Re: usb audio sound quality

[Patrick Shirkey <pshirkey@boosthardware.com>]

Patrick Shirkey wrote:
> I'm getting a lot of wierd sound quality bugs while using JACK. It seems 
> like the driver is storing the crappyness somewhere and each time I 
> access it the quality gets worse. Is it possible that the driver could 
> allow the data to linger and make things unstable?
> 
> I have been doing some testing today with various softsynths and my mem 
> is getting pretty full. Turning off jack just freed up 10MB but still 
> it's at
> 
> Mem:    386484K total,   336212K used,    50272K free,    41304K buffers
> 
> The machine has been up for 7 hours. Is that reasonable?
> 

I have just tested a cool machine with native alsa and the quality is 
crystal clear. Testing with JACK caused and through alsa while running 
JACK caused the degradation again. I will work on the assumption that 
means that the stress of running JACK is the culprit of audio quality 
degradation and I guess that ssm (and possibly JACK) has some mem leaks. 
Thanks for your work Takashi and Clemens.




-- 
Patrick Shirkey - Boost Hardware Ltd.
For the discerning hardware connoisseur
Http://www.boosthardware.com
Http://www.djcj.org - The Linux Audio Users guide
========================================

Being on stage with the band in front of crowds shouting, "Get off! No! 
We want normal music!", I think that was more like acting than anything 
I've ever done.

Goldie, 8 Nov, 2002
The Scotsman



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