The 'v' is unsigned 16-bit little-endian. It works fine for packing signed 16-bit values to little-endian, but not for unpacking them.

To recover the signed value use: 

print unpack 's', pack 'v', -32767;;
-32767

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In reply to Re: Unpacking 16bit sound by BrowserUk
in thread Win32::Sound 16 bit example by true

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