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:

https://engineering.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.