SNES instrument editor

these tabs are unique to the editor for SNES instruments.

SNES

Use envelope enables the ADSR volume envelope. if it's on:

A: attack rate.
D: decay rate.
S: sustain level.
D2: decay rate during sustain.
R: release rate.
Sustain/release mode:
- Direct: note release acts as note cut.
- Effective (linear decrease): after release, volume lowers by subtractions of 1/64 steps.
- Effective (exponential decrease): after release, volume decays exponentially. see gain chart.
- Delayed (write R on release): after release, waits until A and D have completed before starting exponential decrease.

if envelope is off, select gain mode as described below.

Volume: volume.
Arpeggio: pitch in half-steps.
Noise Freq: preset frequency of noise generator.
Waveform: waveform.
Panning (left): output level of left channel.
Panning (right): output level of right channel.
Pitch: fine pitch.
Special: bitmap of flags.
- invert left: inverts output of left channel.
- invert right: inverts output of right channel.
- pitch mod: modulates pitch using previous channel's output.
- echo: enables echo.
- noise: enables noise generator.
Gain: sets mode and value of gain.
- 0 - 127: direct gain from 0 to 127
- 128 - 159: linear gain from -0 to -31
- 160 - 191: exponential gain from -0 to -31
- 192 - 223: linear gain from +0 to +31
- 224 - 255: exponential gain from +0 to +31