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

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Article #1220

#1220

From: D
Date: Thu, 25 Oct 2007 05:15

53 lines
4067 bytes

On Oct 24, 11:01 pm, Bob I <bire...@yahoo.com> wrote:
> 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.- Hide quoted text -
>
> - Show quoted text -
Thanks Bob I for your suggestion!
Could a mainboard BIOS setting be the problem? The same hum was with
an old power supply. The hum increases if I increase the microphone
volume.
Best regards,
Dima

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From:  D <tarb@bk.ru>
Newsgroups: rec.audio.pro,rec.arts.movies.production.sound,24hoursupport.helpdesk,microsoft.public.windowsxp.general
Subject: Re: A background rumble appears in a sound from microphone in Sound blaster Live.
Date: Wed, 24 Oct 2007 22:15:39 -0700
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