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View Full Version : Raw audio streams (was: New poll for slimp3-users)



Jason Holtzapple
2003-11-12, 13:53
flac is heavily optimized for decoding. Here's an hour of relatively
hard
to encode music (noisy electronic) on my 800 Mhz Via C3:

encode:
768.03s real 636.50s user 18.95s system
decode:
264.07s real 216.46s user 18.03s system

Also, flac decoding generally uses less cpu than mpg123 decoding:
here's a sample track (mp3=alt-preset standard VBR)
flac:
8.69s real 8.05s user 0.33s system
mpg123:
9.74s real 9.27s user 0.07s system

So flac is really quite suitable for on the fly decoding and streaming
on modern CPUs.

--Jason

--- Ron Thigpen <rthigpen (AT) nc (DOT) rr.com> wrote:
> Does anyone have an estimate of how much CPU would be consumed for
> realtime compression of one CD quality stream to FLAC? For units,
> I'm
> think of rough percentages of a standard CPU, ex: 20% of an
> AthlonXP2400. Granted, this will vary based on system config. Just
> thinking in rough terms here to get into the ballpark.


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