Acoustic feedback cancelling electro-acoustic transducer network

Details Acoustic feedback cancelling electro-acoustic transducer network Acoustic feedback cancelling electro-acoustic transducer network

1982-03-03

1984-11-27

George, Keith E.

Electrical audio signal processing systems and devices

Hearing aids, electrical

Specified casing or housing

381 93, H04M 120, H04R 302

Patent

active

044852720

ABSTRACT:
An electroacoustic transducer apparatus which prevents oscillations as a result of acoustic coupling between an acoustic-wave transmitter and a receiver. The transmitter and receiver each comprise an electro-acoustic transducer network. The transducers in each network are arranged so that the phase and amplitude of the signals applied to the transmitter transducers and the signals supplied to an adder circuit by the receiver network transducers (25) to (30) of the receiver network are such that in the oscillation frequency band the radiation pattern of the transmitter network and the directivity pattern of the receiver network are zero in at least one direction. The two networks are arranged relative to each other so that the directions of minimum radiation and directivity correspond to the directions of maximum coupling between the transducers of the two networks.

REFERENCES:
patent: 2177769 (1939-10-01), Erickson
patent: 3922488 (1975-11-01), Gabr
patent: 3992586 (1976-11-01), Saffe
patent: 4237339 (1980-12-01), Bunting et al.
patent: 4311874 (1982-01-01), Wallace, Jr.
Telsis, Feb. 1977, pp. 16-21, "Audio Teleconferencing-The Telephone and the Environment", by Radamis Botros.
Rec. Electr..noteq.Commun. Eng. Conversazionne, Tohoku Univ. (Japan) vol. 48, No. 2, May 1979, pp. 55-60; "An Application of a Linear Array of Microphones to a Sound Reinforcement System", by Kim et al.

Affiliated with

Also associated with

Rating

Acoustic feedback cancelling electro-acoustic transducer network does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Acoustic feedback cancelling electro-acoustic transducer network, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acoustic feedback cancelling electro-acoustic transducer network will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2135746