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furnace/doc/4-instrument/8930.md
Electric Keet 4748e185a7 Fixing something I botched. 
Hey, all those files I thought I clobbered!
2023-06-23 18:13:37 -07:00

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AY8930 instrument editor

AY8930 instrument editor consists of these macros.

  • Volume: volume sequence
  • Arpeggio: pitch in half-steps
  • Noise Freq: AY8930 noise generator frequency sequence
  • Waveform: selector of sound type: pulse wave tone, noise or envelope generator
  • Pitch: fine pitch
  • Phase Reset: trigger restart of waveform
  • Duty: duty cycle of a pulse wave sequence
  • Envelope: allows shaping an envelope
  • AutoEnv Num: sets the envelope to the channel's frequency multiplied by numerator
  • AutoEnv Den: sets the envelope to the channel's frequency divided by denominator
  • Noise AND Mask: alters the shape/frequency of the noise generator, allowing to produce various interesting sound effects and even PWM phasing
  • Noise OR Mask: see above