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：US20150293599A1

公开(公告)日：2015-10-15

申请号：US14644407

申请日：2015-03-11

Applicant: MediaTek Inc.

Inventor： Xin-Wei SHIH ,  Chao-Ling HSU ,  Shaw-Min LEI

IPC: G06F3/01 ,  G06F3/041

CPC classification number: G06F3/017 ,  G06F3/041 ,  G06F3/04847 ,  G06F2203/04101

Abstract: A portable electronic device including an ultrasound transmitter, an ultrasound receiver, and a processing unit is provided. The ultrasound transmitter sends ultrasonic signals, while the ultrasound receiver receives reflected ultrasonic signals from an object. The ultrasound transmitter and the ultrasound receiver are disposed to form a reference axis. The processing unit processes the reflected ultrasonic signals to obtain a time-frequency distribution thereof, and determines a 1D gesture corresponding to projection loci of movements of the object on the reference axis according to the time-frequency distribution.

Abstract translation: 提供了包括超声波发射器，超声波接收器和处理单元的便携式电子设备。 超声波发射器发送超声波信号，而超声波接收器从物体接收反射的超声波信号。 超声波发射器和超声波接收器被设置成形成参考轴。 处理单元处理反射的超声波信号以获得其时间 - 频率分布，并且根据时间 - 频率分布确定与参考轴上的对象的移动的投影轨迹相对应的1D手势。