Apparatus and method of time delay estimation

Details Apparatus and method of time delay estimation Apparatus and method of time delay estimation

2005-09-20

2005-09-20

Harold, Jefferey F. (Department: 2644)

Telephonic communications

Echo cancellation or suppression

Using digital signal processing

C379S406080, C379S406010

Reexamination Certificate

active

06947551

ABSTRACT:
An apparatus and method for estimating a time delay between two signals are provided. An original signal and a delayed signal are provided to an average magnitude difference processor for determining an average magnitude difference for a sum of samples representing an envelope of each of the respective original and delayed signals, each for a series of sample delays. The time delay between the two signals is determined as the sample delay which minimizes the average magnitude difference.

REFERENCES:
patent: 6625279 (2003-09-01), Eom

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