VOICE main 8 bits D7811 (part of 7810 CPU) family manages up to 5 voices polyphony.
A/D at 12 bits and D/A at 16 bits, frequency response range: 20 Hz to 20 KHz.
The DSP features a double set of Texas Instruments TMS320 IC, also worth mentioning the BA9221 converter IC same found on sampler Akai S900 or classic FM synthesizer Yamaha DX-7.
EDIT INTERFACE DVP-1
Edit is a bit tedious with single parameter enter (scaled values) but easy to use: just plug the MIC, sing or make a speech entering notes from a Midi keyboard.
The engine works in 3 main modes:
- pitch shifter.
MODE 1 VOCODER the classic seventies effect revisited during the eighties taking advantage of Midi implementing some advanced (for the time) intelligibility functions like:
formant shift: changes the vowel colors (info picture)
- breath bypass: threshold sets amount of processed/bypassed consonants
pitch threshold: enhances threshold frequency between consonant and vowel intelligibility, especially useful for sibilant hiss like letter "S".
The DVP-1 vocoder uses only 8 internal ROM-stored waveforms (all choir-like) as carrier instead of traditional input, this is very frustrating compared to old-school or actual vocoders.
||female A 2
||male A 2
|male A 3
MODE 2 PITCH SHIFTER this mode changes the incoming pitch in a +/- 12 semitones range from chipmunks to evil trolls.
MODE 3 HARMONIZER up to 5 notes can be generates for harmonized choruses.
Each note can be set to a specific +/-12 semitones interval or directly defined using the CHORD MEMORY (just input a broken chord then a single note for real-time transpose)
ENVELOPE up to 2 EGs:
EG pitch 4-segments ADSR with possible polarity inversion
- EG amplitude features a 2-segments AD.
Special FREEZE mode holds a brief cycled section (assignable also to pedalswitch) that can be also played by Midi like a synthesizer sound.
LFO single delayed modulators and 2 destinations with variable intensity:
- LFO pitch
- LFO amplitude.
The modulator can be assigned to standard Midi pitchbender.
PERFORMANCE some handy functions:
unison: stacks all the voices together for a fatter sound
- portamento: with variable time
- noise gate circuit : prevents noises or feedbacks (relative threshold can be set)
- split zone: vocoder or harmonizer can limited to a specific masterkeyboard range
- detune: each 5 voice can be detuned (coarse / fine)
EFFECT there is a digital chorus onboard but it reduces polyphony from 5 to 4 voices.
- 64 patch memories.
Memory system works with a soldered 3V CR-2032, battery replacement needs soldering skills.
EDITOR not much around but classic (and boring):
- Soundquest (pc / mac, commercial).
||MEX-8000 expansion memory for DVP1.
Same used by synthesizer DW-8000
||VC-10 DVP1 ancestor part of the MS families like icon MS20 analog synth VIDEO
||EX8000 not directly related, but they do features a very very similar case.
VST PLUGIN there is no official VST plugin, however some spring reverb emulators:
DVP1 AUDIO DEMO
VIDEO CLIP SELECTION