I think I blew up my own alsa configuration somehow

[CJ Tres]

On 02/27/2012 07:29 PM, Ric Moore wrote:
> On 02/27/2012 06:17 PM, Rashkae wrote:

>> You're getting noise on your audio from electronic interference. I'm not
>> sure what you can do there besides install a good quality discrete audio
>> card. Still, this is a hardware problem, not a software one.
>
> That's my thinking too, and they are cheap enough nowadays. Thanks. Ric
>
>


I feel your pain Ric.
I've experienced this since... 9.04 I think.
Still there on Natty so I'd guess it's most likely electronic/hardware also.
Sounds like your noise is much worse than mine, I can attenuate it quite 
a lot by lowering the output level of the amp that the soundcard feeds. 
The problem still exists but at least it's less noticeable.
Sometimes scrolling the mouse wheel is a problem sometimes it isn't also 
the keyboard sometimes causes audible 'clicks'.

I am using a PCI audio card, a Turtle Beach Santa Cruz, rather than 
on-board audio.

I've tried a ferrite choke core - and a cheap one, on the power and 
speaker cables (together) with no noticeable effect. Not sure, maybe I 
need more than one and maybe at more than on point.

 From reading comments on different products some have had success 
stopping radio interfering with audio systems - home systems and 
computer systems to digital TV antennas and fluorescent lights -  some 
have not. Some have used one, others needed more.
They've placed them on the lines from power supplies and on sub-woofer 
cables, speaker and power. Interference came anywhere from nearby radio 
broadcast stations/towers and ham radio to a blackberry sitting on the 
desk near the computer speakers.
It seems that experimentation is necessary but they will only block 
EMI/RFI that is traveling along the cable, not if it's entering the 
system some other way.
They should work for balanced lines like XLR and RCA cables, though you 
couldn't prove it by me.

Haven't been tempted to buy more or more expensive ones yet.
It might possibly be helpful to route audio and power cables away from 
each other.


Ferrite beads:
http://computer.howstuffworks.com/question352.htm

Good luck.