[pvrusb2] audio pops and cracks in the recordings

[devsk]

I haven't tried the device in windows. Do I really have to? Do you think its a device specific problem?

do you think reducing bass (from default 0 value) will help, maybe? It sounded exactly like you described. Imagine listening to whole 2 hour Yanni live with those pops here and there, after a while I got sick of it, although the music was awesome!.

The settings were at their default when the sample was taken: cat'ed the values I changed, before taking sample, to make sure. I am not sure how to go about debugging this thing.

-devsk

----- Original Message ----
From: Mike Isely <isely at isely.net>
To: Communications nexus for pvrusb2 driver <pvrusb2 at isely.net>
Sent: Sunday, January 21, 2007 10:25:39 PM
Subject: Re: [pvrusb2] audio pops and cracks in the recordings

On Sun, 21 Jan 2007, devsk wrote:

> > Actually, it would be more useful if you just cat'ed the unchanged mpeg 
> 
> ok, I cat'ed the /dev/video0 for a while and then using only 'cat' and 'split' got this sample which is small enough for upload and download:
> 
> http://home.comcast.net/~funtoos/sample.mpg
> 
> Please have a look/listen and let me know which setting can I tune to get rid of these pops.

Very interesting.  The popping is not random; it has a pattern that 
follows the content of the audio.  In fact, the best way I would 
describe the sound is as if you were playing the audio through a speaker 
with a damaged cone.  I don't anyone else has seen/heard this sort of 
distortion.  There is an issue with corrupted video but there the 
pattern is different - it is usually only when streaming starts, and if 
it continues the pattern is periodic.  But this audio distortion is like 
something is being overdriven, in a mechanical sort of way.

If you try the device under Windows does the same thing happen?

And that sample was with all the capture parameters at their defaults, 
right?  (If you replugged the device like you said, then all the 
parameters should normally be the default values again.)

  -Mike

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