ubuntu-audio-dev team mailing list archive

[Luke Yelavich <luke.yelavich@xxxxxxxxxxxxx>]

Hey folks.
I'm starting to work on merging Ubuntu and Debian packaging for pulseaudio. One of the patches Debian currently has is to use fixed point on all arm flavours they support. The argument given is that float resampling doesn't necessarily perform better than fixed point resampling, even on hard float capable hardware, and sometimes it is worse. here is the blurb taken from the patch:

Switch to use the speex fixed point resampler method by default on ARM.
Traditionately there wasn't any standard floating point hardware, so for
those machines it's an obvious choise. On machine using the hardfloat
ABI floating point still isn't an obvious win over integer performance,
it's of equal performance on some machines, but slower on others.

Has anybody performed any testing or benchmarks on the hardware we support? Should we just drop this and continue to use floating point resampler code?

Luke