PermMod
Extension
ExtensionDescription
This UGen takes an audio-rate input and commutes chunks of samples, swapping the odd chunks and the even ones. To avoid bad behaviour, "freq" parameter must always be strictly > 0 and <= double the input samplerate. High frequencies lead to distortion and resonance, low frequencies lead to auto-arpeggio-like and repetition-like effects.
Class Methods
.ar
Arguments:
| in |
An audio-rate input. |
| freq |
The frequency at which you wish the permutation to occur. For example, a 100Hz value applied on a 44100Hz input generates chunks of 441 samples. Since chunks must contain an integer number of samples, some frequencies yield the same result, because the chunk length is rounded. |
| mul |
Output will be multiplied by this value. |
| add |
This value will be added to the output. |
Returns:
A commuted audio-rate output.
Examples
// Permute a simple sinusoid ten times its frequency: {PermMod.ar(SinOsc.ar(220),2200)}.play // Modulate both the sinusoid's and the permutation frequency with the mouse: {PermMod.ar(SinOsc.ar(MouseY.kr(0,440)), MouseX.kr(500, 8800))}.play // Distort any input with an Electronic Telephone Ring effect: {PermMod.ar(SoundIn.ar(0),Pulse.kr(10,0.5,1000,2000))}.play // Remember to use strictly positive unipolar signals as control, in this case the "add" parameter is 1000. // Quantized frequency-sweep-like effect on existing file: b = Buffer.read(s, 'C:/Folder/File.wav') {PermMod.ar(PlayBuf.ar(2, b),SinOsc.kr(0.1,0,2000,4000))}.play
link::sc3-plugins/Classes/PermMod::