[Asterisk-Dev] notch / high pass filter addition to zaptel

[Steve Underwood]

Andrew Kohlsmith wrote:

>On Tuesday 28 June 2005 14:59, Kelly McDonald wrote:
>  
>
>>The only issue I have left is a ~60hz hum that seems to be coming from
>>the card itself (bad ps bypassing is my guess)
>>    
>>
>
>If you've got 60Hz anywhere in your PC replace that power supply.  I don't 
>think I've ever run across 60Hz hum in any kind of modern switchmode power 
>supply.  It just doesn't happen.
>  
>
It might not be a power supply issue. He might have a grounding problem 
(i.e. he might have something grounded that shouldn't be). However, a 
notch filter is definitely not what he needs.

Regards,
Steve