[speex-dev] XScale realtime encoding possible?
mal at komcept.com
Thu Nov 6 07:29:05 PST 2003
I've got a 400MHz XScale-PXA255 board, and I want to stream voice from
it over a network connection at 28.8baud. This calls for a capable
voice encoder which can encode at about 24kbps. I was damn happy when I
found Speex and said goodbye to MP3 :)
However, i'm still a long way from realtime encoding using speexenc, is
Using the fixed point math option in 1.1.1 (the XScale has no floating
point unit), and compiling with CFLAGS="-O3 -funroll-loops -ffast-math",
I get the following:
time speexenc -u --quality 0 --abr 28 --comp 1 test.wav test.spx
Warning: Speex is only optimized for 8, 16 and 32 kHz. It will still
work at 44100 Hz but your mileage may vary
Encoding 44100 Hz audio using ultra-wideband (sub-band CELP) mode (mono)
<p>The input file is 44.1KHz, 32bit mono, but I would be perfectly happy to
use 32KHz, 16bit, if that would make any impact on speed?
Any help would be much appreciated.
--- >8 ----
List archives: http://www.xiph.org/archives/
Ogg project homepage: http://www.xiph.org/ogg/
To unsubscribe from this list, send a message to 'speex-dev-request at xiph.org'
containing only the word 'unsubscribe' in the body. No subject is needed.
Unsubscribe messages sent to the list will be ignored/filtered.
More information about the Speex-dev