Re: Sound recorder - dictation equipment

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On Thu, 2010-05-13 at 13:24 -0500, Gregory P. Ennis wrote:
> Would you recommend a low impedance or high impedance mic?

As said, that would depend on your sound card.  But do you really have a
choice of computer microphones with different impedances?

Most sound cards are built to connect an electret microphone that
they'll provide power to (a microphone designed for plugging into a
computer).  You can't usually connect just any old microphone.  Dynamic
mikes might get destroyed, or simply have too low an output signal level
(electrets have a tiny amplifier, and they usually have a higher output
signal level).  And the normal (non-computer) electret microphones
aren't powered the way that most sound cards work.

There are some of the older cards that you can pull a jumper off and not
feed 5 volts to the mike jack, and that would let you plug an ordinary
mike in (which would probably sound a lot better than the average
computer mike).  But even some $5 computer mikes are moderately good for
voice recording.

Personally, I quite like headset microphones.  The mike is a fixed
distance from your mouth, even when you move (the mike is best beside
the mouth, rather than in front, so you speak past it, and don't pphhftt
or pop into it).  It's very close to you, so you're much louder than the
background noise.  It keeps your hands free.  And, with headphones, it's
easy to check audio levels without getting squealing feedback. Or
embarrassing yourself when everyone hears you replay back a goof at high
volume.

-- 
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