pvsceps
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## pvsceps

pvsceps — Calculate the cepstrum of a pvs input, optionally liftering coefficients.

## Description

## Syntax

    keps[] pvsceps fsig[, icoefs]

## Initialization

icoefs -- the number of retained coefficients in the cepstrum output. By default, no coefficients are liftered.

## Performance

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

## Examples

Here is an example of the use of the pvsceps opcode. It uses the file pvsceps.csd.

Example 789. 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>
    </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>

## See Also

pvsanal, pvsynth, pvsadsyn, pvspitch

## Credits

Author: Victor Lazzarini
2014

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