[vorbis-dev] vorbis on playstation 2

David Etherton etherton at rockstarsandiego.com
Thu Feb 6 09:50:31 PST 2003

> Total cycles spent in ov_read was about 953,446,828 cycles.  My test
> was 41_30secOgg-q0.ogg from the vorbis website.

The resulting output was 5,292,048 bytes.  The PS2 expects raw pcm audio at
48Khz, or 192,000 bytes per second.

(pardon the formatting here)

953,446,828 cycles          192,000 bytes
--------------------    x  ------------------  = 34,591,861 cycles / second
5,292,048 bytes                   second

Since the CPU runs at 294,912,000 cycles / second, that's about 12% of the
CPU time to decode.


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