medium able to produce perfect copies of original released recordings. The most recent and revolutionary developments have been in digital recording, with
3069-452: The graphic equalizer , which could be connected together to create a complete home sound system. These developments were rapidly taken up by major Japanese electronics companies, which soon flooded the world market with relatively affordable, high-quality transistorized audio components. By the 1980s, corporations like Sony had become world leaders in the music recording and playback industry. The advent of digital sound recording and later
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3168-464: The 14th century, a mechanical bell-ringer controlled by a rotating cylinder was introduced in Flanders . Similar designs appeared in barrel organs (15th century), musical clocks (1598), barrel pianos (1805), and music boxes ( c. 1800 ). A music box is an automatic musical instrument that produces sounds by the use of a set of pins placed on a revolving cylinder or disc so as to pluck
3267-406: The 1920s, Phonofilm and other early motion picture sound systems employed optical recording technology, in which the audio signal was graphically recorded on photographic film. The amplitude variations comprising the signal were used to modulate a light source which was imaged onto the moving film through a narrow slit, allowing the signal to be photographed as variations in the density or width of
3366-549: The 1980s, but in the 1960s the pre-recorded 8-track tape was launched as a consumer audio format by the Lear Jet aircraft company. Aimed particularly at the automotive market, they were the first practical, affordable car hi-fi systems, and could produce sound quality superior to that of the compact cassette. The smaller size and greater durability – augmented by the ability to create home-recorded music mixtapes since 8-track recorders were rare – saw
3465-514: The Amek Angela Console and a fifth small studio for vocal recording and a private lounge and producers suite were added in phase 2. In 1999 the final phase of construction was realised with a mastering studio and a film dubbing stage for audio visual productions. In total the Galaxy Studios took 7 years to build and 318,000 man hours were spent to achieve the full construction of the facility. Around 2003, Sony Music installed
3564-674: The Auro-Codec and the Auro-Matic upmixing algorithm to convert legacy content into the Auro-3D format. The Creative Tool Suite is a set of plugins that can be used to create native immersive 3D audio content. Auro-3D is fully compatible with all existing production processes and theatre systems, and the format also offers a host of compatibility features such as Single Inventory Distribution (multiple formats are combined in one PCM carrier) and full DCI compliancy. In 2019, Auro published
3663-598: The Auro-Cx format, which can be used for streaming applications. Auro-3D comes in a variety of listening formats that are compliant with market standards: Home Theater (Small Rooms) : Auro 9.1, Auro 10.1 (with added Top Ceiling channel, the so-called "Voice Of God") Cinema (Large Rooms) : Auro 11.1 (with added Front Height Center channel), Auro 13.1 (with added Left Rear Surround & Right Rear Surround channel), AuroMax 22.1, AuroMax 26.1 (allowing placement of objects) 3D Over Headphones : A format designed to capture
3762-524: The Galaxy Studios holding, Galaxy Studios Group. With the tax incentives introduced by the Belgium government, the company can invest in audiovisual productions. The name Mollywood refers to the in Los Angeles based Hollywood district which is famous for its audio visual productions, and to the city of Mol in which Mollywood is established. Mollywood (co) productions include: Zilvermeer Productions
3861-606: The International Union of Cinemas. In September 2013 an agreement was signed with Datasat Digital Entertainment to integrate the format in their range of high-end consumer audio processors. The Datasat LS10 audio processor featuring Auro-3D was presented to the public at ISE 2014. In 2015, Barco and Auro Technologies debuted the AuroMax format, with 23 or 26 channels available. The increased number of channels allows for sounds to be encoded as "objects" and moved around
3960-483: The Moon , on which Paul played eight overdubbed guitar tracks. In the 1960s Brian Wilson of The Beach Boys , Frank Zappa , and The Beatles (with producer George Martin ) were among the first popular artists to explore the possibilities of multitrack recording techniques and effects on their landmark albums Pet Sounds , Freak Out! , and Sgt. Pepper's Lonely Hearts Club Band . The next important innovation
4059-631: The Spatial Audio Convention in Tokyo, the cinematic formats Auro 11.1 and Auro 13.1 as well as the Auro-Codec and Creative Tool Suite were launched. In 2011 a partnership was struck with the Belgian display hardware manufacturer Barco to incorporate Auro-3D in their cinema hardware setup, and in the same year the first installations of Auro 11.1 were deployed. In October 2011, it was announced that Lucasfilm Ltd. 's Red Tails would be
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4158-597: The USA cost up to $ 15, two-track stereophonic tapes were more successful in America during the second half of the 1950s. The history of stereo recording changed after the late 1957 introduction of the Westrex stereo phonograph disc , which used the groove format developed earlier by Blumlein. Decca Records in England came out with FFRR (Full Frequency Range Recording) in the 1940s, which became internationally accepted as
4257-500: The additional benefit of being marginally louder than cylinders. Sales of the gramophone record overtook the cylinder ca. 1910, and by the end of World War I the disc had become the dominant commercial recording format. Edison, who was the main producer of cylinders, created the Edison Disc Record in an attempt to regain his market. The double-sided (nominally 78 rpm) shellac disc was the standard consumer music format from
4356-407: The air (but could not play them back—the purpose was only visual study) was the phonautograph , patented in 1857 by Parisian inventor Édouard-Léon Scott de Martinville . The earliest known recordings of the human voice are phonautograph recordings, called phonautograms , made in 1857. They consist of sheets of paper with sound-wave-modulated white lines created by a vibrating stylus that cut through
4455-494: The amount of data that can be stored on a single medium, such as Super Audio CD , DVD-A , Blu-ray Disc , and HD DVD became available, longer programs of higher quality fit onto a single disc. Sound files are readily downloaded from the Internet and other sources, and copied onto computers and digital audio players. Digital audio technology is now used in all areas of audio, from casual use of music files of moderate quality to
4554-417: The background of hiss, which was the only easily audible downside of mastering on tape instead of recording directly to disc. A competing system, dbx , invented by David Blackmer, also found success in professional audio. A simpler variant of Dolby's noise reduction system, known as Dolby B, greatly improved the sound of cassette tape recordings by reducing the especially high level of hiss that resulted from
4653-500: The basic layout used by Auro 11.1 and Auro 13.1 by dividing the side, rear and ceiling channels into "zones", to allow for placement of sound at discrete points along the theatre wall or ceiling as well as within the theatre itself. The principle employed is similar to other object based formats such as Dolby Atmos or DTS:X . The Auro-3D technology consists of the Auro-3D Engine and a Creative Tool Suite. The engine comprises
4752-555: The basis of all electronic sound systems until the commercial introduction of the first transistor -based audio devices in the mid-1950s. During World War I, engineers in the United States and Great Britain worked on ways to record and reproduce, among other things, the sound of a German U-boat for training purposes. Acoustical recording methods of the time could not reproduce the sounds accurately. The earliest results were not promising. The first electrical recording issued to
4851-454: The cassette become the dominant consumer format for portable audio devices in the 1970s and 1980s. There had been experiments with multi-channel sound for many years – usually for special musical or cultural events – but the first commercial application of the concept came in the early 1970s with the introduction of Quadraphonic sound. This spin-off development from multitrack recording used four tracks (instead of
4950-407: The cassette's miniaturized tape format. The compact cassette format also benefited from improvements to the tape itself as coatings with wider frequency responses and lower inherent noise were developed, often based on cobalt and chrome oxides as the magnetic material instead of the more usual iron oxide. The multitrack audio cartridge had been in wide use in the radio industry, from the late 1950s to
5049-447: The commercial recording, distribution, and sale of sound recordings became a growing new international industry, with the most popular titles selling millions of units by the early 1900s. A process for mass-producing duplicate wax cylinders by molding instead of engraving them was put into effect in 1901. The development of mass-production techniques enabled cylinder recordings to become a major new consumer item in industrial countries and
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#17327901280345148-505: The controversy came to focus on concern for the perception of moving image and sound. There are individual and cultural preferences for either method. While approaches and opinions vary, some emphasize sound as paramount, others focus on technology preferences as the deciding factor. Analog fans might embrace limitations as strengths of the medium inherent in the compositional, editing, mixing, and listening phases. Digital advocates boast flexibility in similar processes. This debate fosters
5247-456: The correct equipment, of the released music. It eventually faded out in the late 1970s, although this early venture paved the way for the eventual introduction of domestic surround sound systems in home theatre use, which gained popularity following the introduction of the DVD. The replacement of the relatively fragile vacuum tube by the smaller, rugged and efficient transistor also accelerated
5346-538: The cumbersome disc-to-disc editing procedures previously in some limited use, together with tape's consistently high audio quality finally convinced radio networks to routinely prerecord their entertainment programming, most of which had formerly been broadcast live. Also, for the first time, broadcasters, regulators and other interested parties were able to undertake comprehensive audio logging of each day's radio broadcasts. Innovations like multitracking and tape echo allowed radio programs and advertisements to be produced to
5445-407: The cylinder was the main consumer format from the late 1880s until around 1910. The next major technical development was the invention of the gramophone record , generally credited to Emile Berliner and patented in 1887, though others had demonstrated similar disk apparatus earlier, most notably Alexander Graham Bell in 1881. Discs were easier to manufacture, transport and store, and they had
5544-572: The development of the phonograph. Edison was working on a machine in 1877 that would transcribe telegraphic signals onto paper tape, which could then be transferred over the telegraph again and again. The phonograph was both in a cylinder and a disc form. On April 30, 1877, French poet, humorous writer and inventor Charles Cros submitted a sealed envelope containing a letter to the Academy of Sciences in Paris fully explaining his proposed method, called
5643-490: The development of various uncompressed and compressed digital audio file formats , processors capable and fast enough to convert the digital data to sound in real time , and inexpensive mass storage . This generated new types of portable digital audio players . The minidisc player, using ATRAC compression on small, re-writeable discs was introduced in the 1990s, but became obsolescent as solid-state non-volatile flash memory dropped in price. As technologies that increase
5742-444: The early 1910s to the late 1950s. In various permutations, the audio disc format became the primary medium for consumer sound recordings until the end of the 20th century. Although there was no universally accepted speed, and various companies offered discs that played at several different speeds, the major recording companies eventually settled on a de facto industry standard of nominally 78 revolutions per minute. The specified speed
5841-462: The first DSD ( Direct Stream Digital ) console for SACD production into Galaxy Studios. In 2005 Wilfried van Baelen introduced the Auro-3D sound technology system to the industry. The Auro-3D format creates 3D sound by using a three-layered channel system based on the existing 5.1 Surround sound format for film. The technology adds a height and top layer to the 5.1 system. Applications also include
5940-611: The first major motion picture released in the Auro 11.1 format. The first Indian film to use Auto 3D was Vishwaroopam (2013). On 1 November 2012, it was announced that DreamWorks Animation SKG will mix 15 of their upcoming features in the Auro 11.1 format. The first animated film in Auro 11.1 was Rise of the Guardians which was released in November 2012. Subsequently, also The Croods and Turbo were mixed and released in
6039-500: The format, as well as all subsequent DreamWorks Animation films. Barco, Auro Technologies and audio technology developer DTS made the announcement that they would join forces to support an open standard for immersive object-based cinema sound at CinemaCon 2013. This statement was issued in response to the cinema exhibitor requirements for immersive sound technologies from the National Association of Theatre Owners and
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#17327901280346138-402: The high recording speeds required, they used enormous reels about one meter in diameter, and the thin tape frequently broke, sending jagged lengths of razor steel flying around the studio. Magnetic tape recording uses an amplified electrical audio signal to generate analogous variations of the magnetic field produced by a tape head , which impresses corresponding variations of magnetization on
6237-540: The main way that songs and instrumental pieces were recorded was through music notation . While notation indicates the pitches of the melody and their rhythm many aspects of the performance are undocumented. Indeed, in the Medieval era, Gregorian chant did not indicate the rhythm of the chant. In the Baroque era, instrumental pieces often lack a tempo indication and usually none of the ornaments were written down. As
6336-651: The most demanding professional applications. New applications such as internet radio and podcasting have appeared. Technological developments in recording, editing, and consuming have transformed the record , movie and television industries in recent decades. Audio editing became practicable with the invention of magnetic tape recording , but technologies like MIDI , sound synthesis and digital audio workstations allow greater control and efficiency for composers and artists. Digital audio techniques and mass storage have reduced recording costs such that high-quality recordings can be produced in small studios. Today,
6435-402: The moving tape. In playback mode, the signal path is reversed, the tape head acting as a miniature electric generator as the varyingly magnetized tape passes over it. The original solid steel ribbon was replaced by a much more practical coated paper tape, but acetate soon replaced paper as the standard tape base. Acetate has fairly low tensile strength and if very thin it will snap easily, so it
6534-484: The music and gaming industry. In August 2013, Galaxy Studios opened its first Auro-3D purposed dubbing stage: the AuroTorium. Currently, Galaxy is further expanding the facilities with two additional dub stages, a foley stage, editorial suites , a colour grading suite and new hotel accommodations. Mollywood is a film funding and tax sheltering company that was established in Mol, Belgium in 2009 as part of
6633-599: The next few years, the lesser record companies licensed or developed other electrical recording systems. By 1929 only the budget label Harmony was still issuing new recordings made by the old acoustical process. Comparison of some surviving Western Electric test recordings with early commercial releases indicates that the record companies artificially reduced the frequency range of recordings so they would not overwhelm non-electronic playback equipment, which reproduced very low frequencies as an unpleasant rattle and rapidly wore out discs with strongly recorded high frequencies. In
6732-488: The next two years, Blumlein developed stereo microphones and a stereo disc-cutting head, and recorded a number of short films with stereo soundtracks. In the 1930s, experiments with magnetic tape enabled the development of the first practical commercial sound systems that could record and reproduce high-fidelity stereophonic sound . The experiments with stereo during the 1930s and 1940s were hampered by problems with synchronization. A major breakthrough in practical stereo sound
6831-405: The only issued electrical recording. Several record companies and independent inventors, notably Orlando Marsh , experimented with equipment and techniques for electrical recording in the early 1920s. Marsh's electrically recorded Autograph Records were already being sold to the public in 1924, a year before the first such offerings from the major record companies, but their overall sound quality
6930-416: The paleophone. Though no trace of a working paleophone was ever found, Cros is remembered by some historians as an early inventor of a sound recording and reproduction machine. The first practical sound recording and reproduction device was the mechanical phonograph cylinder , invented by Thomas Edison in 1877 and patented in 1878. The invention soon spread across the globe and over the next two decades
7029-665: The playback volume of the three audio channels. Because of the complex equipment this system required, Disney exhibited the movie as a roadshow, and only in the United States. Regular releases of the movie used standard mono optical 35 mm stock until 1956, when Disney released the film with a stereo soundtrack that used the Cinemascope four-track magnetic sound system. German audio engineers working on magnetic tape developed stereo recording by 1941. Of 250 stereophonic recordings made during WW2, only three survive: Beethoven's 5th Piano Concerto with Walter Gieseking and Arthur Rother,
7128-808: The process of making a recording is separated into tracking, mixing and mastering . Multitrack recording makes it possible to capture signals from several microphones, or from different takes to tape, disc or mass storage allowing previously unavailable flexibility in the mixing and mastering stages. There are many different digital audio recording and processing programs running under several computer operating systems for all purposes, ranging from casual users and serious amateurs working on small projects to professional sound engineers who are recording albums, film scores and doing sound design for video games . Digital dictation software for recording and transcribing speech has different requirements; intelligibility and flexible playback facilities are priorities, while
7227-549: The public, with little fanfare, was of November 11, 1920, funeral service for The Unknown Warrior in Westminster Abbey , London. The recording engineers used microphones of the type used in contemporary telephones. Four were discreetly set up in the abbey and wired to recording equipment in a vehicle outside. Although electronic amplification was used, the audio was weak and unclear, as only possible in those circumstances. For several years, this little-noted disc remained
7326-590: The recording industry. Tape made possible the first sound recordings totally created by electronic means, opening the way for the bold sonic experiments of the Musique Concrète school and avant-garde composers like Karlheinz Stockhausen , which in turn led to the innovative pop music recordings of artists such as the Beatles and the Beach Boys . The ease and accuracy of tape editing, as compared to
7425-540: The recording process. These included improved microphones and auxiliary devices such as electronic filters, all dependent on electronic amplification to be of practical use in recording. In 1906, Lee De Forest invented the Audion triode vacuum tube, an electronic valve that could amplify weak electrical signals. By 1915, it was in use in long-distance telephone circuits that made conversations between New York and San Francisco practical. Refined versions of this tube were
7524-646: The rights to the Blattnerphone, and newly developed Marconi-Stille recorders were installed in the BBC's Maida Vale Studios in March 1935. The tape used in Blattnerphones and Marconi-Stille recorders was the same material used to make razor blades, and not surprisingly the fearsome Marconi-Stille recorders were considered so dangerous that technicians had to operate them from another room for safety. Because of
7623-466: The sale of consumer high-fidelity sound systems from the 1960s onward. In the 1950s, most record players were monophonic and had relatively low sound quality. Few consumers could afford high-quality stereophonic sound systems. In the 1960s, American manufacturers introduced a new generation of modular hi-fi components — separate turntables, pre-amplifiers, amplifiers, both combined as integrated amplifiers, tape recorders, and other ancillary equipment like
7722-505: The same tape many times, sounds could be duplicated from tape to tape with only minor loss of quality, and recordings could now be very precisely edited by physically cutting the tape and rejoining it. Within a few years of the introduction of the first commercial tape recorder—the Ampex 200 model, launched in 1948—American musician-inventor Les Paul had invented the first multitrack tape recorder , ushering in another technical revolution in
7821-514: The same time, sound recordings enabled music lovers outside the West to hear the most famous North American and European groups and singers. As digital recording developed, so did a controversy commonly known as the analog versus digital controversy. Audio professionals, audiophiles, consumers, musicians alike contributed to the debate based on their interaction with the media and the preferences for analog or digital processes. Scholarly discourse on
7920-566: The sound quality was poor, so between the wars, they were primarily used for voice recording and marketed as business dictating machines. In 1924, a German engineer, Kurt Stille, improved the Telegraphone with an electronic amplifier. The following year, Ludwig Blattner began work that eventually produced the Blattnerphone, which used steel tape instead of wire. The BBC started using Blattnerphones in 1930 to record radio programs. In 1933, radio pioneer Guglielmo Marconi 's company purchased
8019-553: The sounds that exist in the lower Surround layer. In 2011 a partnership was struck with the Belgian display hardware manufacturer Barco to incorporate Auro-3D in their cinema hardware setup, and in the same year the first worldwide installations of the cinema format Auro 11.1 were deployed. Auro Technologies also made alliances with partners in other markets, such as home AV (with Datasat) and gaming (with AudioKinetic ). Music recording Sound recording and reproduction
8118-597: The spatial effect of Auro-3D in a portable environment for personal listening The Auro-3D concept and formats were developed in 2005 by Wilfried Van Baelen, CEO and founder of Galaxy Studios and Auro Technologies. The format was officially introduced to the public at the AES Convention 2006 in Paris (20–23 May) and San Francisco (6–8 October) during the workshop "Surround with Height Channels". The first speaker layouts presented here were Auro 9.1 and Auro 10.1 (which added an overhead top speaker). In October 2010, at
8217-479: The system and both made their earliest published electrical recordings in February 1925, but neither actually released them until several months later. To avoid making their existing catalogs instantly obsolete, the two long-time archrivals agreed privately not to publicize the new process until November 1925, by which time enough electrically recorded repertory would be available to meet the anticipated demand. During
8316-445: The technology. Auro-3D is designed along three layers of sound (Surround, height and overhead ceiling) rather than the single horizontal layer used in the traditional 5.1 sound format. It creates a spatial sound experience by adding a height layer around the audience on top of the traditional 2D Surround sound system. This extra layer reveals both localized sounds and height reflections which are crucial for our brains to better interpret
8415-419: The traditional 2D surround sound system. This additional layer reveals both localized sounds and height reflections complementing the sounds that exist in the lower surround layer. The height information that is captured during recording is mixed into a standard 5.1 surround PCM carrier, and during playback the Auro-3D decoder extracts the originally recorded height channels from this stream. AuroMax expands on
8514-411: The tuned teeth (or lamellae ) of a steel comb. The fairground organ , developed in 1892, used a system of accordion-folded punched cardboard books. The player piano , first demonstrated in 1876, used a punched paper scroll that could store a long piece of music. The most sophisticated of the piano rolls were "hand-played," meaning that they were duplicates from a master roll which had been created on
8613-495: The two ears. This discovery was commercialized in 1890 with the Théâtrophone system, which operated for over forty years until 1932. In 1931, Alan Blumlein , a British electronics engineer working for EMI , designed a way to make the sound of an actor in a film follow his movement across the screen. In December 1931, he submitted a patent application including the idea, and in 1933 this became UK patent number 394,325 . Over
8712-615: The two used in stereo) and four speakers to create a 360-degree audio field around the listener. Following the release of the first consumer 4-channel hi-fi systems, a number of popular albums were released in one of the competing four-channel formats; among the best known are Mike Oldfield 's Tubular Bells and Pink Floyd 's The Dark Side of the Moon . Quadraphonic sound was not a commercial success, partly because of competing and somewhat incompatible four-channel sound systems (e.g., CBS , JVC , Dynaco and others all had systems) and generally poor quality, even when played as intended on
8811-566: The use of mechanical analogs of electrical circuits and developed a superior "rubber line" recorder for cutting the groove into the wax master in the disc recording system. By 1924, such dramatic progress had been made that Western Electric arranged a demonstration for the two leading record companies, the Victor Talking Machine Company and the Columbia Phonograph Company . Both soon licensed
8910-549: Was 78.26 rpm in America and 77.92 rpm throughout the rest of the world. The difference in speeds was due to the difference in the cycle frequencies of the AC electricity that powered the stroboscopes used to calibrate recording lathes and turntables. The nominal speed of the disc format gave rise to its common nickname, the "seventy-eight" (though not until other speeds had become available). Discs were made of shellac or similar brittle plastic-like materials, played with needles made from
9009-414: Was acceptable. The compact 45 format required very little material. Vinyl offered improved performance, both in stamping and in playback. Vinyl records were, over-optimistically, advertised as "unbreakable". They were not, but they were much less fragile than shellac, which had itself once been touted as "unbreakable" compared to wax cylinders. Sound recording began as a purely mechanical process. Except for
9108-631: Was established in 2014 as the Galaxy Studios Group production house. Zilvermeer develops, produces and co-produces film and TV projects for the Benelux and international market. Zilvermeer (co) productions include: Galaxy Studios is the home of the immersive 3D audio technology Auro 3D . The concept and formats were developed in 2005 by Wilfried Van Baelen, and in 2010 Auro Technologies was formed by The Van Baelen brothers together with their partner Alfred Schefenacker to develop and promote
9207-450: Was first recorded, music was recorded—first by written music notation , then also by mechanical devices (e.g., wind-up music boxes , in which a mechanism turns a spindle, which plucks metal tines, thus reproducing a melody ). Automatic music reproduction traces back as far as the 9th century, when the Banū Mūsā brothers invented the earliest known mechanical musical instrument, in this case,
9306-507: Was further improved just after World War II by American audio engineer John T. Mullin with backing from Bing Crosby Enterprises. Mullin's pioneering recorders were modifications of captured German recorders. In the late 1940s, the Ampex company produced the first tape recorders commercially available in the US. Magnetic tape brought about sweeping changes in both radio and the recording industry. Sound could be recorded, erased and re-recorded on
9405-530: Was in turn eventually superseded by polyester. This technology, the basis for almost all commercial recording from the 1950s to the 1980s, was developed in the 1930s by German audio engineers who also rediscovered the principle of AC biasing (first used in the 1920s for wire recorders ), which dramatically improved the frequency response of tape recordings. The K1 Magnetophon was the first practical tape recorder, developed by AEG in Germany in 1935. The technology
9504-411: Was introduced by RCA Victor in 1949. In the US and most developed countries, the two new vinyl formats completely replaced 78 rpm shellac discs by the end of the 1950s, but in some corners of the world, the 78 lingered on far into the 1960s. Vinyl was much more expensive than shellac, one of the several factors that made its use for 78 rpm records very unusual, but with a long-playing disc the added cost
9603-448: Was made by Bell Laboratories , who in 1937 demonstrated a practical system of two-channel stereo, using dual optical sound tracks on film. Major movie studios quickly developed three-track and four-track sound systems, and the first stereo sound recording for a commercial film was made by Judy Garland for the MGM movie Listen, Darling in 1938. The first commercially released movie with
9702-479: Was small cartridge-based tape systems, of which the compact cassette , commercialized by the Philips electronics company in 1964, is the best known. Initially a low-fidelity format for spoken-word voice recording and inadequate for music reproduction, after a series of improvements it entirely replaced the competing consumer tape formats: the larger 8-track tape (used primarily in cars). The compact cassette became
9801-410: Was too low to demonstrate any obvious advantage over traditional acoustical methods. Marsh's microphone technique was idiosyncratic and his work had little if any impact on the systems being developed by others. Telephone industry giant Western Electric had research laboratories with material and human resources that no record company or independent inventor could match. They had the best microphone,
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