# NES instrument editor

the instrument editor for NES consists of these macros:

- **Volume**: volume sequence.
- **Arpeggio**: pitch sequence.
- **Duty/Noise**: duty cycle and noise mode.
  - pulse duty cycles:
    - `0`: 12.5%
    - `1`: 25%
    - `2`: 50%
    - `3`: 75%
  - noise modes:
    - `0`: long noise
    - `1`: short noise
- **Pitch**: fine pitch.
- **Phase Reset**: trigger restart of waveform.