Multi-input channel and multi-output channel echo cancellation

Details Multi-input channel and multi-output channel echo cancellation Multi-input channel and multi-output channel echo cancellation

2011-04-12

2011-04-12

Tsang, Fan (Department: 2614)

Telephonic communications

Echo cancellation or suppression

Using digital signal processing

C379S406050, C379S406130, C379S406140

Reexamination Certificate

active

07925007

ABSTRACT:
An echo cancellation technique that can process multi-input microphone signals with only a small increase in the overall CPU consumption compared to implementing the algorithm for a single channel microphone signal. Furthermore, the invention provides an architecture that provides for echo cancellation for multiple applications in parallel with only a small increase in CPU consumption compared to a single instance of echo cancellation with a single microphone input and multi-output channel playback.

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