# sawfilterednoise.dsp

Filtered noise with sawtooth modulation.

### Function

This instrument passes white noise through the state variable filter. The filter cutoff frequency is modulated with a sawtooth instrument. This is useful for helicopters or other "whop, whop" sounds

### Knobs

Amplitude - 0 => $7FFF, final amplitude of voice

Frequency - 0 => $2000, default $100. Non-linear cutoff frequency of filter.

Resonance - 1 / Q, 0 => $6000, default $1000 = filter will ring at low values.

LFORate - 0 => $0100, default $0020, rate of sawtooth modulating filter

LFODepth - 0 => $2000, default $0100, Amplitude of sawtooth modulating filter. Actual cutoff is = Frequency + SawtoothOutput*LFODepth.

### Inputs

None

### Outputs

Output

### Input FIFOs

None

### Output FIFOs

None

### Resource

Ticks = 31

N memory = 29 words