[LAU] Rumble noise from mic

Kevin Cosgrove kevinc at cosgroves.us
Sun Mar 8 15:31:07 EDT 2009

On 8 March 2009 at 15:27, lanas <lanas at securenet.net> wrote:

> Hi all,
>   When using the M-Audio Pulsar mic I notice a rumble sound until I
> touch the mic, in which case the rumble goes away.  That sounds like a
> 'ground' problem of some sort.  The mic is connected straight into a
> M-Audio 1010 PCI card using one of the XLRs jacks. The 1010 card also
> has M-Audio active speakers connected to it.  
>   The computer plugs into an electrical extension to which monitors and
> other devices are plugged.  That extension goes to the wall plug and is
> of the three prong type (North America).  Now, it could be that the
> house electrical outlet wiring is not right.  Would that be the
> problem ?  Is there any other way to solve this ?
>   Gating the signal would hide the rumble when there's silence but
> that's not a solution.
> Thanks for any suggestions/hints/ideas.

Do you have the option of trying a different mic in order to isolate 
where the problem might be coming from?


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