公开(公告)号：US12120492B2

公开(公告)日：2024-10-15

申请号：US17876388

申请日：2022-07-28

Applicant: MediaTek Inc.

Inventor： Chi Sheng Wu ,  Liang-Che Sun ,  Yiou-Wen Cheng ,  Shun-Chang Zhong

IPC: H04R3/00 ,  H04R3/04 ,  H04R5/04 ,  H04S7/00

CPC classification number: H04R3/04 ,  H04R3/005 ,  H04R5/04 ,  H04S7/307 ,  H04R2410/07

Abstract: Various techniques pertaining to non-coherent noise reduction for audio enhancement on a multi-microphone mobile device are proposed. A processor receives a plurality of signals from a plurality of audio sensors corresponding to a plurality of channels responsive to sensing by the plurality of audio sensors. The processor then performs a non-coherent noise reduction on one or more signals of the plurality of signals to suppress one or more non-coherent noises in each of the one or more signals based on a respective signal-to-noise ratio (SNR) associated with each of the one or more signals. The processor further combines the plurality of signals subsequent the noise reduction to generate an output signal.

公开(公告)号：US09781531B2

公开(公告)日：2017-10-03

申请号：US13684593

申请日：2012-11-26

Applicant: MEDIATEK INC.

Inventor： Liang-Che Sun ,  Yiou-Wen Cheng

IPC: H04R29/00 ,  H04R1/40 ,  H04R3/00

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.

公开(公告)号：US09775113B2

公开(公告)日：2017-09-26

申请号：US14959037

申请日：2015-12-04

Applicant: MEDIATEK Inc.

Inventor： Liang-Che Sun ,  Yiou-Wen Cheng

IPC: G10L15/22 ,  H04W52/02 ,  G10L15/08 ,  G10L15/28

CPC classification number: H04W52/0251 ,  G10L15/22 ,  G10L15/28 ,  G10L2015/088 ,  Y02D70/00

Abstract: A voice wakeup detecting device for an electronic product includes a digital microphone and an application processor. The digital microphone has a function of judging whether a digital voice signal contains a subword according to subword model parameters. If the digital microphone confirms that the digital voice signal contains the subword, the digital microphone generates a first interrupt signal and outputs the digital voice signal. The application processor is enabled in response to the first interrupt signal. The application processor judges whether the digital voice signal contains a keyword according to keyword model parameters. If the application processor confirms that the digital voice signal contains the keyword, the electronic product is waked up from a sleep state to a normal working state under control of the application processor.

公开(公告)号：US20170270782A1

公开(公告)日：2017-09-21

申请号：US15071196

申请日：2016-03-15

Applicant: MEDIATEK INC.

Inventor： Tien-Ju Yang ,  Liang-Che Sun ,  Yu-Hao Huang ,  Chih-Kai Chang ,  Chun-Chia Chen ,  Tsung-Te Wang

IPC: G08G1/005 ,  G08B7/06

CPC classification number: G08G1/005 ,  H04M1/72538 ,  H04M2250/10 ,  H04M2250/12 ,  H04M2250/52

Abstract: Disclosed is an event detecting method, which is applied to an electronic system with at least one event detecting module. The event detecting method comprises: (a) enabling at least one event detecting module; and (b) applying the event detecting module enabled in the step (a) to detect if any predetermined event occurs in a detecting range of the event detecting module.

公开(公告)号：US09756421B2

公开(公告)日：2017-09-05

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 ,  G06F3/16 ,  G06T7/20

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：US09747894B2

公开(公告)日：2017-08-29

申请号：US14166881

申请日：2014-01-29

Applicant: MEDIATEK Inc.

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

IPC: G10L15/08 ,  G10L15/22

CPC classification number: G10L15/08 ,  G10L15/22 ,  G10L2015/228

Abstract: The invention provides a system for speech keyword detection and associated method. The system includes a speech keyword detector, an activity predictor and a decision maker. The activity predictor obtains sensor data provided by a plurality of sensors, and processes the sensor data to provide an activity prediction result indicating a probability for whether a user is about to give voice keyword. The decision maker processes the activity prediction result and a preliminary keyword detection result of the speech keyword detection to provide a keyword detection result.