## table of contents

AUBIOMFCC(1) | aubio User's manual | AUBIOMFCC(1) |

# NAME¶

**aubiomfcc **- 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.

30 January 2023 | aubio 0.4.9 |