Electronic voice alert ( EVA ) was an option available on many Chrysler K-car -based vehicles in the mid-1980s.
13-652: Chrysler and Dodge used technology of the Texas Instruments LPC Speech Chips , that were also used in the Speak & Spell toy. The EVA would automatically lower the radio volume and deliver eleven different spoken warning messages to drivers using a speech synthesizer in 24 certain models. A similar system was used in 1984 to 1986 Nissan 300ZX , Nissan 200SX , and the Nissan Maxima GL and GLE models. The messages are played from
26-425: A digital instrument cluster and considered the height of technology at the time, many drivers grew weary of the system constantly admonishing them to fasten their seatbelts and turned it off via removing a fuse, which sometimes deactivates the fuel gauge . Later models had the option to be turned off via a switch in the glovebox. Texas Instruments LPC Speech Chips The Texas Instruments LPC Speech Chips are
39-612: A miniature phonograph record , similar as used in speaking dolls . The EVA was available on the Chrysler LeBaron (and the optional Mark Cross Edition), Chrysler Town and Country Wagon , Chrysler Fifth Avenue , Chrysler New Yorker , Chrysler Laser , Dodge Daytona , and Dodge 600 between 1983 and 1988. Models sold in Canada accommodated both English and French. Models sold in Mexico spoke Spanish. Generally paired with
52-629: A series of speech synthesizer digital signal processor integrated circuits created by Texas Instruments beginning in 1978. They continued to be developed and marketed for many years, though the speech department moved around several times within TI until finally dissolving in late 2001. The rights to the speech-specific subset of the MSP line, the last remaining line of TI speech products as of 2001, were sold to Sensory, Inc. in October 2001. Speech data
65-528: A special TI-specific format. Chips in the TI LPC speech series were labeled as TMCxxxx or CDxxxx when used by TI's consumer product division, or labeled as TMS5xxx (later TSP5xxx) when sold to 3rd parties. The companion devices to all versions of the speech chip were the custom 4-bit-interfaced 128Kbit (16KiB) TMS6100 NL (AKA TMC0350) and 32Kbit (4KiB) TMS6125 NL (a.k.a. TMC0355 a.k.a. TMS7125) read-only memories which were mask programmed with words required for
78-709: A specific product. ALL versions of the LPC chips until the TSP50Cxx series support them. All versions of the TMS6100 appear to only have 128Kbit/16KiB of content, regardless of rumors to the contrary. TMS6100 The Texas Instruments TMS6100 Voice Synthesis Memory (VSM) is a 1 or 4-bit serial mask factory-programmed read-only memory IC . It is a companion chip to the TMS5100 , CD2802 , TMS5110 , (rarely) TMS5200 , and (rarely) TMS5220 speech synthesizer ICs, and
91-452: Is mask-programmable whether the bits are read out 1-bit serially or 4 at a time. The TMS6125 is a smaller, 32 Kib (4 KiB) version of effectively the same chip, with some minor changes to the 'address load' command format to reflect its smaller size. Texas Instruments calls both of these serial roms (TMS6100 and TMS6125) "VSM"s (Voice Synthesis Memory) on their datasheets and literature. Both VSMs use 'local addressing', meaning
104-469: Is stored through pitch-excited linear predictive coding (PE-LPC), where words are created by a lattice filter , selectably fed by either an excitation ROM (containing a glottal pulse waveform) or an LFSR ( linear-feedback shift register ) noise generator. Linear predictive coding achieves a vast reduction in data volume needed to recreate intelligible speech data. The TMC0280/TMS5100 was the first self-contained LPC speech synthesizer IC ever made. It
117-453: The 'Vowel Power' Speak and Spell expansion cartridge). It should also be noted that CD22xx, CD25xx and CD28xx numbers are used for chips that are NOT VSMs. When used on Texas Instruments ' non-consumer division products (such as generic voice chips for other computers/measurement devices which were still TI-branded) the chips are labeled VMxxxxx. When used on 3rd party products, the chips are marked CMxxxxx instead. The numbering scheme for
130-524: The VSMs are always marked CDxxxxx where xxxxx is a 4 or 5 digit mask rom ID code, typically 23xx or 62xxx. The chips are SOMETIMES (typically after 1981) also marked TMC0350, as this seems to be the 'internal use class' of the chip. The very first VSMs (used in the Speak and Spell , 1978 version) were marked TMC0351 and TMC0352 and did not have a CD number. These two SEEM to have been 'grandfathered in' as CD2300 and CD2301, as all later VSMs start at CD2302 (used in
143-438: The chip keeps track of its own address pointer once loaded. Hence every bit in the chip can be sequentially read out, even though internally the chip stores data in 8-bit bytes. (For the following section, CE stands for "Chip Enable" and is used as a way to enable one specific VSM.) The VSM has supports 4 basic commands, based on two input pins called 'M0' and 'M1': When used on Texas Instruments ' Consumer Division products,
SECTION 10
#1732794209044156-520: Was designed for Texas Instruments by Larry Brantingham, Paul S. Breedlove, Richard H. Wiggins, and Gene A. Frantz and its silicon was laid out by Larry Brantingham. The chip was designed for the 'Spelling Bee' project at TI , which later became the Speak & Spell . A speech-less 'Spelling B' was released at the same time as the Speak & Spell . All TI LPC speech chips until the TSP50cxx series used PMOS architecture, and LPC-10 encoding in
169-431: Was mask-programmed with LPC data required for a specific product. It holds 128 Kib (16 KiB) of data, and is mask-programmed with a start address for said data on a 16 KiB boundary. It is also mask-programmable whether the /CE line needs to be high or low to activate, and also what the two (or four) 'internal' CE bits need to be set to activate, effectively making the total addressable area 18 bits. Finally, it
#43956