公开(公告)号：US20230386451A1

公开(公告)日：2023-11-30

申请号：US17825250

申请日：2022-05-26

Applicant: MEDIATEK INC.

Inventor： Liang-Che SUN ,  Yiou-Wen CHENG

IPC: G10L15/08 ,  H04R3/04 ,  H03M1/12

CPC classification number: G10L15/08 ,  H04R3/04 ,  H03M1/123 ,  G10L2015/088 ,  H04R2430/01

Abstract: Voice wakeup detecting devices and methods are provided. A microphone is configured to receive an audio input signal. The audio input signal includes a voice signal and an ambient voice signal. A first analog-to-digital converter is configured to convert the audio input signal into a first signal according to a first gain. A second analog-to-digital converter is configured to convert the audio input signal into a second signal according to a second gain. A control module is configured to merge the first signal multiplied by first weight and the second signal multiplied by second weight into a third signal and to adjust the first weight and the second weight in response to a volume value. The second gain is less than the first gain, and the first weight is different than the second weight.

公开(公告)号：US20230133061A1

公开(公告)日：2023-05-04

申请号：US17515909

申请日：2021-11-01

Applicant: MEDIATEK INC.

Inventor： Shaw-Min LEI ,  Yiou-Wen CHENG ,  Liang-Che SUN

IPC: H04M9/08 ,  G10K11/178

Abstract: An audio device is provided. The audio device includes processing circuitry which is connected to a loudspeaker and a microphone. The processing circuitry is configured to play an echo reference signal from a far end on the loudspeaker, and perform an acoustic echo cancellation (AEC) process using the echo reference signal and an acoustic signal received by the microphone using an AEC adaptive filter. The processing circuitry repeatedly determines a first status of the loudspeaker according to a relation between the played echo reference signal and the received acoustic signal, and transmits a first status signal indicating the first status of the loudspeaker to the far end through a cloud network.