# Sine Osc Unit

This unit is a full-featured sine oscillator with inputs for both exponential and linear frequency moduleation (FM), phase modulation (PM), amplitude modulation (AM) and feedback. The linear FM supports thru-zero operation.

## Common Oscillator Controls

• V/oct: Transpose fundamental by an amount in cents.
• f0: Set the fundamental frequency in Hz.
• phase: Set phase as percentage of one period.
• sync: Trigger a reset to the beginning of a cycle.
• level: Set the output gain.

## Special Controls

### feedback

The feedback parameter determines how much of the unit’s (pre-level) output should be used to self-modulate the phase offset. Increasing amounts of feedback causes the sine wave to morph into a saw-like or ramp-like waveform.

For low frequencies (<55Hz) and high feedback amounts (>0.95), the oscillator will turn chaotic briefly as it passes through zero.