03-31-2016
sed solution is fastest, doubt you'll be able to beat it by much (virutally immeasurable).
Maybe if we understood what you're wanting to do with the middle data?
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LEARN ABOUT DEBIAN
aubiotrack
AUBIOTRACK(1) General Commands Manual AUBIOTRACK(1)
NAME
aubiotrack -- a command line tool for real time beat tracking
SYNOPSIS
aubiotrack [options] [-i soundfile]
DESCRIPTION
aubiotrack attempts to tap the beat and detect beat locations in musical sounds. When started with an input file argument (-i), aubiotrack
print the beat locations in second detected in the file.
When started without an input file argument (--input), aubiotrack creates jack input and output ports. When an input file is given, the
results are given on the console.
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 filein
Run analysis on this audio file. Most common uncompressed formats are supported.
-o --output fileout
Save results in this file. The file will be created on the model of the input file. Results are marked by a short wood-block sam-
ple.
-O --onset mode
The onset detection function to run. Available functions are complexdomain, hfc, phase, specdiff, energy, kl and mkl. By default,
both Kullback Liebler (kl) and complex domain are used in parallel.
-t --threshold value
Set the threshold value for the onset peak picking. Typical values are within 0.001 and 0.900. Default is 0.1. Lower threshold
values imply more onsets detected. Try 0.3 in case of over-detections.
-j --jack
Run in jack mode (default when started without input file) and creates a midi output.
-v --verbose
Show results on the console (default).
-h --help
Show summary of options.
BUGS
For now the program has only been tested on audio signals sampled at 44.1 kHz.
SEE ALSO
aubioonset(1) aubionotes(1) aubiocut(1) aubiopitch(1)
AUTHOR
This manual page was written by Paul Brossier (piem@altern.org). Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU General Public License, Version 2 any later version published by the Free Software Foundation.
On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.
AUBIOTRACK(1)