debian man page for rubberband

RUBBERBAND(1)						      General Commands Manual						     RUBBERBAND(1)

NAME
       rubberband -- an audio time-stretching and pitch-shifting utility program

SYNOPSIS
       rubberband [options]  [input file]  [output file]

DESCRIPTION
       This manual page documents briefly the rubberband command.

       Rubber Band is a program that permits you to change the tempo and pitch of an audio recording independently of one another.

OPTIONS
       These  programs	follow	the  usual  GNU  command  line	syntax, with long options starting with two dashes (`-').  A summary of options is
       included below.

       You must specify at least one of the following time and pitch ratio options.

       -t, --time X
		 Stretch to X times original duration, or

       -T, --tempo X
		 Change tempo by multiple X (equivalent to --time 1/X)

       -p, --pitch X
		 Raise pitch by X semitones, or

       -f, --frequency X
		 Change frequency by multiple X

       The following option provides a simple way to adjust the sound.	See below for more details.

       -n, --crisp N
		 Crispness (N = 0,1,2,3,4,5); default 4 (see below)

       The remaining options fine-tune the processing mode and stretch algorithm.  These are mostly included for test purposes; the  default  set-
       tings and standard crispness parameter are intended to provide the best sounding set of options for most situations.

       -P, --precise
		 Aim for minimal time distortion (implied by -R)

       -R, --realtime
		 Select realtime mode (implies -P --no-threads)

       --no-threads
		 No extra threads regardless of CPU and channel count

       --threads Assume multi-CPU even if only one CPU is identified

       --no-transients
		 Disable phase resynchronisation at transients

       --bl-transients
		 Band-limit phase resync to extreme frequencies

       --no-peaklock
		 Disable phase locking to peak frequencies

       --no-softening
		 Disable large-ratio softening of phase locking

       --window-long
		 Use longer processing window (actual size may vary)

       --window-short
		 Use shorter processing window

       --thresh N F
		 Set internal freq threshold N (N = 0,1,2) to F Hz

       -d, --debug N
		 Select debug level (N = 0,1,2,3); default 0, full 3 (N.B. debug level 3 includes audible ticks in output)

       -q, --quiet
		 Suppress progress output

       -h, --help
		 Show a list of available options

       "Crispness" levels:

       0	 equivalent to --no-transients --no-peaklock --window-long

       1	 equivalent to --no-transients --no-peaklock

       2	 equivalent to --no-transients

       3	 equivalent to --bl-transients

       4	 default processing options

       5	 equivalent to --no-peaklock --window-short (may be suitable for drums)

AUTHOR
       Rubber Band was written by Chris Cannam <cannam@all-day-breakfast.com>.

       This  manual  page was written by Szekelyi Szabolcs <cc@mail.3d.hu> for the Debian system (but may be used by others), because the original
       program does not have a manual page.  Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Gen-
       eral 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.

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