公开(公告)号：US10199029B2

公开(公告)日：2019-02-05

申请号：US15344713

申请日：2016-11-07

Applicant: MediaTek Inc.

Inventor： Chao-Ling Hsu ,  Yiou-Wen Cheng ,  Chih-Ping Lin ,  Chieh-Cheng Cheng

IPC: G10K11/16 ,  H03B29/00 ,  G10K11/178 ,  H04R1/10

Abstract: An earpiece of a headset uses a first signal and a second signal received from an in-ear microphone and an outside microphone, respectively, to enhance microphone signals. The in-ear microphone is positioned at a proximal side of the earpiece with respect to an ear canal of a user, and the outside microphone is positioned at a distal side of the earpiece with respect to the ear canal. A processing unit includes a filter, which digitally filters out in-ear noise from the first signal using the second signal as a reference to produce a de-noised signal to thereby enhance the microphone signals.

公开(公告)号：US09928851B2

公开(公告)日：2018-03-27

申请号：US14024642

申请日：2013-09-12

Applicant: MEDIATEK INC.

Inventor： Liang-Che Sun ,  Yiou-Wen Cheng ,  Ting-Yuan Chiu

IPC: G10L15/00 ,  G10L25/78 ,  G10L17/00

CPC classification number: G10L25/78 ,  G10L17/00 ,  G10L2025/786

Abstract: A voice verifying system, which comprises: a microphone, which is always turned on to output at least one input audio signal; a speech determining device, for determining if the input audio signal is valid or not according to a reference value, wherein the speech determining device passes the input audio signal if the input audio signal is valid; and a verifying module, for verifying a speech signal generated from the input audio signal and for outputting a device activating signal to activate a target device if the speech signal matches a predetermined rule; and a reference value generating device, for generating the reference value according to speech signal information from the verifying module.

公开(公告)号：US20170215005A1

公开(公告)日：2017-07-27

申请号：US15003954

申请日：2016-01-22

Applicant: MediaTek Inc.

Inventor： Chao-Ling Hsu ,  Yiou-Wen Cheng ,  Liang-Che Sun

IPC: H04R3/00 ,  G06T7/20 ,  G06F3/16

CPC classification number: H04R3/005 ,  G06F3/165 ,  G06T7/246 ,  H04R1/406 ,  H04R2201/401 ,  H04R2430/20 ,  H04R2430/25 ,  H04S2400/11 ,  H04S2400/15

Abstract: An audio refocusing method includes receiving an indication signal indicating which sound source in a recorded signal has to be refocused on; determining a direction of the sound source or a location of the sound source; and enhancing sound generated by the sound source in the recorded signal according to the direction or the location of the sound source to generate a processed signal.

公开(公告)号：US20160171975A1

公开(公告)日：2016-06-16

申请号：US14872207

申请日：2015-10-01

Applicant: MEDIATEK Inc.

Inventor： Liang-Che Sun ,  Chia-Hsien Lu ,  Yiou-Wen Cheng ,  Hsin-Ping Cheng

IPC: G10L15/08 ,  G06F9/44 ,  G06F1/32 ,  G10L15/02 ,  G10L15/20

CPC classification number: G10L15/08 ,  G06F1/3206 ,  G06F1/3287 ,  G06F9/4418 ,  G10L15/02 ,  G10L15/20 ,  G10L15/22 ,  G10L15/32 ,  G10L2015/088

Abstract: A voice wakeup detecting device for an electronic product includes a front end detecting circuit, a speech recognition processor and a main processor. The front end detecting circuit judges whether a voice signal contains a sub-keyword according to sub-keyword model parameters. If the front end detecting circuit confirms that the voice signal contains the sub-keyword, then it generates a first interrupt signal. In response to the first interrupt signal, the speech recognition processor is enabled to judge whether the voice signal contains a keyword according to keyword model parameters. If the speech recognition processor confirms that the voice signal contains the keyword, then it generates a second interrupt signal. In response to the second interrupt signal, the main processor is enabled. Consequently, the electronic produce is waked up from a sleep state to a normal working state.

Abstract translation: 用于电子产品的语音唤醒检测装置包括前端检测电路，语音识别处理器和主处理器。 前端检测电路根据子关键词模型参数判断语音信号是否包含子关键词。 如果前端检测电路确认语音信号包含子关键字，则产生第一个中断信号。 响应于第一中断信号，语音识别处理器能够根据关键词模型参数判断语音信号是否包含关键词。 如果语音识别处理器确认语音信号包含关键词，则产生第二个中断信号。 响应于第二个中断信号，主处理器被使能。 因此，电子产品从睡眠状态唤醒到正常工作状态。

公开(公告)号：US20140146972A1

公开(公告)日：2014-05-29

申请号：US13684593

申请日：2012-11-26

Applicant: MEDIATEK INC.

Inventor： Liang-Che Sun ,  Yiou-Wen Cheng

IPC: H04R29/00

CPC classification number: H04R29/006 ,  H04R1/406 ,  H04R3/005

Abstract: An embodiment of the invention provides a calibration control method performed by a microphone system. The microphone system includes a plurality of microphones configured to generate a plurality of microphone signals. First, the microphone system equalize the microphone signals to generate a plurality of equalized microphone signals. Next, the microphone system calculates a set of similarity indicators based on the equalized microphone signals. Then, the microphone system compares the set of similarity indicators with a set of predetermined thresholds to determine whether to calibrate the microphone signals.

Abstract translation: 本发明的实施例提供了一种由麦克风系统执行的校准控制方法。 麦克风系统包括被配置为产生多个麦克风信号的多个麦克风。 首先，麦克风系统均衡麦克风信号以产生多个均衡的麦克风信号。 接下来，麦克风系统基于均衡的麦克风信号来计算一组相似性指标。 然后，麦克风系统将该组相似度指示符与一组预定阈值进行比较，以确定是否校准麦克风信号。

公开(公告)号：US20250078800A1

公开(公告)日：2025-03-06

申请号：US18818610

申请日：2024-08-29

Applicant: MEDIATEK INC.

Inventor： Yun-Shao Lin ,  Tsung-Han Lee ,  Liang-Che Sun ,  Yiou-Wen Cheng

IPC: G10K11/178

Abstract: A non-coherent noise reduction method, comprising: (a) receiving a plurality of input audio sensing signals by a processor, wherein the input audio sensing signals correspond to a plurality of channels responsive to sensing by a plurality of audio sensors; (b) detecting whether non-coherent noise exists in at least one of the channels by a non-coherent noise detector; (c) estimating at least one noise power of the non-coherent noise by a noise power estimator, if the non-coherent noise exists in at least one of the channels; (d) deriving at least one noise contour of the non-coherent noise by a noise contour estimator, if the non-coherent noise exists in at least one of the channels; and (e) enhancing the input audio sensing signals according to the noise power and the noise contour if the non-coherent noise exists in at least one of the channels.

公开(公告)号：US20240313886A1

公开(公告)日：2024-09-19

申请号：US18223040

申请日：2023-07-18

Applicant: MEDIATEK INC.

Inventor： Shao-Wei Fan Jiang ,  Chao-Ling Hsu ,  Yiou-Wen Cheng

IPC: H04L1/00

CPC classification number: H04L1/0033

Abstract: A signal loss compensation method, for compensating an input signal comprising (K+Y) lost signal units and normal signal units. The signal loss compensation method comprises: compensating 1st to (K−1)th lost signal units by a first signal loss concealment algorithm to generate a first compensation signal and accordingly generating a first synthetic signal; compensating (K+X+1)th to (K+Y) th lost signal units by a second signal loss concealment algorithm to generate a second compensation signal and accordingly generating a second synthetic signal; compensating K th to (K+X)th lost signal units by the first signal loss concealment algorithm or the second signal loss concealment algorithm to generate a third synthetic signal; generating an output signal according to the first synthetic signal, the second synthetic signal, the third synthetic signal and the normal signal units. K and Y are positive integers, X is a natural number, and Y is larger than X.

公开(公告)号：US20180233122A1

公开(公告)日：2018-08-16

申请号：US15653506

申请日：2017-07-18

Applicant: MEDIATEK INC.

Inventor： Chao-Ling Hsu ,  Yiou-Wen Cheng

IPC: G10K11/178 ,  H04R3/00 ,  H04R1/10

CPC classification number: G10K11/178 ,  G10K11/17823 ,  G10K11/17854 ,  G10K11/17881 ,  G10K2210/1081 ,  G10K2210/3025 ,  H04R1/1083 ,  H04R3/002 ,  H04R3/005 ,  H04R2227/001 ,  H04R2410/05 ,  H04R2499/11

Abstract: A method for performing active noise control upon a target zone includes: using an adaptive filtering circuit to receive at least one microphone signal obtained from a microphone; and, dynamically compensating at least one coefficient of the adaptive filtering circuit to adjust a frequency response of the adaptive filtering circuit according to an energy distribution of the at least one microphone signal, so as to make the adaptive filtering circuit receive the at least one microphone signal to generate a resultant anti-noise signal to the target zone based on the dynamically adjusted frequency response.

公开(公告)号：US20170262255A1

公开(公告)日：2017-09-14

申请号：US15450005

申请日：2017-03-05

Applicant: MEDIATEK INC.

Inventor： Xin-Wei Shih ,  Chia-Ying Li ,  Chao-Ling Hsu ,  Yiou-Wen Cheng ,  Shen-Kai Chang

IPC: G06F3/16 ,  G11B20/10 ,  G11B27/10

CPC classification number: G06F3/165 ,  G11B20/10527 ,  G11B27/10 ,  G11B2020/10546 ,  H04R29/006 ,  H04S2400/15

Abstract: An audio synchronization method includes: receiving a first audio signal from a first recording device; receiving a second audio signal from a second recording device; performing a correlation operation upon the first audio signal and the second audio signal to align a first pattern of the first audio signal and the first pattern of the second audio signal; after the first patterns of the first audio signal and the second audio signal are aligned, calculating a difference between a second pattern of the first audio signal and the second pattern of the second audio signal; and obtaining a starting-time difference between the first audio signal and the second audio signal for audio synchronization according to the difference between the second pattern of the first audio signal and the second pattern of the second audio signal.

公开(公告)号：US09559736B2

公开(公告)日：2017-01-31

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 ,  G10K11/00 ,  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经滤波的参考信号，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。