公开(公告)号：US10586534B1

公开(公告)日：2020-03-10

申请号：US15717503

申请日：2017-09-27

Applicant: Amazon Technologies, Inc.

Inventor： Paraskevas Argyropoulos ,  Carlo Murgia ,  Ramya Gopalan

IPC: G10L21/02 ,  G10L15/20 ,  G10L15/22 ,  G10L25/84 ,  G10L21/0232 ,  G10L15/30 ,  G10L15/08 ,  G10L21/0208

Abstract: Devices and techniques are generally described for control of a voice-controlled device using acoustic echo cancellation statistics. A reference signal representing the audio stream may be sent to an acoustic echo cancellation (AEC) unit. A microphone may receive an input audio signal and send the input audio signal to the AEC unit. The AEC unit may attenuate at least a part of the input audio signal. AEC statistics related to the attenuation of at least the part of the input audio signal may be determined over a first period of time. A wake-word in the input audio signal may be detected during the first period of time. A determination may be made that the wake-word is part of the playback of the audio stream based at least in part on the AEC statistics.