furnace/doc/4-instrument/multipcm.md

MultiPCM instrument editor

the MultiPCM instrument editor contains three tabs: Sample, MultiPCM and Macros.

Sample

for sample settings, see the Sample instrument editor.

MultiPCM

MultiPCM contains an ADSR envelope, not unlike Yamaha OPN/OPM envelopes, and simple LFO, also similiar to that found in OPN.

you may use this tab to set up MultiPCM-specific parameters:

• AR: sets Attack Rate.
• D1R: sets Decay 1 Rate.
• DL: sets Decay Level (analogue of Sustain Level on OPN chips).
• D2R: sets Decay 2 Rate (a.k.a. SR, Sustain Rate).
• RR: sets Release Rate.

• RC: sets Rate Correction amount. similar to Key Scale or Rate Scale in FM parameters, this determines the degree to which the envelope execution speed increases according to the pitch.
• LFO Rate: sets speed of LFO.
• PM Depth: sets depth of LFO vibrato.
• AM Depth: sets depth of LFO tremolo/amplitude modulation.
• Damp: enforce quickly fading out the sample over 11 ms.
• Pseudo Reverb: enables reverb-like effect.
• LFO Reset: disables and resets LFO.
• Disable volume change ramp: if set to "on", volume change interpolation is disabled.

Macros

• Volume: volume sequence.
• Arpeggio: pitch sequence.
• Panning: output level for left and right channels (from -3 to +3).
• Pitch: fine pitch.
• Phase Reset: trigger restart of waveform.
• LFO Speed: sequence of LFO speeds.
• LFO Vib depth: LFO vibrato sequence.
• LFO Vib depth: LFO tremolo sequence.