On 15/05/17 21:57, Cinaed Simson wrote: > On 05/15/2017 09:50 AM, Fernando wrote: >> On 15/05/17 05:33, Cinaed Simson wrote: >>> On 05/14/2017 01:06 PM, Fernando wrote: >>>> With 8 samples/symbol there was aU and CPU at 94% (I have three AMD >>>> cores> I have reduced it to 2 s/s as suggested Cinaed, then aU >>>> dissapear and >>>> CPU is at 70%, sound is a little better but still intermittent. >>>> File is sampled at 44100 and with direct connection from wav file source >>>> to audio sink (everything else disabled) it plays fine >>> Try turning on the throttle and see what happens. >>> >>> >> it works!!!!!! >> why???? Should not be limited by the sound card? >> >> It report a warning: >>>>> Warning: This flow graph contains a throttle block and another rate >> limiting block, e.g. a hardware source or sink. This is usually >> undesired. Consider removing the throttle block. >> >> but it keeps the CPU under 40% and works fine. >> Even with samples/symbol set to 8 it has go to 95% CPU but it has worked >> some seconds until it has begun to show aUaU. >> >> >> regards >> >> >> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> > Don't know. But you can't use a re-sampler because you don't know the > rate flowing into the audio card. > > Try setting the sampling rate to 48 kHz, i.e. set the throttle rate to > 48 kHz, and then under the properties for the audio sink, use the pull > down menu and set the audio card to 44.1 kHz. And leave the sps set to 8. > > If that works, then try disabling the throttle and setting the sampling > rate of the audio card to 48 Khz - leaving the sps set to 8. > > If it doesn't work try setting the sps to 2, no throttle and audio card > set to 48 KHz. > > Use whatever works - but ideally without a throttle. >
It work both 2samples/symbol and 8s/s but only with the throtle. (with 8s/s the system is nearly overloaded, 85-90%CPU) With throtle and 2s/s system is 60-80% CPU but sound is intermittent. OK, it works although I don't know why. I'll remember trying a throtle in other situations if something strange happen regards _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio