pvsceps — Calculate the cepstrum of a pvs input, optionally liftering coefficients.
icoefs -- the number of retained coefficients in the cepstrum output. By default, no coefficients are liftered.
keps[] -- the cepstrum output, an array of size N/2+1, where N is equivalent to the FFT size of the input fsig.
fsig -- an input pv stream
Here is an example of the use of the pvsceps opcode. Play pvsceps.csd
Example 821. Example of the pvsceps opcode.
See the sections Real-time Audio and Command Line Flags for more information on using command line flags.
<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform ; Audio out Audio in -odac ;;;RT audio out ; For Non-realtime ouput leave only the line below: ; -o pvsceps.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 ksmps = 32 nchnls = 2 0dbfs = 1 instr 1 a1 diskin "fox.wav",1,0,1 k1 randh 80, 2.5 a2 vco2 8, 220+k1 fsig pvsanal a1,1024,256,1024,1 fsig2 pvsanal a2,1024,256,1024,1 keps[] pvsceps fsig, p4 kenv[] cepsinv keps fenv tab2pvs r2c(kenv) fvoc pvsfilter fsig2, fenv, 1 asig pvsynth fvoc outs asig, asig endin </CsInstruments> <CsScore> i1 0 30 30 ; p4 -= the number of retained coefficients i1 31 10 5 e </CsScore> </CsoundSynthesizer>