cepsinv — Calculate the inverse cepstrum of an array.
keps[] -- the cepstrum input, an array of size N+1, where N is power-of-two, containing the cepstral coefficients.
kenv -- the inverse cepstrum (spectral envelope), an array of N+1 magnitudes.
Here is an example of the use of the cepsinv opcode. It uses the file cepsinv.csd.
Example 127. Example of the cepsinv 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 8, 220+k1 fsig pvsanal a1,1024,256,1024,1 fsig2 pvsanal a2,1024,256,1024,1 keps[] pvsceps fsig,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>