ref: f0ce8aa38a9a315283eab3f2244fb0cbfc4bca08
dir: /doc/aubiomfcc.txt/
NAME
aubiomfcc - a command line tool to compute Mel-Frequency Cepstrum Coefficients
SYNOPSIS
aubiomfcc source
aubiomfcc [[-i] source]
[-r rate] [-B win] [-H hop]
[-T time-format]
[-v] [-h]
DESCRIPTION
aubiomfcc compute the Mel-Frequency Cepstrum Coefficients (MFCC).
MFCCs are coefficients that make up for the mel-frequency spectrum, a
representation of the short-term power spectrum of a sound. By default, 13
coefficients are computed using 40 filters.
When started with an input source (-i/--input), the coefficients are given on
the console, prefixed by their timestamps in seconds.
OPTIONS
This program follows the usual GNU command line syntax, with long options
starting with two dashes (--). A summary of options is included below.
-i, --input source Run analysis on this audio file. Most uncompressed and
compressed are supported, depending on how aubio was built.
-r, --samplerate rate Fetch the input source, resampled at the given
sampling rate. The rate should be specified in Hertz as an integer. If 0,
the sampling rate of the original source will be used. Defaults to 0.
-B, --bufsize win The size of the buffer to analyze, that is the length
of the window used for spectral and temporal computations. Defaults to 512.
-H, --hopsize hop The number of samples between two consecutive analysis.
Defaults to 256.
-T, --timeformat format Set time format (samples, ms, seconds). Defaults to
seconds.
-h, --help Print a short help message and exit.
-v, --verbose Be verbose.
REFERENCES
Using the default parameters, the filter coefficients will be computed
according to Malcolm Slaney's Auditory Toolbox, available at the following
url:
http://cobweb.ecn.purdue.edu/~malcolm/interval/1998-010/ (see file mfcc.m)
SEE ALSO
aubioonset(1),
aubiopitch(1),
aubiotrack(1),
aubionotes(1),
aubioquiet(1),
and
aubiocut(1).
AUTHOR
This manual page was written by Paul Brossier <piem@aubio.org>. Permission is
granted to copy, distribute and/or modify this document under the terms of
the GNU General Public License as published by the Free Software Foundation,
either version 3 of the License, or (at your option) any later version.