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Old 06 March 2014, 17:38   #64
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Join Date: Jan 2004
Location: Oxford
Posts: 12,047
It is my belief that the main CPU power is used for the multi-channel sample rate conversion and stereo down-mix.

At first glance the VS1063 doesn't have capabilities to accelerate these functions.

All I can gleam from the datasheet (with respect to sound output) is :

1) Digital compressed stereo in -> Decompressed -> Analog Stereo Out.
2) Digital uncompressed stereo in -> Analog stereo out.

It has a very limited digital pcm mixer which can overlay sideband mono 16-bit digital uncompressed PCM over whatever you're processing mainband. Possibly usable for SFX over music.

Last edited by alexh; 06 March 2014 at 17:45.
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