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Echo and Resonance Problem in Speaker Phone (Mobile Handset)

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09-20-2005, 12:42 PM

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Echo and Resonance Problem in Speaker Phone (Mobile Handset)

Hi,

I am facing some problem related to Speaker phone and microphone too.

" Make a call from or to Mobile Phone, switch the speaker ON,
During the call with the speaker you will find that there is a clear
ECHO coming with the sound from the other side,
This appears clearly when the volume of the speaker is the highest one;
it even appears when you decrease the speaker volume.
Also you will hear a WHISTLE during any speech coming out from the
speaker. "

Can someone explain me the reason behind this?

Aloha,
Sumit

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