Audio PCM manipulation library for Linux
From: Deathstar (deathstar_at_altern.org)
Date: 08/28/03
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Date: 28 Aug 2003 08:02:33 -0700
Hi,
I'm working on an embedded ARM board running Linux 2.4.18. The
processor is a Hynix 7201 based on ARM720T core, running at 60MHz (25
BogoMIPS), with a Piccolo DSP.
I want to change the audio volume by software, however the board
doesnt have any hardware mixer for audio. So changing the volume via
OSS etc. is not possible.
Since I require only to playback WAV PCM files, i figure that instead
of using a hardware mixer, i can amplify the signals inside the file
as required, to get the required volume.
Can someone please point me to libraries that allow amplifications of
signals stored in a PCM file? Please remember it has to be cross
platform to run on the ARM, and fast since the processor isnt quite
the heavy-duty kind.
TIA,
Deathstar
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