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The Roland MT-32 Multi-Timbre Sound Module is a MIDI synthesizer module first released in 1987 by Roland Corporation. Along with its compatible modules, it established an early ''de facto'' standard in computer music and was the first product in Roland's Musikun (ミュージくん) line of Desktop Music System (DTM) packages in Japan. Within Roland's family of LA synthesizers, the multitimbral MT-32 series constitutes the budget prosumer line for computer music at home, the multitimbral D-10/D-20/D-110 models the professional line for general studio use, and the high-end monotimbral D-50/D-550 models for sophisticated multi-track studio work. ==Features== Like the Roland D-50 Linear Synthesizer, it uses Linear Arithmetic synthesis, a form of sample-based synthesis combined with subtractive synthesis, to produce its sounds. Samples are used for ''attacks'' and drums, while traditional synthesis assures the ''sustain'' phase of the sounds. The original MT-32 comes with a preset library of 128 synth and 30 rhythm sounds, playable on 8 melodic channels and one rhythm channel.〔(), MT-32 Owner's Manual.〕 It also features a digital reverberation effect.〔 Successors (see below) added a library of 33 sound effects. Because of the absence of a piano attack sample, it cannot play a convincing acoustic piano sound. Being a synthesizer rather than a ''wavetable'' sample-based device, the MT-32 is very programmable. Sounds are created from up to 4 ''partials'' which can be combined in various ways (including ring modulation). With 32 partials available overall, polyphony depends on the tonal complexity of the music, and 8 to 32 notes can be played simultaneously.〔 The MT-32 by default assigns its parts 1~8 and R(hythm) to respond on input MIDI channels 2~9 and 10 respectively. By consequence, MIDI files using the popular channel 1 or the other channels 11~16 cannot have those parts played on the MT-32. However, the MT-32's melodic parts can be shifted down to respond to channels 1~8 using a button combination or through MIDI ''system exclusive'' messages, enabling improved compatibility with non-MT-32-specific MIDI sequences. Additionally, in 1993 Roland released the "GM2MT" SysEx pack, which can be used to reprogram the MT-32 and compatibles to match General MIDI specifications as close as possible.〔http://cms.rolandus.com/assets/media/exe/MT2GM.EXE〕 64 of the 128 patches (the limit of possible variations) are completely new or modified sounds, with additional sounds having been added to drum channel 10. Despite this, compatibility with GM is still limited by the lack of parts (9 on the MT-32, 16 per GM specification) and reversed panpot compared to MMA MIDI specifications. The utility was predated by a pack called "MT32GS", released by Mike Cornelius in 1992.〔http://ftp.monash.edu.au/pub/midi.songs/unsorted/M/mt32gs.doc〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Roland MT-32」の詳細全文を読む スポンサード リンク
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