Cisco Technology, Inc.

Mark Milot

David Cheng-Song Qi

Timothy G Wade

Yan Wang

William Page

Ibrahim Yavuz

A testing and performance analysis methodology applies a series of test vector pairs to the input ports of an echo canceller under test. The test vector signal pair may represent a particular speech activity state transition, e.g., a Brady Model transition. A scoring compression function such as a sigmoid squashing function is used to evaluate quantized performance parameters. The sub-scores may be weighted and averaged to provide an overall performance score.

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Nashua, NH, United States of America

Mark Milot