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voice file conversion

by perlthirst (Scribe)
on Dec 17, 2008 at 10:41 UTC ( #730885=perlquestion: print w/ replies, xml ) Need Help??
perlthirst has asked for the wisdom of the Perl Monks concerning the following question:

Am having one voice file which is in the format, $file filename filename:RIFF (little-endian) data, WAVE audio, ITU G.711 A-law, mono 8000 Hz Now the codec of this file is A-law, I want to convert this file into U-law, is there any perl module for this?

Comment on voice file conversion
Re: voice file conversion
by marto (Chancellor) on Dec 17, 2008 at 10:45 UTC
Re: voice file conversion
by zentara (Archbishop) on Dec 17, 2008 at 12:07 UTC
    There are some Perl programs around to do the conversions, but they usually use sox. There are alot of docs ,tutorials, and tips available for the right syntax for the conversion. For example, search groups.google.com for " sox A-law U-law" and you will find answers.

    Here is basically how you would run sox thru system.

    #!/usr/bin/perl use warnings; #converts 8bit wav files to 16bit my @files = <*.wav>; foreach my $file(@files){ my ($name) = $file =~ /(.*).wav$/; system("sox -b $name.wav -w $name.16.wav"); }

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