Acoustic feedback control of microphone positioning and speaking

Details Acoustic feedback control of microphone positioning and speaking Acoustic feedback control of microphone positioning and speaking

1985-10-22

1988-10-11

Salce, Patrick R.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

381122, G10L 300

Patent

active

047776498

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.

REFERENCES:
patent: 3480912 (1969-11-01), Speeth et al.
patent: 4158750 (1979-06-01), Sakoe et al.
patent: 4357491 (1982-11-01), Daaboul et al.
patent: 4445229 (1984-04-01), Tasto et al.
patent: 4662847 (1987-05-01), Blum
patent: 4700392 (1987-10-01), Kato et al.

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