part2txt
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## part2txt

part2txt — Write a text file containing partial tracks data

## Description

The part2txt opcode takes a PVS_TRACKS fsig input and writes the data as sequence of track lists, one for each time point, to a line-oriented text file. Each track is placed on a separate line containing the amplitude, frequency, phase, and track ID. A separator line containing four -1.0 values is used to define the end of the track list for a given time point.

## Syntax

    part2txt SFile,ftrks

## Initialization

SFile -- output filename

## Performance

ftrks -- output pv stream in TRACKS format

## Example

Here is an example of the part2txt opcodes. It uses the file part2txt.csd.

Example 725. Example of the part2txt opcodes.

See the sections Real-time Audio and Command Line Flags for more information on using command line flags.

    <CsoundSynthesizer>
    <CsOptions>
    -n
    </CsOptions>
    <CsInstruments>

    instr 1
    isiz = 2048
    ihsiz = isiz/4
    S1 = "flutec3.wav"
    p3 = filelen(S1)
    ain diskin2 S1,1
    ffr,fphs  pvsifd   ain, isiz, ihsiz, 1
    ftrk      partials ffr, fphs, 0.01, 1, 1, 500
    part2txt "partialsh.txt",ftrk
    endin

    </CsInstruments>
    <CsScore>
    i1 0 1
    </CsScore>
    </CsoundSynthesizer>

The example above shows partial tracking of an ifd-analysis signal and cubic-phase additive resynthesis with pitch shifting.

## Credits

Author: Victor Lazzarini
June 2015

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