Architecture
The Voyetra-8 has 8 separate programmable analog voice cards. Each produces one voice of the maximum 8. It can store 100 "Voices", and can play either one 8-voice sound in Whole-8 mode, a different 4-voice sound on each half of the keyboard (or on different MIDI channels) in Split mode, or two 4-voice sounds per note (which could both be the same) in Layer mode.
The keyboard mode, key assignment mode, two selected sounds, and a number of parameter trims and tweaks (such as octave shift on either Voice, detune, and cutoff frequency offset) are stored as a "Step". The instrument can store 100 Steps. Generally, a performer will call up Steps, not Voices, during live performance; each Step will call up two of the Voices and tweak them for the song to be played.
Each voice has two VCOs, one VCA, one 24dB/octave lowpass VCF, two LFOs, two ADSRs, noise generator, sync VCO 1 to VCO 2. (More detailed specs follow.)
The specs belie the complexity of the sound architecture, because of the great deal of control the programmer (and the player) has over various aspects of sound production, including key assignment modes, modulation routing, and envelope parameters.
Read more about this topic: Voyetra-8
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