Echo canceller using an adaptive finite impulse response filter

Details Echo canceller using an adaptive finite impulse response filter Echo canceller using an adaptive finite impulse response filter

1985-06-27

1989-02-07

Harkcom, Gary V.

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379411, G06F 1531

Patent

active

048036480

ABSTRACT:
An echo canceller, using an Adaptive Finite Input Response Filter (AFIR), uses a processing device with a plurality of interconnected cells. These cells, connected in a systolic arrangement, determines the function of three variables m, n, and p, in the equation p+m n, where m and n are data inputs to each of the cells, and p is the output of a previous calculation cell. This is achieved by using a timing sequence, in which the variable m is applied bit serial to the cells over a period of q time slots, and the variable n is applied in parallel over the cells in one time slot.

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