Patent Number: 7,787,597

Title: Automated tools for testing echo cancellers using natural speech excitations

Abstract: There are provided methods and systems for automated testing of echo cancellers using natural speech excitations and evaluating an echo canceller by transmitting a first signal to the echo canceller, wherein the first signal includes a first speech signal and a first marker signal, and wherein the first marker signal is transmitted a first period of time after the first speech signal is transmitted; receiving a second signal from the echo canceller, wherein the second signal includes a second speech signal and a second marker signal; aligning the first speech signal and the second speech signal using the first marker signal and the second marker signal; determining a choppiness of the second speech signal, when a non-linear processor of the echo canceller is on; and determining an audible echo, when a non-linear processor of the echo canceller is off.

Inventors: Shlomot; Eyal (Long Beach, CA), Klein; Jeffrey D. (Monterey, CA), Murgia; Carlo (Aliso Viejo, CA), Benyassine; Adil (Irvine, CA)

Assignee: Mindspeed Technologies, Inc.

International Classification: H04M 1/24 (20060101)

Expiration Date: 8/31/12018