3/9/2023 0 Comments Gm sf2 vst![]() Back in the mists of time the powers that be suggested a fixed collection of 128 instruments in a certain order so if you played the same MIDI file to different sound sources, as long as they implemented the GM list, it would sound similar. ![]() ![]() Then I started to think about "General MIDI". Now my first thought was simply to add just the same instruments as VL-1 (Piano, Flute, Violin etc) but I'm also a sucker for the sound of Church Organ so I thought I might add that too. Which is invoked with Python 3.6 using "python controller.py": Well Teensy Audio not only has waveform generators (VCO), Envelopes, Filters and so on but there is also:Īnd this uses an instrument that can be extracted from an SF2 SoundFont file (this format originally created for the Creative Soundblaster AWE32 - a card I bought about 20+ years ago!!) using: So the "ADSR" one (at right) basically meant the synth where the calculator memory was used to define wave shape, attack, decay, sustain, release, etc but then it also had 5 "real" instruments: Piano, "Fantasy", Violin, Flute and Guitar and clearly these used some kind of wavetable to provide the shape of the note that would then be scaled to the right frequency of the note played. ![]() Going right back to the start of these pages you'll see that the initial inspiration to design and build a synth was "something a bit like a Casio VL-Tone/VL-1".
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