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part2txt

Write a text file containing partial tracks data

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 of the part2txt opcodes.
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<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.

See also

Tools for Real-time Spectral Processing (pvs opcodes)

Credits

Author: Victor Lazzarini
June 2015