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Article #1222

Re: A background rumble appears in a sound from microphone in Sound blaster Live.

#1222
From: Bob I
Date: Wed, 24 Oct 2007 19:01
48 lines
3336 bytes

D wrote:

> On Oct 24, 5:13 pm, Bob I <bire...@yahoo.com> wrote:
> 
>>D wrote:
>>
>>>On Oct 24, 1:04 am, "Richard Crowley" <rcrow...@xp7rt.net> wrote:
>>
>>>>"D"  wrote ...
>>
>>>>>Microphones with a battery do not hum. Why?
>>
>>>>Because the battery is independent of the mains power.
>>
>>>>That confirms that the problem is coming from the mains-
>>>>derived microphone power coming through the sound card.
>>
>>>>>How to make microphones without a battery not hum?
>>
>>>>Replace the sound card with one that works properly.
>>>>(Or just continue to use the battery.)
>>
>>>Thanks Richard Crowley for your answers!
>>>I have two cards: SB Live ct4830 and SB 16 PnP. They both hum from a
>>>headset microphone.
>>>Best regards,
>>>Dima
>>
>>I suspect that it isn't the Microphone that is humming but that a HUM is
>>heard in the headphones WHEN the microphone is plugged in? If that is
>>the case then perhaps the problem is the filter capacitors on the
>>motherboard or powersupply are the problem?- Hide quoted text -
>>
>>- Show quoted text -
> 
> Thanks Bob I for your opinion!
> A HUM is heard in the headphones WHEN the microphone is plugged in and
> not muted. The hum is not heard when the microphone is muted.
> How to know which filter capacitors are the problem: on the
> motherboard or powersupply?
> Best regards,
> Dima
> 

That would be a hardware issue, the powersupply would be the easiest to 
swap out. You've proved the soundcards don't make a difference.
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Date: Wed, 24 Oct 2007 14:01:18 -0500
From: Bob I <birelan@yahoo.com>
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Subject: Re: A background rumble appears in a sound from microphone in Sound
 blaster Live.
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