> > Rajashekhara, Sudhakar wrote: > > Troy, > > > > I tried this patch on DM644x EVM and following are my observations: > > > > 1. Playback works fine. > > 2. Record has some issues. Recorded stream has Loud volume on > > the right side, and on the left, volume is very low. > > 3. Loopback (arecord -f cd | aplay -f cd) has some issues. > > Audio is bit noisy here. I think if arecord issues are fixed, > > this may go away. > > > > On DM355, though arecord and aplay work fine independently. But > > once loopback is run, arecord records data only on one side. > > Loopback is noisy with intermittent overrun/underrun messages both > > on DM355 and DM644x EVMs. > > > > Thanks for testing... Can you post the overrun/underrun messages.
# arecord -f cd | aplay -f cd Recording WAVE 'stdin' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo Playing WAVE 'stdin' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo underrun!!! (at least 0.372 ms long) underrun!!! (at least 0.146 ms long) underrun!!! (at least 0.147 ms long) underrun!!! (at least 0.153 ms long) underrun!!! (at least 0.153 ms long) underrun!!! (at least 0.159 ms long) underrun!!! (at least 0.149 ms long) underrun!!! (at least 0.153 ms long) underrun!!! (at least 0.153 ms long) underrun!!! (at least 0.236 ms long) underrun!!! (at least 0.147 ms long) underrun!!! (at least 0.180 ms long) underrun!!! (at least 0.159 ms long) underrun!!! (at least 0.154 ms long) underrun!!! (at least 0.154 ms long) underrun!!! (at least 0.149 ms long) underrun!!! (at least 0.145 ms long) underrun!!! (at least 0.149 ms long) underrun!!! (at least 0.176 ms long) Aborted by signal Interrupt... Aborted by signal Interrupt... # After I stop it, if I re-run the same command as above, I am not getting these messages. > > Which codec does the DM355 use. Is it AIC33 like DM6446 EVM? > Yes, DM355 is using AIC33. Regards, Sudhakar _______________________________________________ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
