Patents by Inventor Yiou-Wen Cheng

Yiou-Wen Cheng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190324117
    Abstract: A device is operative to locate a target audio source. The device includes multiple microphones arranged in a predetermined geometry. The device also includes a circuit operative to receive multiple audio signals from each of the microphones. The circuit is operative to estimate respective directions of audio sources that generate at least two of the audio signals; identify candidate audio signals from the audio signals in the directions; match the candidate audio signals with a known audio pattern; and generate an indication of a match in response to one of the candidate audio signals matching the known audio pattern.
    Type: Application
    Filed: April 24, 2018
    Publication date: October 24, 2019
    Inventors: Che-Kuang Lin, Liang-Che Sun, Yiou-Wen Cheng
  • Patent number: 10394518
    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.
    Type: Grant
    Filed: March 5, 2017
    Date of Patent: August 27, 2019
    Assignee: MEDIATEK INC.
    Inventors: Xin-Wei Shih, Chia-Ying Li, Chao-Ling Hsu, Yiou-Wen Cheng, Shen-Kai Chang
  • Patent number: 10199029
    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.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: February 5, 2019
    Assignee: MediaTek, Inc.
    Inventors: Chao-Ling Hsu, Yiou-Wen Cheng, Chih-Ping Lin, Chieh-Cheng Cheng
  • Patent number: 10176793
    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.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: January 8, 2019
    Assignee: MEDIATEK INC.
    Inventors: Chao-Ling Hsu, Yiou-Wen Cheng
  • Patent number: 10123147
    Abstract: Methods and apparatuses pertaining to enhanced audio effect realization for virtual reality may involve receiving data in a virtual reality setting. The data may be related to audio samples from one or more sound sources, motions of the one or more sound sources, and motions of a user. Physics simulation may be performed for realization of one or more audio effects based on the received data. Signal processing may be performed using a result of the physics simulation. Audio outputs may be provided using a result of the signal processing.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: November 6, 2018
    Assignee: MEDIATEK INC.
    Inventors: Xin-Wei Shih, Yiou-Wen Cheng
  • Publication number: 20180233122
    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.
    Type: Application
    Filed: July 18, 2017
    Publication date: August 16, 2018
    Inventors: Chao-Ling Hsu, Yiou-Wen Cheng
  • Patent number: 9928851
    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.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: March 27, 2018
    Assignee: MEDIATEK INC.
    Inventors: Liang-Che Sun, Yiou-Wen Cheng, Ting-Yuan Chiu
  • Publication number: 20170372691
    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.
    Type: Application
    Filed: November 7, 2016
    Publication date: December 28, 2017
    Inventors: Chao-Ling Hsu, Yiou-Wen Cheng, Chih-Ping Lin, Chieh-Cheng Cheng
  • Publication number: 20170329431
    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.
    Type: Application
    Filed: May 10, 2016
    Publication date: November 16, 2017
    Inventors: Che-Kuang LIN, Yiou-Wen CHENG
  • Patent number: 9781531
    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.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: October 3, 2017
    Assignee: MEDIATEK INC.
    Inventors: Liang-Che Sun, Yiou-Wen Cheng
  • Patent number: 9779725
    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.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: October 3, 2017
    Assignee: MEDIATEK INC.
    Inventors: Liang-Che Sun, Chia-Hsien Lu, Yiou-Wen Cheng, Hsin-Ping Cheng
  • Patent number: 9775113
    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.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: September 26, 2017
    Assignee: MEDIATEK INC.
    Inventors: Liang-Che Sun, Yiou-Wen Cheng
  • Publication number: 20170262255
    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.
    Type: Application
    Filed: March 5, 2017
    Publication date: September 14, 2017
    Inventors: Xin-Wei Shih, Chia-Ying Li, Chao-Ling Hsu, Yiou-Wen Cheng, Shen-Kai Chang
  • Publication number: 20170264942
    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.
    Type: Application
    Filed: March 8, 2017
    Publication date: September 14, 2017
    Inventors: Chia-Ying LI, Xin-Wei SHIH, Chao-Ling HSU, Shen-Kai CHANG, Yiou-Wen CHENG
  • Patent number: 9756421
    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.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: September 5, 2017
    Assignee: MEDIATEK INC.
    Inventors: Chao-Ling Hsu, Yiou-Wen Cheng, Liang-Che Sun
  • Patent number: 9747894
    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.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: August 29, 2017
    Assignee: MEDIATEK INC.
    Inventors: Chao-Ling Hsu, Yiou-Wen Cheng, Liang-Che Sun, Yuanyuan Wang
  • Publication number: 20170215005
    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.
    Type: Application
    Filed: January 22, 2016
    Publication date: July 27, 2017
    Inventors: Chao-Ling Hsu, Yiou-Wen Cheng, Liang-Che Sun
  • Publication number: 20170195816
    Abstract: Methods and apparatuses pertaining to enhanced audio effect realization for virtual reality may involve receiving data in a virtual reality setting. The data may be related to audio samples from one or more sound sources, motions of the one or more sound sources, and motions of a user. Physics simulation may be performed for realization of one or more audio effects based on the received data. Signal processing may be performed using a result of the physics simulation. Audio outputs may be provided using a result of the signal processing.
    Type: Application
    Filed: January 18, 2017
    Publication date: July 6, 2017
    Inventors: Xin-Wei Shih, Yiou-Wen Cheng
  • Patent number: 9691381
    Abstract: An electronic device for browsing a document is disclosed. The document being browsed includes a plurality of command-associated text strings. First, a text string selector of the electronic device selects a plurality of candidate text strings from the command-associated text strings. Afterward, an acoustic string provider of the electronic device prepares a candidate acoustic string for each of the candidate text strings. Thereafter, a microphone of the electronic device receives a voice command. Next, a speech recognizer of the electronic device searches the candidate acoustic strings for a target acoustic string that matches the voice command, wherein the target acoustic string corresponds to a target text string of the candidate text strings. Finally, a document browser of the electronic device executes a command associated with the target text string.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: June 27, 2017
    Assignee: MEDIATEK INC.
    Inventors: Yiou-Wen Cheng, Liang-Che Sun, Chao-Ling Hsu, Hsi-Kang Tsao, Jyh-Horng Lin
  • Patent number: 9691382
    Abstract: A voice control device has a speech command recognizer, a sensor data processor and a decision making circuit. The speech command recognizer is arranged for performing speech command recognition to output a recognized speech command. The sensor data processor is arranged for processing sensor data generated from at least one auxiliary sensor to generate a detection output. The decision making circuit is arranged for deciding a response of the voice control device according to the recognized speech command and the detection output. The same speech command is able to trigger difference responses according to the detection output (e.g., detected motion). Besides, an adaptive training process may be employed to improve the accuracy of the sensor data processor. Hence, the voice control device may have improved performance of the voice control feature due to a reduce occurrence probability of miss errors and false alarm errors.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: June 27, 2017
    Assignee: MEDIATEK INC.
    Inventors: Chao-Ling Hsu, Yiou-Wen Cheng, Xin-Wei Shih, Jyh-Horng Lin