w_edit(1) - Linux man page

Name

w_edit -  Modify and/or extract samples from a SPHERE waveform file.

Synopsis

w_edit [-vf] -o [-[t|p]F:T]] [-oOUT ] { filein | - } { fileout | - }

Description

W_edit is a waveform editing command to manipulate and extract samples the waveform data in a sphere file.

If the file size has been changed by either the '-t' or '-s' option, the program adds (or modifies) three header fields to describe the origins of the data. Two "REAL" type header fields, 'start_time' and in relation to the original file. The third field, 'data_origins', is added to identify original file. The field contains a comma separated list of fields from the original file including, "database_id", "database_version" (if present), and either "conversation_id", "utterance_id", or by default 'file1' from the command line.

The following functions can be performed on a file:

-tF:T
Set the range for output from time F (seconds) to time T. If F is missing, it defaults to the beginning of the file, if T is missing, go to the end of the file.
-sF:T
Set the range for output from F samples to T samples. If F is missing, it defaults to the beginning of the file, if T is missing, go to the end of the file.
-cEXP
Extract only the samples from channels in EXP. The expression will also add channels together if the '+' is used.
-oOUT
Set the output format to the following formats:: ulaw; output the samples as ulaw encoding.; pcm_01 | short_01; output the samples as PCM values in 01 sample_byte_format; pcm_10 | short_10; output the samples as PCM values in 10 sample_byte_format; pcm | short_natural; output the samples as PCM values in the cpu's natural byte format
-v option gives verbose output.

Examples

w_edit -o short_10 -c2,1 stereo.wav reverse.wav

Convert a file the short_10 format and change the channel order of a stereo file.

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