Man1 - aubionotes.1

Table of Contents


*aubionotes *- a command line tool to extract musical notes


  aubionotes source
  aubionotes [[-i] source]
             [-r rate] [-B win] [-H hop]
             [-O method] [-t thres] [-d drop]
             [-p method] [-u unit] [-l thres]
             [-T time-format]
             [-s sil]
             [-j] [-v] [-h]


aubionotes attempts to detect notes by looking for note onsets and pitches. Consecutive events are segmented using onset detection, while a fundamental frequency extraction algorithm determines their pitch.

When started with an input source/* (-i–input), the detected notes are* printed on standard output, in seconds and midi note number.

When started without an input source/*, or with the jack option (-j–jack),* aubionotes starts in jack mode.


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.
*-O, –onset */method/
The onset detection /method/* to use. See ONSET METHODS* below. Defaults to ’default’.
*-t, –onset-threshold */thres/
Set the threshold value for the onset peak picking. Typical values are typically within 0.001 and 0.900. Defaults to 0.1. Lower threshold values imply more onsets detected. Try 0.5 in case of over-detections. Defaults to 0.3.
-M, –minioi value
Set the minimum inter-onset interval, in seconds, the shortest interval between two consecutive notes. Defaults to 0.030
*-p, –pitch */method/
The pitch detection /method/* to use. See PITCH METHODS* below. Defaults to ’default’.
*-u, –pitch-*/unit/ unit
The /unit/* to be used to print frequencies. Possible* values include midi, bin, cent, and Hz. Defaults to ’Hz’.
*-l, –pitch-tolerance */thres/
Set the tolerance for the pitch detection algorithm. Typical values range between 0.2 and 0.9. Pitch candidates found with a confidence less than this threshold will not be selected. The higher the threshold, the more confidence in the candidates. Defaults to unset.
*-s, –silence */sil/
Set the silence threshold, in dB, under which the pitch will not be detected. A value of -20.0 would eliminate most onsets but the loudest ones. A value of -90.0 would select all onsets. Defaults to -90.0.
*-d, –release-*/drop/
Set the release /drop/* threshold, in dB. If the level drops* more than this amount since the last note started, the note will be turned off. Defaults to 10.
-T, –timeformat format
Set time format (samples, ms, seconds). Defaults to seconds.
-j, –jack
Use Jack input/output. You will need a Jack connection controller to feed aubio some signal and listen to its output.
-h, –help
Print a short help message and exit.
-v, –verbose
Be verbose.


Available methods: default, energy, hfc, complex, phase, specdiff, kl, mkl, specflux.

See aubioonset(1) for details about these methods.


Available methods: default, schmitt, fcomb, mcomb, specacf, yin, yinfft, yinfast.

See aubiopitch(1) for details about these methods.


aubioonset(1), aubiopitch(1), aubiotrack(1), aubioquiet(1), aubiomfcc(1), and aubiocut(1).


This manual page was written by Paul Brossier <>. 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.

Author: dt

Created: 2022-02-22 Tue 16:29