LPCSynth

Extension

Description

LPCSynth uses data from a LPC data file to filter a signal.

Class Methods

.ar

Examples

This uses the fate.lpc file, created with the following command:

lpanal -p 50 -h 300 fate.aiff fate.lpc

• -p = num poles
• -h = hop size in samples

Analysis window is 2X the hop size.s.boot; // this file came with the JoshUGens... Leonard Bernstein talking about Beethoven. // Place it in your SC3/sounds directory. a = LPCFile.new(Platform.resourceDir +/+ "sounds/fate.lpc", server: s).loadToBuffer; ( z = { var cps, rmso, err, voc, noise, timepoint, dur; timepoint = LFSaw.ar(0.4/a.sndDur, 1, 0.5, 0.5); # cps, rmso, err = LPCVals.ar(a.buffer, timepoint); // a periodic Blip to filter, amplitude is 1 - error noise = WhiteNoise.ar(err); // a noise source voc = Blip.ar(cps, 100); // the rms values tend to be high... scale them back quite a bit! Out.ar(0, LPCSynth.ar(a.buffer, voc + noise, timepoint, rmso)); }.play(s) ) z.free; // clean up s.sendBundle(0.1, [\b_free, a.buffer]);