ECHO DETECTION

A computer-implemented echo detection method is provided. When the echo detection method executed by data processing hardware (610), data processing hardware is made (610) to: receive a frequency representation (324) of a playback audio signal (112) corresponding to a microphone audio signal (132);...

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Bibliographische Detailangaben
Hauptverfasser:	SEBASTIAN ULLBERG MANS GUSTAF, CREUSEN IVO, ZACKRISSON SAMUEL MARTIN, BAZZICA ALESSIO, JOHANSSON DANIEL, WIREBRAND MARCUS, LOIKO ALEXANDRE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACOUSTICS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY MUSICAL INSTRUMENTS PHYSICS SPEECH ANALYSIS OR SYNTHESIS SPEECH OR AUDIO CODING OR DECODING SPEECH OR VOICE PROCESSING SPEECH RECOGNITION TELEPHONIC COMMUNICATION
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Beschreibung
Zusammenfassung:	A computer-implemented echo detection method is provided. When the echo detection method executed by data processing hardware (610), data processing hardware is made (610) to: receive a frequency representation (324) of a playback audio signal (112) corresponding to a microphone audio signal (132); determine features (302) based on the frequency representations (324) of the playback audio signal (112), each feature (302) corresponding to frequency pairs (342) of the frequency representations (324) and a time period between the frequency pairs (342); determine that a match (212) occurs between a first feature (302) based on the frequency representation (324) of the microphone audio signal (132) and a second feature (302) based on the frequency representation (324) of the playback audio signal (112); and determine that there is an echo within the microphone audio signal (132) when a delay value (222) between the first feature (302) and the second feature (302) satisfies an echo threshold (224), the echo thresho