Re: [SoX-users] Update to ALSA driver in SoX

[Chris B. <ch...@cn...>]

Chris Bagwell wrote:

> Could you retry current CVS of alsa driver?  I suspect we are having 
> buffer underruns on some systems.  Current code would discared some 
> samples during underrun which would sound like clicks.  The current 
> CVS will print a message indicating when its happen so we will know if 
> thats the issue.

OK, I've just submitted to CVS code to handle buffer underruns.  But I 
suspect there may be some sort of remaining performance issues.

Something to try if things don't sound right.  Run with the -V option 
and look for a message about your hardware not supporting the sample 
rate of the audio file.  Note the new value it is forcing the sample 
rate to be.

Next, try creating a new copy of the file at that sample rate (sox 
original.wav -r 48000 new.wav).  Then try to play the new file and see 
if it sounds better.

I think there is an issue with how long it takes to do the resample 
operation and feeding data to the hardware fast enough.  Not sure how to 
resolve that right now.

Chris