Method and apparatus for canceling echo in a telephone...

Details Method and apparatus for canceling echo in a telephone... Method and apparatus for canceling echo in a telephone...

2005-11-08

2005-11-08

Harold, Jefferey F. (Department: 2644)

Telephonic communications

Echo cancellation or suppression

Using digital signal processing

C379S406060, C379S406010

Reexamination Certificate

active

06963643

ABSTRACT:
An algorithm that includes delay elements is used for echo cancellation. The delays allow burst processing of consecutive samples of transmitting and receiving signals in a telephone communication system. As a result, there is tremendous reduction of memory bandwidth when compared to conventional sample-by-sample processing of signals. This algorithm can be advantageously implemented in FPGAs. Echo in over a thousand channels can be cancelled using a FPGA and an external memory device.

REFERENCES:
patent: 5414766 (1995-05-01), Cannalire et al.
patent: 44 18 792 (1995-11-01), None
patent: 0 272 714 (1988-06-01), None

Affiliated with

Also associated with

Rating

Method and apparatus for canceling echo in a telephone... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for canceling echo in a telephone..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for canceling echo in a telephone... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3486044