in reply to Reading WAV files

You're looking for the unpack function, and more specificly, the 's' template character. (Which actualy operates on native-endian values, not specificly little-endian ones. I just noticed that there is no way to specifiy the byteorder using (un)pack for signed values.)

unpack 's*', $data; will convert all of $data into it's meaning, assuming $data contains a bunch of signed 16-bit values.

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