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Posted to rec.audio.pro,rec.arts.movies.production.sound,24hoursupport.helpdesk,rec.audio.pro,microsoft.public.windowsxp.general
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A background rumble appears in a sound from microphone in Sound blaster Live.
"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.)
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