Re: [Discuss-gnuradio] Distorted playback of real-time audio on Linux

[Eric Blossom]

On Fri, Aug 13, 2010 at 09:59:20PM +0400, Elvis Dowson wrote:
> Hi Eric,
>                Before I dive into it, I just have a quick question. 

> Why is it that others are not encountering the same issue? The same
> example code was run on a Mac Pro dual quad machine belonging to
> another member of this forum, and he didn't face the issue of
> crackling and distorted audio with the audio sink.

There has been the problem with the "two clocks" since the code was
written.  The symptoms and how bad they are depend on how far the
clocks are apart, and which one's fast wrt to the other.

> Anyway, I guess from a logical stand-point if the wave file sink
> writes to the file correctly, then the data is coming in correctly,
> and its only the real-time rendering of the audio using the alsa
> audio sink that's not working correctly.

Perhaps.  You're on a VM right?  

As I mentioned above, I believe the problem is the "two clock problem".

> Still, I wonder what the difference could be, it working
> consistently for others, but not for me.

> Best regards,
> Elvis Dowson
>