furnace/doc/4-instrument/snes.md

1.5 KiB

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.

Macros

  • 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