TECH main CPU D78C10 manages 8 voices polyphony based on SD spectrum Dynamic Synthesis + a drum section based on PCM samples.
the 8 DCO voices are shared into 2 parts:
- 4 for main part, out of 31 waves
- 4 for accompaniment part (wave choice reduced to 16 waveforms).
WAVES according to TableHooters, the waves are generated by a combination of 2 multipulses PCM waves. These combinated waves generate a total of 31 cycled waves with altered harmonic contents and new overtones.
DRUM WAVETABLE the ROM also contains more commons PCM samples waveforms (x15) at low resolution: kick, snare, rimshot, hihat (x2), handclap, tom (x2), timbale (x2), bongo (x2) and agogo (x2).
INTERFACE the HT700 interface is quite simple, but lacks many real-time tweaks:
TIP: assign the jogwheel to filter cutoff for realtimel tweak.
FILTER paraphonic analog lowpass filter with resonance (no self-oscillation) based on NJM2069 same found on synthesizer Korg Poly 800 and sampler DSS1.
(upper) low pass IC NJM2069
LFO a single delayed modulator (shapes: saw up, saw down, triangle, square and random ) with fixed DCO pitch destination but variable depth.
NOTE: maximum frequency is pretty slow, not to mention a lack of LFO to VCF.
ENVELOPE 2 EGs:
- EG1 amplitude: 4-stages ADSR
- EG2 filter: 4-stages ADSR.
SEQUENCER internal arranger with various functions like chords definition, pitch transposition, auto-accompaniment and tempo change. Each parts is assigned to a single Midi channel and transmits the relative sequence. The internal ROM contains 20 cheesy style presets: rock (x2), beat (x4), disco (x2), pops (x2), swing, slow rock, samba, bossanova, waltz, march, beguine, salsa, reggae, and kraftwerk-style electro pop.
SYNC Sequences, rhythms and accompaniment can be slaved to external Midi clock.
EFFECT chorus with 3 fixed presets values.
Some boards reported BBD Panasonic+ MN3207.
20 ROM sound
- 20 styles.
100 RAM patches.
Expansion CASIO RA-100 card doubles the memory (we're now out of stock!)
MIDI basic implementation features only pitch bender control and sustain CC#.
Absolutely NO Exclusive system for edit.
TIP:Send and receive channel can be set to 1-13 (Chord = send and receive +1, Bass = send and receive +2, Rhythm = send and receive +3)
Ht-700 related models:
VST PLUGIN / SAMPLED VERSION