128 These sounds are organized into categories, however, similar to those of General MIDI (pianos, organs, synthetic chromatic, guitar, percussion), but like any good MIDI device, it is possible to reorganize these sounds via SysEx files specific to to make the MT-32 partially compatible with General MIDI. It offers 128 sounds, but not compatible with the General MIDI standard, which appeared in 1991, four years after its release. On some newer MT-32, a headphone jack has also made its appearance. Regarding the audio connections, a MT-32 offers two basic female output jacks to 6.35 mm format, right and left / mono. Level effects, there is only one, the essential reverb, whose intensity is adjustable to a level of 0 (no reverb) to 10 (maximum reverb). Its maximum polyphony is four waves / sound samples per instrument, which makes us a total of 8 instruments x = 4 components polyphony 32 "notes" simultaneously, hence the name "multi-timbral 32".
Compatible with MIDI, however, there are three MIDI standard round (In, Out, Through) and can reproduce up to 8 instruments simultaneously on eight MIDI channels (channels 2-9) and a percussion track on channel 10. The expander, because of its rather unique position in the market, not to my knowledge, a model "rack" as is. ) who proposed to reproduce their soundtrack through the synthesizer instead of MIDI synthesis AdLib, technology much less powerful (as composed solely of synthetic sounds FM), but also much more affordable, at a time when sound cards like Sound Blaster just beginning to become more democratic in the PC. Indeed, many PC games of that time, particularly those of Sierra (The Secret of Monkey Island, Leisure Suit Larry, King Quest. Sharing the same technology as the famous Sound Roland D-50 from the same period (Linear Arithmetic synthesis, combining synthetic waveforms to real samples of musical instruments in PCM), it was considered at the time, more as a MIDI sound card high-end as a full MIDI expander. The MT-32 is a small MIDI compatible sound module released in 1987.
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