# AY8930 instrument editor

AY8930 instrument editor consists of 10 macros.

- [Volume] - volume levels sequence
- [Arpeggio]- pitch sequence
- [Noise frequency] - AY8930 noise generator frequency sequence
- [Waveform] - selector of sound type - pulse wave tone, noise or envelope generator
- [Duty cycle] - duty cycle of a pulse wave sequence
- [Envelope] - allows shaping an envelope
- [Auto envelope numerator] - sets the envelope to the channel's frequency multiplied by numerator
- [Auto envelope denominator] - sets the envelope to the channel's frequency multiplied 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