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Tech Tip of the Day:
Get your
mic positioning in order
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Microphone positioning and technique
is largely a matter or personal tastes - usually whatever
"sounds right" probably is right. Nevertheless it's
a good idea to remind ourselves of some of the basics for
getting there.
The following are a few tips from our friends at Shure that
you might consider following when micing musical instruments
for sound reinforcement.
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• Try first to get the instrument to sound good acoustically
before miking it.
• Use a mic with a frequency response that
is limited to the frequency range of the instrument.
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To determine a good starting mic position, try closing one ear with
your finger. Listen to the sound source with the other ear and move
around until you find a spot that sounds good - put the mic there.
However, this may not be practical (or healthy) for extremely close
placement near loud sources.
• Remember that the closer
a mic is to a sound source, the louder the source is compared to
reverberation or ambient noise.
• Place the mic only
as close as necessary, keeping in mind Proximity Effect.
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When possible, use as few microphones as possible due to the Potential
Acoustic Gain rule which tells us (among other things) that the
volume level of a system must be turned down for every mic added
in order to prevent feedback.
• If the sound from your
loudspeakers is distorted even though you did not exceed a normal
mixer level, the mic signal may be overloading your mixer's input.
To correct this situation, use an in-line attenuator or pad to reduce
the signal level from the microphone, or just back it away from
the source some.
• More than anything, experiment and
listen!
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