Apparatus and method for time-alignment of two signals

Details Apparatus and method for time-alignment of two signals Apparatus and method for time-alignment of two signals

2006-05-09

2006-05-09

Harold, Jefferey F. (Department: 2646)

Telephonic communications

Echo cancellation or suppression

Using digital signal processing

C379S406030, C379S406010

Reexamination Certificate

active

07043014

ABSTRACT:
A recently received portion of a transmit signal is utilized, and a pitch period of the received signal is determined. Then, the determined pitch period is utilized to search for similarities in the originally transmitted signal. This searching is done over a range of delays. Once the optimal delay is determined, it is then utilized as the delay between the transmitted signal and the received signal. Once this delay is known, the received signal can be time-aligned with the delayed signal.

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The Perceptual Analysis Measurement System For Robust End-To-End Speech Quality Assessment, A.W. Rix, et al., IEEE, 2000, pp. 1515-1518.

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