Computer controlled speakerphone for adapting to a communication

Details Computer controlled speakerphone for adapting to a communication Computer controlled speakerphone for adapting to a communication

1988-12-28

1990-02-13

Schreyer, Stafford D.

Telephonic communications

Supervisory or control line signaling

Using line or loop condition detection

379390, H04B 320, H04M 160

Patent

active

049013467

ABSTRACT:
A computer controlled speakerphone includes a line adapting arrangement for developing information about an interface between the speakerphone and a hybrid in a communication line and for providing optimal performance during operation by adapting operating parameters of the speakerphone to the line. During a conversation, the line adapting arrangement measures and averages the degree of hybrid reflection that is presented to the speakerphone. This hybrid reflection provides a measure of both the hybrid and a far-end acoustic return. By determining the degree of hybrid reflection, the switching threshold level of the speakerphone for switching between the transmit state and the receive state may be adjusted. Once the expected level of receive speech due to hybrid reflection is known, additional receive speech due to the far-end talker may be accurately determined and the state of the speakerphone switched accordingly. The amount of switched loss required in the transmit and receive speech paths of the speakerphone to maintain stability may also be adjusted by the line adapting arrangement in accordance with the degree of hybrid reflection. By lowering the amount of switched loss, speakerphone switching operation becomes more transparent and can even approach full-duplex for fully digital connections.

REFERENCES:
patent: 4608462 (1986-08-01), Blomley et al.

Affiliated with

Also associated with

Rating

Computer controlled speakerphone for adapting to a communication does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Computer controlled speakerphone for adapting to a communication, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Computer controlled speakerphone for adapting to a communication will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1174657