# aubiomfcc - Man Page

a command line tool to compute Mel-Frequency Cepstrum Coefficients

## Synopsis

aubiomfccsourceaubiomfcc[[-i]source] [-rrate] [-Bwin] [-Hhop] [-Ttime-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.

## Referenced By

aubiocut(1), aubionotes(1), aubioonset(1), aubiopitch(1), aubioquiet(1), aubiotrack(1).