hetro(1)
NAME
- hetro - hetrodyne filter analysis for the Csound adsyn
- generator
SYNOPSIS
hetro [options] infile outfile csound -U hetro [options] infile outfile
DESCRIPTION
- hetro decomposes the input file into component sinusoids
- and outputs the breakpoint amplitude and frequency tracks.
OPTIONS
- -s<srate>
- Override the sampling rate of the soundfile header.
- The default is 10000 if the sampling rate is not specified in the
- header or with this option. Note that the srate for the soundfile
- and the generating orchestra do not need to be the same for adsyn
- synthesis.
- -c<channel>
- Default is 1.
- -b<begin>
- Beginning time, in seconds. Default is 0.0.
- -d<duration>
- Duration, in seconds. Default is 0.0 (the entire
- file). The maximum length is 32.766 seconds.
- -f<frequency>
- Estimated starting frequency, in cps, in order to
- initialize the filter analysis. The default is 100.
- -h<partials>
- Number of harmonic partials. The default is 10, and
- the maximum is as much as you have memory for.
- -M<amplitude>
- The maximum amplitude, summed across all concurrent
- tracks. The default is 32767.
- -m<amplitude>
- The minimum amplitude threshold. A single ampli
- tude/frequency track below this threshold will be considered dor
- mant and not contribute to the output summation. Some typical
- values are: 128 (48 db down from full scale), 64 (54 db down), 32
- (60 db down), 0 (no thresholding). The default is 64.
- -n<breakpoints>
- Number of analysis breakpoints in each amplitude
- and frequency track, prior to thresholding (-m) and linear break
- point consolidation. The initial points are spread evenly over
- the duration. Default is 256.
- -l<frequency>
- Substitute a 3rd order Butterworth low-pass filter
- with cutoff frequency frequency (Hz), in place of the default av
- eraging comb filter.
SEE ALSO
csound(1), lpanal(1), pvanal(1), cvanal(1).
- Csound is documented fully by The Public Csound Manual,
- available at http://www.lakewoodsound.com/csound/
- Csound is also documented by The Alternative Csound
- Reference Manual, available at http://kevindump
- score.com/docs/csound-manual/
AUTHOR
- This manual page was written by Hans Fugal <hans@fu
- gal.net>, for the Debian project (but may be used by others).
21 Jul 2003