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An important but often forgotten principle concerning the use of listening devices for hearing TV, lecturers, speakers etc.
The clarity of sound from a source is better the closer you
are to that source. As one moves
further away so the sound is rapidly dissipated from the source in all
directions (through 360 degrees). The
further the microphone distance from the source the more interference there
will be from other noises in the room with the sound bouncing off walls back to
the microphone. This is the reason why
it is difficult to hear a speaker in a large room is one is near the back. There is plenty of sound but the clarity has
gone.
So always place the microphone as close to the sound source
as possible. This does not mean actually
on top of the speaker, but close by to avoid the distortion which is inevitable
if placed too close. It is often not
easy to know exactly where the speakers are situated on many TV sets. One has to hunt for them – possibly even get
someone with good hearing to help. The
search will be rewarded.
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