search for: frame_len

...hich is a harder problem (but line echo should work as well)." Could you elaborate a bit on the effect of changing the frame size, other than memory usage? In the small test case I have been using, there is a 20ms delay between the speaker and microphone signals. Test-echo.c has defaults frame_len=128, filter_len=1024. I ran this case, and also frame_len=80, filter_len=320 (10 and 40ms at 8000 Hz). The second case attenuated the echo better, probably because the first filter length is much longer than the echo path delay. How low a frame length would you recommend for 8000Hz sample ra...

Hi Jim, I've just been made aware of these problems (look for the thread "speex echo cancellation limitations"). It's on my short-term TODO list. > If fftwrap.c, I ifdefed out the spx_fft_float and spx_ifft_float routines, > because there were not used and required smallft.c (which is not so small at > all) to be added to the build. Right, need to cleanup that

Hello, I recently got a problem I have never seen during my previous installations. I have a Xorcom device with 4 BRI and 8 FXS ports. I use ubuntu Linux and asterisk 1.4.22. Everything works fine but after some time zap channels disappear in asterisk. root at pbx1:~# cat /proc/zaptel/* Span 1: XBUS-00/XPD-00 "Xorcom XPD #00/00: BRI_TE" AMI/CCS NOTOPEN 1 XPP_BRI_TE/00/00/0 Clear