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.

公开(公告)号：US20170329431A1

公开(公告)日：2017-11-16

申请号：US15150553

申请日：2016-05-10

Applicant: MediaTek Inc.

Inventor： Che-Kuang LIN ,  Yiou-Wen CHENG

IPC: G06F3/043 ,  B06B3/02 ,  G06F3/041

CPC classification number: G06F3/043 ,  B06B3/02 ,  G06F3/0416 ,  G06F2203/04101

Abstract: A proximity detection method for detecting absorptive and reflective proximal objects using ultrasound signals and an associated electronic device are provided. The electronic device includes an audio codec, and an acoustics module having a microphone and a speaker. The method includes the steps of: utilizing the speaker to emit an ultrasound signal encoded by the audio codec; utilizing the microphone to sense to generate an incoming ultrasound signal associated with the emitted ultrasound signal; decoding the incoming ultrasound signal into ultrasound waves; and analyzing the ultrasound waves to detect the proximity of a proximal object.

公开(公告)号：US20160344433A1

公开(公告)日：2016-11-24

申请号：US14717115

申请日：2015-05-20

Applicant: MediaTek Inc.

Inventor： Chao-Ling HSU ,  Li-Wei CHENG ,  Chieh-Cheng CHENG ,  Yiou-Wen CHENG ,  Chih-Ping LIN

IPC: H04B1/10 ,  H04B1/12

CPC classification number: H04B1/1081 ,  G10K11/17817 ,  G10K11/17854 ,  G10K11/17873 ,  G10K2210/3028 ,  G10K2210/3035 ,  G10K2210/3055 ,  H04B1/123 ,  H04R2410/05 ,  H04R2499/13

Abstract: An active noise control system and associated auto-selection method for modeling a secondary path for the active noise control system are provided. The method includes the steps of: receiving a reference signal; filtering the reference signal with a secondary-path estimation filter to obtain a filtered reference signal, wherein the secondary path estimation filter is determined from a plurality of candidate secondary-path estimation filters; filtering the reference signal with an adaptive filter to provide a compensation signal; sensing a residual noise signal at a listening position of the active noise control system; and adapting filter coefficients of the adaptive filter according to the residual noise signal and the filtered reference signal.

Abstract translation: 提供了一种主动噪声控制系统和相关的自动选择方法，用于为主动噪声控制系统建立辅助路径。 该方法包括以下步骤：接收参考信号; 使用二次路径估计滤波器对参考信号进行滤波以获得滤波的参考信号，其中从多个候选二次路径估计滤波器确定二次路径估计滤波器; 用自适应滤波器对参考信号进行滤波以提供补偿信号; 感测在主动噪声控制系统的收听位置处的残余噪声信号; 以及根据残留噪声信号和滤波的参考信号调整自适应滤波器的滤波器系数。

公开(公告)号：US20170264942A1

公开(公告)日：2017-09-14

申请号：US15453781

申请日：2017-03-08

Applicant: MEDIATEK INC.

Inventor： Chia-Ying LI ,  Xin-Wei SHIH ,  Chao-Ling HSU ,  Shen-Kai CHANG ,  Yiou-Wen CHENG

IPC: H04N21/43 ,  H04N21/439 ,  H04N21/44 ,  H04N21/81 ,  H04N5/265 ,  G11B27/10

CPC classification number: H04N21/4307 ,  G11B27/10 ,  H04N5/265 ,  H04N21/4394 ,  H04N21/44008 ,  H04N21/44016 ,  H04N21/816

Abstract: Methods and apparatus of reconstructing 360 audio/video (AV) file from multiple AV tracks captured by multiple capture devices are disclosed. According to the present invention, for multi-track audio/video data comprising a first and second audio tracks and a first and second video tracks, the first audio track and the first video track are aligned with the second audio track and the second video track by utilizing video synchronization information derived from the first video track and the second video track if the video synchronization information is available. When the video synchronization information is available, the first audio track and the first video track are aligned with the second audio track and the second video track by utilizing the video synchronization information.

公开(公告)号：US20160260327A1

公开(公告)日：2016-09-08

申请号：US14640141

申请日：2015-03-06

Applicant: MediaTek Inc.

Inventor： Che-Kuang LIN ,  Yiou-Wen CHENG ,  Po-An CHEN ,  Chien-Hua CHEN ,  Yuan-Wen TING

IPC: G08G1/123

CPC classification number: G08G1/123 ,  G01C21/20 ,  G01S5/0027 ,  G01S5/0205 ,  G01S19/252 ,  G01S19/34 ,  G08G1/005 ,  G08G1/205 ,  H04W4/027 ,  H04W4/029 ,  H04W64/006 ,  H04W68/00

Abstract: A mobile device includes a motion detector, a processing unit, and a wireless positioning module. The motion detector is configured to detect a motion of the mobile device to obtain a motion signal. The processing unit is configured to do the followings: process the motion signal to obtain a vibration frequency and a vibration regularity of the mobile device; determine a device activity status of the mobile device according to the vibration frequency and the vibration regularity; and generate a control signal when finding that the device activity status switches from a first activity status to a second activity status. The wireless positioning module is configured to identify a first location of the mobile device in response to the control signal.

Abstract translation: 移动设备包括运动检测器，处理单元和无线定位模块。 运动检测器被配置为检测移动设备的运动以获得运动信号。 处理单元被配置为执行以下操作：处理运动信号以获得移动设备的振动频率和振动规律性; 根据振动频率和振动规律确定移动设备的设备活动状态; 并且当发现设备活动状态从第一活动状态切换到第二活动状态时，生成控制信号。 无线定位模块被配置为响应于控制信号来识别移动设备的第一位置。