ECHO DETECTION

ECHO DETECTION

A method (400) includes receiving a microphone audio signal (132) and a playout audio signal (112), and determining a frequency representation (324) of the microphone audio signal and a frequency representation of the playout audio signal. For each frequency representation, the method also includes...

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Hauptverfasser: LOIKO, Alexandre, ZACKRISSON, Samuel, Martin, SEBASTIAN ULLBERG, Mans, Gustaf, CREUSEN, Ivo, WIREBRAND, Marcus, JOHANSSON, Daniel, BAZZICA, Alessio
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
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creator LOIKO, Alexandre
ZACKRISSON, Samuel, Martin
SEBASTIAN ULLBERG, Mans, Gustaf
CREUSEN, Ivo
WIREBRAND, Marcus
JOHANSSON, Daniel
BAZZICA, Alessio
description A method (400) includes receiving a microphone audio signal (132) and a playout audio signal (112), and determining a frequency representation (324) of the microphone audio signal and a frequency representation of the playout audio signal. For each frequency representation, the method also includes determining features (302) based on the frequency representation. Each feature corresponds to a pair of frequencies (342) of the frequency representation and a period of time between the pair of frequencies. The method also includes determining that a match (212) occurs between a first feature based on the frequency representation of the microphone audio signal and a second feature based on the frequency representation of the playout audio signal, and determining that a delay value (222) between the first feature and the second feature corresponds to an echo within the microphone audio signal.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
title ECHO DETECTION
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