ceps — Calculate the cepstrum of an array input, optionally filtering coefficients.
icoefs -- the number of retained coefficients in the cepstrum output. By default, no coefficients are filtered.
keps[] -- the cepstrum output, an array of size N+1, where N is a power of two.
kmags[] -- an input array containing N+1 magnitudes.
Here is an example of the use of the ceps opcode. It uses the file ceps.csd.
Example 126. Example of the ceps opcode.
See the sections Real-time Audio and Command Line Flags for more information on using command line flags.
<CsoundSynthesizer> <CsOptions> </CsOptions> <CsInstruments> instr 1 a1 diskin "fox.wav",1,0,1 k1 randh 80, 2.5 a2 vco2 1, 220+k1 kfsig[] init 1026 fsig pvsanal a1,1024,256,1024,1 fsig2 pvsanal a2,1024,256,1024,1 kf pvs2tab kfsig,fsig keps[] ceps c2r(kfsig),30 kenv[] cepsinv keps fenv tab2pvs r2c(kenv) fvoc pvsfilter fsig2, fenv, 1 asig pvsynth fvoc out asig endin </CsInstruments> <CsScore> i1 0 60 </CsScore> </CsoundSynthesizer>