Command line tools — aubio 0.4.6 documentation

# Command line tools

The python module comes with the following tools:

> - `aubio` estimate and extract descriptors from sound files
> - `aubiocut` slices sound files at onset or beat timestamps

More command line tools are included along with the library.

> - `aubioonset` outputs the time stamp of detected note onsets
> - `aubiopitch` attempts to identify a fundamental frequency, or pitch, for each frame of the input sound
> - `aubiomfcc` computes Mel-frequency Cepstrum Coefficients
> - `aubiotrack` outputs the time stamp of detected beats
> - `aubionotes` emits midi-like notes, with an onset, a pitch, and a duration
> - `aubioquiet` extracts quiet and loud regions

## `aubio`

    NAME
      aubio - a command line tool to extract information from sound files

    SYNOPSIS

      aubio [-h] [-V] <command> ...

    COMMANDS

      The general syntax is "aubio <command> <soundfile> [options]". The following
      commands are available:

      onset        get onset times
      pitch        extract fundamental frequency
      beat         get locations of beats
      tempo        get overall tempo in bpm
      notes        get midi-like notes
      mfcc         extract mel-frequency cepstrum coefficients
      melbands     extract mel-frequency energies per band

      For a list of available commands, use "aubio -h". For more info about each
      command, use "aubio <command> --help".

    GENERAL OPTIONS

      These options can be used before any command has been specified.

      -h, --help  show help message and exit

      -V, --version  show version

    COMMON OPTIONS

      The following options can be used with all commands:

      <source_uri>, -i <source_uri>, --input <source_uri>  input sound file to
      analyse (required)

      -r <freq>, --samplerate <freq>  samplerate at which the file should be
      represented (default: 0, e.g. samplerate of the input sound)

      -H <size>, --hopsize <size>  overlap size, number of samples between two
      consecutive analysis (default: 256)

      -B <size>, --bufsize <size>  buffer size, number of samples used for each
      analysis, (e.g. FFT length, default: 512)

      -h, --help  show help message and exit

      -T format, --time-format format  select time values output format (samples,
      ms, seconds) (default: seconds)

      -v, --verbose  be verbose (increment verbosity by 1, default: 1)

      -q, --quiet  be quiet (set verbosity to 0)

    ONSET

      The following additional options can be used with the "onset" subcommand.

      -m <method>, --method <method>  onset novelty function
      <default|energy|hfc|complex|phase|specdiff|kl|mkl|specflux> (default:
      default)

      -t <threshold>, --threshold <threshold>  threshold (default: unset)

      -s <value>, --silence <value>  silence threshold, in dB (default: -70)

      -M <value>, --minioi <value>  minimum Inter-Onset Interval (default: 12ms)

    PITCH

      The following additional options can be used with the "pitch" subcommand.

      -m <method>, --method <method>  pitch detection method
      <default|yinfft|yin|mcomb|fcomb|schmitt> (default: default, e.g. yinfft)

      -t <threshold>, --threshold <threshold>  tolerance (default: unset)

      -s <value>, --silence <value>  silence threshold, in dB (default: -70)

      The default buffer size for the beat algorithm is 2048. The default hop size
      is 256.

    BEAT

      The "beat" command accepts all common options and no additional options.

      The default buffer size for the beat algorithm is 1024. The default hop size
      is 512.

    TEMPO

      The "tempo" command accepts all common options and no additional options.

      The default buffer size for the beat algorithm is 1024. The default hop size
      is 512.

    NOTES

      The "note" command accepts all common options and no additional options.

    MFCC

      The "mfcc" command accepts all common options and no additional options.

    MELBANDS

      The "melbands" command accepts all common options and no additional options.

    EXAMPLES

      Extract onsets using a minimum inter-onset interval of 30ms:

        aubio onset /path/to/input_file -M 30ms

      Extract pitch with method "mcomb" and a silence threshold of -90dB:

        aubio pitch /path/to/input_file -m mcomb -s -90.0

      Extract MFCC using the standard Slaney implementation:

        aubio mfcc /path/to/input_file -r 44100

    SEE ALSO

      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.

## `aubiocut`

    NAME
      aubiocut - a command line tool to slice sound files at onset or beat timestamps

    SYNOPSIS

      aubiocut source
      aubiocut [[-i] source]
               [-r rate] [-B win] [-H hop]
               [-O method] [-t thres]
               [-b] [-c]
               [-v] [-q] [-h]

    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 set
      to 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'.

      -b, --beat  Use beat locations instead of onset locations.

      -t, --onset-threshold thres  Set the threshold value for the onset peak
      picking. Values are typically in the range [0.001, 0.900]. Lower threshold
      values imply more onsets detected. Increasing this threshold should reduce
      the number of incorrect detections. Defaults to 0.3.

      -c, --cut  Cut input sound file at detected labels. A new sound files for
      each slice will be created in the current directory.

      -o, --output directory  Specify the directory path where slices of the
      original source should be created.

      --cut-until-nsamples n  How many extra samples should be added at the end of
      each slice (default 0).

      --cut-until-nslices n  How many extra slices should be added at the end of
      each slice (default 0).

      -h, --help  Print a short help message and exit.

      -v, --verbose  Be verbose.

      -q, --quiet  Be quiet.

    ONSET METHODS

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

      See aubioonset(1) for details about these methods.

    SEE ALSO

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

## `aubioonset`

    NAME
      aubioonset - a command line tool to extract musical onset times

    SYNOPSIS

      aubioonset source
      aubioonset [[-i] source] [-o sink]
                 [-r rate] [-B win] [-H hop]
                 [-O method] [-t thres]
                 [-T time-format]
                 [-s sil] [-m] [-f]
                 [-j] [-N miditap-note] [-V miditap-velo]
                 [-v] [-h]

    DESCRIPTION

      aubioonset attempts to detect onset times, the beginning of discrete sound
      events, in audio signals.

      When started with an input source (-i/--input), the detected onset times are
      given on the console, in seconds.

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

    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.

      -o, --output sink  Save results in this file. The file will be created on
      the model of the input file. Onset times are marked by a short wood-block
      like sound.

      -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. Values are typically in the range [0.001, 0.900]. Lower threshold
      values imply more onsets detected. Increasing this threshold should reduce
      the number of incorrect detections. Defaults to 0.3.

      -M, --minioi value  Set the minimum inter-onset interval, in seconds, the
      shortest interval between two consecutive onsets. Defaults to 0.020

      -s, --silence sil  Set the silence threshold, in dB, under which the onset
      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.

      -T, --timeformat format  Set time format (samples, ms, seconds). Defaults to
      seconds.

      -m, --mix-input  Mix source signal to the output signal before writing to
      sink.

      -f, --force-overwrite  Overwrite output file if it already exists.

      -j, --jack  Use Jack input/output. You will need a Jack connection
      controller to feed aubio some signal and listen to its output.

      -N, --miditap-note  Override note value for MIDI tap. Defaults to 69.

      -V, --miditap-velop  Override velocity value for MIDI tap. Defaults to 65.

      -h, --help  Print a short help message and exit.

      -v, --verbose  Be verbose.

    ONSET METHODS

      Available methods are:

      default  Default distance, currently hfc

      Default: 'default' (currently set to hfc)

      energy  Energy based distance

      This function calculates the local energy of the input spectral frame.

      hfc  High-Frequency content

      This method computes the High Frequency Content (HFC) of the input
      spectral frame. The resulting function is efficient at detecting
      percussive onsets.

      Paul Masri. Computer modeling of Sound for Transformation and Synthesis of
      Musical Signal. PhD dissertation, University of Bristol, UK, 1996.

      complex  Complex domain onset detection function

      This function uses information both in frequency and in phase to determine
      changes in the spectral content that might correspond to musical onsets.
      It is best suited for complex signals such as polyphonic recordings.

      Christopher Duxbury, Mike E. Davies, and Mark B. Sandler.  Complex domain
      onset detection for musical signals. In Proceedings of the Digital Audio
      Effects Conference, DAFx-03, pages 90-93, London, UK, 2003.

      phase  Phase based onset detection function

      This function uses information both in frequency and in phase to determine
      changes in the spectral content that might correspond to musical onsets. It
      is best suited for complex signals such as polyphonic recordings.

      Juan-Pablo Bello, Mike P. Davies, and Mark B. Sandler.  Phase-based note
      onset detection for music signals. In Proceedings of the IEEE International
      Conference on Acoustics Speech and Signal Processing, pages 441444,
      Hong-Kong, 2003.

      specdiff  Spectral difference onset detection function

      Jonhatan Foote and Shingo Uchihashi. The beat spectrum: a new approach to
      rhythm analysis. In IEEE International Conference on Multimedia and Expo
      (ICME 2001), pages 881884, Tokyo, Japan, August 2001.

      kl  Kulback-Liebler onset detection function

      Stephen Hainsworth and Malcom Macleod. Onset detection in music audio
      signals. In Proceedings of the International Computer Music Conference
      (ICMC), Singapore, 2003.

      mkl  Modified Kulback-Liebler onset detection function

      Paul Brossier, ``Automatic annotation of musical audio for interactive
      systems'', Chapter 2, Temporal segmentation, PhD thesis, Centre for
      Digital music, Queen Mary University of London, London, UK, 2006.

      specflux  Spectral flux

      Simon Dixon, Onset Detection Revisited, in ``Proceedings of the 9th
      International Conference on Digital Audio Effects'' (DAFx-06), Montreal,
      Canada, 2006.

    SEE ALSO

      aubiopitch(1),
      aubiotrack(1),
      aubionotes(1),
      aubioquiet(1),
      aubiomfcc(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.

## `aubiopitch`

    NAME
      aubiopitch - a command line tool to extract musical pitch

    SYNOPSIS

      aubiopitch source
      aubiopitch [[-i] source] [-o sink]
                 [-r rate] [-B win] [-H hop]
                 [-p method] [-u unit] [-l thres]
                 [-T time-format]
                 [-s sil] [-f]
                 [-v] [-h] [-j]

    DESCRIPTION

      aubiopitch attempts to detect the pitch, the perceived height of a musical
      note.

      When started with an input source (-i/--input), the detected pitch are
      printed on the console, prefixed by a timestamp in seconds. If no pitch
      candidate is found, the output is 0.

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

    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.

      -o, --output sink  Save results in this file. The file will be created on
      the model of the input file. The detected frequency is played at the
      detected loudness.

      -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 2048.

      -H, --hopsize hop  The number of samples between two consecutive analysis.
      Defaults to 256.

      -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 onset
      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.

      -T, --timeformat format  Set time format (samples, ms, seconds). Defaults to
      seconds.

      -m, --mix-input  Mix source signal to the output signal before writing to
      sink.

      -f, --force-overwrite  Overwrite output file if it already exists.

      -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.

    PITCH METHODS

      Available methods are:

      default  use the default method

      Currently, the default method is set to yinfft.

      schmitt  Schmitt trigger

      This pitch extraction method implements a Schmitt trigger to estimate the
      period of a signal. It is computationally very inexpensive, but also very
      sensitive to noise.

      fcomb  a fast harmonic comb filter

      This pitch extraction method implements a fast harmonic comb filter to
      determine the fundamental frequency of a harmonic sound.

      mcomb  multiple-comb filter

      This fundamental frequency estimation algorithm implements spectral
      flattening, multi-comb filtering and peak histogramming.

      specacf  Spectral auto-correlation function

      yin  YIN algorithm

      This algorithm was developed by A. de Cheveigne and H. Kawahara and
      was first published in:

      De Cheveigné, A., Kawahara, H. (2002) "YIN, a fundamental frequency
      estimator for speech and music", J. Acoust. Soc. Am. 111, 1917-1930.

      yinfft  Yinfft algorithm

      This algorithm was derived from the YIN algorithm. In this implementation, a
      Fourier transform is used to compute a tapered square difference function,
      which allows spectral weighting. Because the difference function is tapered,
      the selection of the period is simplified.

      Paul Brossier, Automatic annotation of musical audio for interactive systems,
      Chapter 3, Pitch Analysis, PhD thesis, Centre for Digital music, Queen Mary
      University of London, London, UK, 2006.

    SEE ALSO

      aubioonset(1),
      aubiotrack(1),
      aubionotes(1),
      aubioquiet(1),
      aubiomfcc(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.

## `aubiomfcc`

    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.

## `aubiotrack`

    NAME
      aubiotrack - a command line tool to extract musical beats from audio signals

    SYNOPSIS

      aubiotrack source
      aubiotrack [[-i] source] [-o sink]
                 [-r rate] [-B win] [-H hop]
                 [-T time-format]
                 [-s sil] [-m]
                 [-j] [-N miditap-note] [-V miditap-velo]
                 [-v] [-h]

    DESCRIPTION

      aubiotrack attempts to detect beats, the time where one would intuitively be
      tapping his foot.

      When started with an input source (-i/--input), the detected beats are given
      on the console, in seconds.

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

    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.

      -o, --output sink  Save results in this file. The file will be created on the
      model of the input file. Beats are marked by a short wood-block like sound.

      -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.

      -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.

      -m, --mix-input  Mix source signal to the output signal before writing to
      sink.

      -f, --force-overwrite  Overwrite output file if it already exists.

      -j, --jack  Use Jack input/output. You will need a Jack connection
      controller to feed aubio some signal and listen to its output.

      -N, --miditap-note  Override note value for MIDI tap. Defaults to 69.

      -V, --miditap-velop  Override velocity value for MIDI tap. Defaults to 65.

      -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.

    BEAT TRACKING METHODS

      Aubio currently implements one the causal beat tracking algorithm designed by
      Matthew Davies and described in the following articles:

      Matthew E. P. Davies and Mark D. Plumbley. Causal tempo tracking of audio.
      In Proceedings of the International Symposium on Music Information Retrieval
      (ISMIR), pages 164169, Barcelona, Spain, 2004.

      Matthew E. P. Davies, Paul Brossier, and Mark D. Plumbley. Beat tracking
      towards automatic musical accompaniment. In Proceedings of the Audio
      Engineering Society 118th Convention, Barcelona, Spain, May 2005.

    SEE ALSO

      aubioonset(1),
      aubiopitch(1),
      aubionotes(1),
      aubioquiet(1),
      aubiomfcc(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.

## `aubionotes`

    NAME
      aubionotes - a command line tool to extract musical notes

    SYNOPSIS

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

    DESCRIPTION

      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.

    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.

      -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.

      -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.

    ONSET METHODS

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

      See aubioonset(1) for details about these methods.

    PITCH METHODS

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

      See aubiopitch(1) for details about these methods.

    SEE ALSO

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

## `aubioquiet`

    NAME
      aubioquiet - a command line tool to extracts quiet and loud regions from a file

    SYNOPSIS

      aubioquiet source
      aubioquiet [[-i] source]
                 [-r rate] [-B win] [-H hop]
                 [-T time-format]
                 [-s sil]
                 [-v] [-h]

    DESCRIPTION

      aubioquiet will print a timestamp each time it detects a new silent region or
      a new loud region in a sound file.

      When started with an input source (-i/--input), the detected timestamps are
      printed on the console, 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.

      -s, --silence sil  Set the silence threshold, in dB, under which the pitch
      will not be detected. Defaults to -90.0.

      -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.

    EXAMPLE OUTPUT

      NOISY: 28.775330

      QUIET: 28.914648

    SEE ALSO

      aubioonset(1),
      aubiopitch(1),
      aubiotrack(1),
      aubionotes(1),
      aubiomfcc(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, Version 3 any later version published
      by the Free Software Foundation.

## Command line features

feat vs. prg | onset | pitch | mfcc | track | notes | quiet | cut1 | short options
--- | --- | --- | --- | --- | --- | --- | --- | ---
input | Y | Y | Y | Y | Y | Y | Y | -i
output | Y | Y | N | Y | Y | N | Y!1 | -o,-m,-f
Hz/buf/hop | Y | Y | Y | Y | Y | Y!2 | Y | -r,-B-,H
jack | Y | Y | N | Y | Y | N!3 | N | -j
onset | Y | N | N | Y!8 | Y!6 | N | Y | -O,-t,-M
pitch | N | Y | N | N | Y!6 | N | N!5 | -p,-u,-l
silence | Y | Y | N | Y | Y!7 | Y | N!4 | -s
timefmt | Y | Y | Y | Y | Y | Y | ! | -T
help | Y | Y | Y | Y | Y | Y | Y | -h
verbose | Y | Y | Y | Y | Y | Y | Y | -v

1. `aubiocut --output` is used to specify a directory, not a file.
2. Option `--bufsize` is useless for `aubioquiet`
3. `aubioquiet` could have a jack output
4. Regression, re-add slicing at silences to `aubiocut`
5. `aubiocut` could cut on notes
6. `aubionotes` needs onset/pitch setters.
7. Silence was different for pitch and onset, test.
8. Some `aubiotrack` options should be disabled (minioi, threshold).