Acoustic feedback control of microphone positioning and speaking volume
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United States of America Patent
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Oct 11, 1988
Grant Date -
N/A
app pub date -
Oct 22, 1985
filing date -
Oct 22, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention is directed to an apparatus and method which provide repeatable control of speech input to a microphone via audio feedback to a user. In this manner, repeatable and simultaneous control of microphone positioning and speaking volume is obtained. In a first embodiment, a microphone in the mouthpiece of the handset is used to detect sounds emanating from the mouth and audio feedback is provided through a speaker in the handset earpiece to ensure the microphone is positioned correctly for the application. In alternate embodiments, feedback is provided based upon voiced and unvoiced amplitudes of the input speech to obtain more optimal results.
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