jargon
"Don Pearce" wrote in message
...
On Fri, 18 Nov 2011 13:51:37 -0800 (PST), RichD
wrote:
What's the difference between reverb, echo, and feedback?
Echo is a single reflection of a sound - the kind you hear when you
shout "Hello" near a cliff.
Multiple reflections are also common in such instances.
Feedback is a situation you only get when you have an amplifier and a
speaker. The sound arriving from the speaker is a little louder than
the one that originally hit the microphone, so that comes out of the
speaker a little louder still. This loop will build until the system
howls.
That would be *acoustic feedback* only, There are MANY other types of
course.
You cure it by turning down the amplifier so the sound from the
speaker is always a little softer than the original when it hits the
microphone.
Or any other method that reduces the loop gain at the feedback frequency,
notch filtering being a common example.
Trevor.
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