2 aubionotes - a command line tool to extract musical notes
7 aubionotes [[-i] source]
8 [-r rate] [-B win] [-H hop]
9 [-O method] [-t thres] [-d drop]
10 [-p method] [-u unit] [-l thres]
17 aubionotes attempts to detect notes by looking for note onsets and pitches.
18 Consecutive events are segmented using onset detection, while a fundamental
19 frequency extraction algorithm determines their pitch.
21 When started with an input source (-i/--input), the detected notes are
22 printed on standard output, in seconds and midi note number.
24 When started without an input source, or with the jack option (-j/--jack),
25 aubionotes starts in jack mode.
29 This program follows the usual GNU command line syntax, with long options
30 starting with two dashes (--). A summary of options is included below.
32 -i, --input source Run analysis on this audio file. Most uncompressed and
33 compressed are supported, depending on how aubio was built.
35 -r, --samplerate rate Fetch the input source, resampled at the given
36 sampling rate. The rate should be specified in Hertz as an integer. If 0,
37 the sampling rate of the original source will be used. Defaults to 0.
39 -B, --bufsize win The size of the buffer to analyze, that is the length
40 of the window used for spectral and temporal computations. Defaults to 512.
42 -H, --hopsize hop The number of samples between two consecutive analysis.
45 -O, --onset method The onset detection method to use. See ONSET METHODS
46 below. Defaults to 'default'.
48 -t, --onset-threshold thres Set the threshold value for the onset peak
49 picking. Typical values are typically within 0.001 and 0.900. Defaults to
50 0.1. Lower threshold values imply more onsets detected. Try 0.5 in case of
51 over-detections. Defaults to 0.3.
53 -M, --minioi value Set the minimum inter-onset interval, in seconds, the
54 shortest interval between two consecutive notes. Defaults to 0.030
56 -p, --pitch method The pitch detection method to use. See PITCH METHODS
57 below. Defaults to 'default'.
59 -u, --pitch-unit unit The unit to be used to print frequencies. Possible
60 values include midi, bin, cent, and Hz. Defaults to 'Hz'.
62 -l, --pitch-tolerance thres Set the tolerance for the pitch detection
63 algorithm. Typical values range between 0.2 and 0.9. Pitch candidates found
64 with a confidence less than this threshold will not be selected. The higher
65 the threshold, the more confidence in the candidates. Defaults to unset.
67 -s, --silence sil Set the silence threshold, in dB, under which the pitch
68 will not be detected. A value of -20.0 would eliminate most onsets but the
69 loudest ones. A value of -90.0 would select all onsets. Defaults to -90.0.
71 -d, --release-drop Set the release drop threshold, in dB. If the level drops
72 more than this amount since the last note started, the note will be turned
75 -T, --timeformat format Set time format (samples, ms, seconds). Defaults to
78 -j, --jack Use Jack input/output. You will need a Jack connection
79 controller to feed aubio some signal and listen to its output.
81 -h, --help Print a short help message and exit.
83 -v, --verbose Be verbose.
87 Available methods: default, energy, hfc, complex, phase, specdiff, kl, mkl,
90 See aubioonset(1) for details about these methods.
94 Available methods: default, schmitt, fcomb, mcomb, specacf, yin, yinfft,
97 See aubiopitch(1) for details about these methods.
111 This manual page was written by Paul Brossier <piem@aubio.org>. Permission is
112 granted to copy, distribute and/or modify this document under the terms of
113 the GNU General Public License as published by the Free Software Foundation,
114 either version 3 of the License, or (at your option) any later version.