sonic(1) [debian man page]

SONIC(1)						      General Commands Manual							  SONIC(1)

NAME

       sonic - Speech speed manipulator

SYNOPSIS

       sonic [OPTION]... inFile outFile

DESCRIPTION

       Sonic  is  used	to make wav files of speech faster or slower.  The primary advance in sonic is the ability to speed speech up by much more
       than 2X, with minimal distortion.  However, sonic can be used for both speeding up and slowing down speech files.  Additionally, sonic  can
       change the pitch and volume.

OPTIONS

       -c     Modify  pitch by emulating vocal chords vibrating faster or slower.  This causes more distortion than the default pitch scaling, but
	      sounds more like the same person trying to talk higher or lower.	The default pitch changes makes the voice sound like a	larger	or
	      smaller person, but introduces little distortion.

       -p pitch
	      Set pitch scaling factor.  1.3 means 30%% higher.

       -q     Disable  all  speed-up  heuristics, possibly improving the quality slightly.  This is mainly used for debugging the speed-up heuris-
	      tics.

       -r rate
	      Adjust the speed of playback.  This sales both the pitch and speed equally.

       -s speed
	      Set speed up factor.  1.0 means no change, 2.0 means 2X faster.

       -v scaleFactor
	      Scale volume by scaleFactor.  1.5 increases by 50%.  Clips if the maximum range is exceeded.

EXAMPLES

       sonic -s 3.2 book.wav book_fast.wav

       The above command would increase the speed of an audio book called book.wav by a factor of 3.2, and write the result in book_fast.wav.

       sonic -s 0.5 -v 1.5 spanish.wav spanish_slow.wav

       This would slow down the file spanish.wav by a factor of 2, make the volume 50% louder, and write the result to spanish_slow.wav.

       sonic -p 2.0 low.wav high.wav

       This would make a low voice sound very high pitched.

AUTHOR

       Bill Cox waywardgeek@gmail.com  Sonic Version 0.1, Copyright 2010, Bill Cox, GPL license

																	  SONIC(1)

soundstretch(1) 					      General Commands Manual						   soundstretch(1)

NAME

       soundstretch - audio processing utility

SYNOPSIS

       soundstretch infile.wav outfile.wav [options]

DESCRIPTION

       SoundStretch  is  a  simple  command-line  application  that can change tempo, pitch and playback rates of WAV sound files. This program is
       intended primarily to demonstrate how the "SoundTouch" library can be used to process sound in your own program, but it can as well be used
       for processing sound files.

USAGE

       SoundStretch Usage syntax:

       "infile.wav"    Name of the input sound data file (in .WAV audio file format). Give "stdin" as filename to use standard input pipe.

       "outfile.wav"   Name of the output sound file where the resulting sound is saved (in .WAV audio file format). This parameter may be omitted
       if you don't want to save the output (e.g. when only calculating BPM rate with '-bpm' switch). Give "stdout" as filename  to  use  standard
       output pipe.

       [options]       Are one or more control options.

OPTIONS

       Available control options are:

       -tempo=n Change the sound tempo by n percents (n = -95.0 .. +5000.0 %)

       -pitch=n Change the sound pitch by n semitones (n = -60.0 .. + 60.0 semitones)

       -rate=n Change the sound playback rate by n percents (n = -95.0 .. +5000.0 %)

       -bpm=n  Detect  the  Beats-Per-Minute  (BPM)  rate  of  the sound and adjust the tempo to meet 'n' BPMs. When this switch is applied, the "
       -tempo" switch is ignored. If "=n" is omitted, i.e. switch " -bpm" is used alone, then the BPM rate is estimated and displayed,	but  tempo
       not adjusted according to the BPM value.

       -quick Use quicker tempo change algorithm. Gains speed but loses sound quality.

       -naa Don't use anti-alias filtering in sample rate transposing. Gains speed but loses sound quality.

       -license Displays the program license text (LGPL)

NOTES

       *  To  use  standard  input/output  pipes for processing, give "stdin" and "stdout" as input/output filenames correspondingly. The standard
       input/output pipes will still carry the audio data in .wav audio file format.

       * The numerical switches allow both integer (e.g. " -tempo=123") and decimal (e.g. " -tempo=123.45") numbers.

       * The " -naa" and/or " -quick" switches can be used to reduce CPU usage while compromising some sound quality

       * The BPM detection algorithm works by detecting repeating bass or drum patterns at low frequencies of <250Hz.  A  lower-than-expected  BPM
       figure may be reported for music with uneven or complex bass patterns.

EXAMPLES

       Example 1

       The following command increases tempo of the sound file "originalfile.wav" by 12.5% and stores result to file "destinationfile.wav":

	    soundstretch originalfile.wav destinationfile.wav -tempo=12.5

       Example 2

       The  following  command	decreases  the	sound  pitch  (key)  of  the  sound file "orig.wav" by two semitones and stores the result to file
       "dest.wav":

	    soundstretch orig.wav dest.wav -pitch= -2

       Example 3

       The following command processes the file "orig.wav" by decreasing the sound tempo by 25.3% and increasing the  sound  pitch  (key)  by  1.5
       semitones. Resulting .wav audio data is directed to standard output pipe:

	    soundstretch orig.wav stdout -tempo= -25.3 -pitch=1.5

       Example 4

       The  following command detects the BPM rate of the file "orig.wav" and adjusts the tempo to match 100 beats per minute. Result is stored to
       file "dest.wav":

	    soundstretch orig.wav dest.wav -bpm=100

       Example 5

       The following command reads .wav sound data from standard input pipe and estimates the BPM rate:

	    soundstretch stdin -bpm

NOTES

       Converted from the README.html that comes with SoundTouch.

																   soundstretch(1)