I have a Toshiba L35-S2171, and I'm trying to record with a
microphone. The volume isn't really high enough, even with every
volume control I can find set at max, and mic boost turned on.
But the big problem is that I get a loud buzz on this input when the
computer is plugged into the power mains. When I go to battery
only, the buzz goes away.
The mic I'm using works ok on my desktop, but even there I have
trouble getting enough volume. There is no buzz there.
From past experience, it seems to me that the buzz on AC is a sign
of poor design of the audio input circuit, or that the AC adapter is
really trashy. I don't know that I can do much about either of
those. However, when I plug a cable into the mic jack that's just a
male-to-male cable, no mic, then even on AC I don't get any buzz
unless I touch the plug at the other end. This would suggest a
shielding problem with the mic itself, but that wouldn't explain why
there's no buzz using it on the desktop.
If anyone has a suggestion for a fix for the buzz on AC, I would
like to hear it.
I think it would help a lot if I didn't have to turn on mic boost.
That would mean finding a mic that produces a much higher level than
the one I have, so that it would work at much lower volume settings.
Any suggestions for a particular mic like that? (This is a very low
budget situation).)
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