Patent Document ID: 8244529
Application ID: 13236968

Base Claim:
1. A method for multi-pass echo residue detection, the method comprising: detecting audio data; determining whether the audio data is recognized as speech; categorizing the audio data recognized as speech as including an acceptable level of residual echo, categorizing unrecognizable audio data as including an unacceptable level of residual echo; determining whether the unrecognizable audio data contains a user speech input; determining whether a duration of the user speech input is at least a predetermined duration, and when the user speech input is at least the predetermined duration, extracting the predetermined duration of the user speech input from a total duration of the user speech input.

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Claim 18:
18. The method for multi-pass echo residue detection of claim 1 , further comprising: lowering an amount of echo residue from a determined source of echo residue.