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Signed-off-by: B. Watson <urchlay@slackware.uk> Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>
89 lines
2.6 KiB
Groff
89 lines
2.6 KiB
Groff
.\" Text automatically generated by txt2man
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.TH AUBIOMFCC 1 "22 July 2023" "aubio 0.4.9" "aubio User's manual"
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.SH NAME
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\fBaubiomfcc \fP- a command line tool to compute Mel-Frequency Cepstrum Coefficients
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\fB
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.SH SYNOPSIS
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.nf
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.fam C
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\fBaubiomfcc\fP \fIsource\fP
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\fBaubiomfcc\fP [[\fB-i\fP] \fIsource\fP]
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[\fB-r\fP \fIrate\fP] [\fB-B\fP \fIwin\fP] [\fB-H\fP \fIhop\fP]
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[\fB-T\fP \fItime-format\fP]
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[\fB-v\fP] [\fB-h\fP]
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.fam T
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.fi
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.fam T
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.fi
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.SH DESCRIPTION
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\fBaubiomfcc\fP compute the Mel-Frequency Cepstrum Coefficients (MFCC).
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.PP
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MFCCs are coefficients that make up for the mel-frequency spectrum, a
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representation of the short-term power spectrum of a sound. By default, 13
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coefficients are computed using 40 filters.
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.PP
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When started with an input \fIsource\fP (\fB-i\fP/\fB--input\fP), the coefficients are given on
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the console, prefixed by their timestamps in seconds.
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.SH OPTIONS
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This program follows the usual GNU command line syntax, with long options
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starting with two dashes (--). A summary of options is included below.
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.TP
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.B
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\fB-i\fP, \fB--input\fP \fIsource\fP
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Run analysis on this audio file. Most uncompressed and
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compressed are supported, depending on how aubio was built.
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.TP
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.B
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\fB-r\fP, \fB--samplerate\fP \fIrate\fP
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Fetch the input \fIsource\fP, resampled at the given
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sampling \fIrate\fP. The \fIrate\fP should be specified in Hertz as an integer. If 0,
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the sampling \fIrate\fP of the original \fIsource\fP will be used. Defaults to 0.
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.TP
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.B
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\fB-B\fP, \fB--bufsize\fP \fIwin\fP
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The size of the buffer to analyze, that is the length
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of the window used for spectral and temporal computations. Defaults to 512.
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.TP
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.B
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\fB-H\fP, \fB--hopsize\fP \fIhop\fP
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The number of samples between two consecutive analysis.
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Defaults to 256.
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.TP
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.B
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\fB-T\fP, \fB--timeformat\fP format
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Set time format (samples, ms, seconds). Defaults to
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seconds.
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.TP
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.B
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\fB-h\fP, \fB--help\fP
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Print a short help message and exit.
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.TP
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.B
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\fB-v\fP, \fB--verbose\fP
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Be verbose.
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.SH REFERENCES
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Using the default parameters, the filter coefficients will be computed
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according to Malcolm Slaney's Auditory Toolbox, available at the following
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url:
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.PP
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https://engineering.purdue.edu/~malcolm/interval/1998-010/ (see file mfcc.m)
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.SH SEE ALSO
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\fBaubioonset\fP(1),
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\fBaubiopitch\fP(1),
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\fBaubiotrack\fP(1),
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\fBaubionotes\fP(1),
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\fBaubioquiet\fP(1),
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and
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\fBaubiocut\fP(1).
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.SH AUTHOR
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This manual page was written by Paul Brossier <piem@aubio.org>. Permission is
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granted to copy, distribute and/or modify this document under the terms of
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the GNU General Public License as published by the Free Software Foundation,
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either version 3 of the License, or (at your option) any later version.
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