Patents by Inventor Chin Huang Yong
Chin Huang Yong 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).
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Publication number: 20230237886Abstract: A method for determining and mitigating over-excursion of an internal mass of an electromechanical transducer may include measuring a sensed signal associated with the electromechanical transducer in response to a driving signal driven to the electromechanical transducer, determining a non-linearity value based on the sensed signal, mapping the non-linearity value to a probability of over-excursion of the internal mass, and applying a gain to a signal path configured to generate the driving signal based on the probability.Type: ApplicationFiled: December 14, 2022Publication date: July 27, 2023Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Marco A. JANKO, Filippo ROSSI, Hamid SEPEHR, Kyle WILKINSON, Emmanuel A. MARCHAIS, Vadim KONRADI, Anil LAL, Aleksey S. KHENKIN, Chin Huang YONG
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Patent number: 10984778Abstract: An adaptive filter includes a frequency domain adaptation block that analyzes a statistic of coefficient movement in the frequency domain. The adaption block adjusts, in the frequency domain, a parameter (step size or leakage factor) that affects speed of convergence of the adaptive filter based on the analyzed statistic of filter coefficient movement. The filter includes an associated coefficient, statistic of coefficient movement, and parameter for each frequency bin. The coefficients may be complex numbers, and separate real and imaginary statistics and parameters are maintained. The statistic may be direction counts of the filter coefficient movement. The step size may be adjusted to a predetermined minimum value when the current direction of movement of the filter coefficient is different than the predominant direction and otherwise the step size is adjusted approximately proportionally to an amount of predominance by a value based on a direction count of the filter coefficient movement.Type: GrantFiled: July 19, 2019Date of Patent: April 20, 2021Assignee: Cirrus Logic, Inc.Inventors: Dayong Zhou, Chin Huang Yong
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Publication number: 20210020157Abstract: An adaptive filter includes a frequency domain adaptation block that analyzes a statistic of coefficient movement in the frequency domain. The adaption block adjusts, in the frequency domain, a parameter (step size or leakage factor) that affects speed of convergence of the adaptive filter based on the analyzed statistic of filter coefficient movement. The filter includes an associated coefficient, statistic of coefficient movement, and parameter for each frequency bin. The coefficients may be complex numbers, and separate real and imaginary statistics and parameters are maintained. The statistic may be direction counts of the filter coefficient movement. The step size may be adjusted to a predetermined minimum value when the current direction of movement of the filter coefficient is different than the predominant direction and otherwise the step size is adjusted approximately proportionally to an amount of predominance by a value based on a direction count of the filter coefficient movement.Type: ApplicationFiled: July 19, 2019Publication date: January 21, 2021Inventors: Dayong Zhou, Chin Huang Yong
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Patent number: 10290296Abstract: An integrated circuit may include an output for providing an output signal to a transducer including both a source audio signal for playback to a listener and an anti-noise signal for countering the effect of ambient audio sounds in an acoustic output of the transducer, an ambient microphone input for receiving an ambient microphone signal indicative of the ambient audio sounds; an error microphone input for receiving an error microphone signal indicative of the output of the transducer and the ambient audio sounds at the transducer; and a processing circuit that implements a feedback path having a feedback response that generates a feedback anti-noise signal from the error microphone signal, wherein a signal gain of the feedback path is a function of the ambient microphone signal, and wherein the anti-noise signal comprises at least the feedback anti-noise signal.Type: GrantFiled: October 28, 2016Date of Patent: May 14, 2019Assignee: Cirrus Logic, Inc.Inventors: Jon D. Hendrix, Jeffrey D. Alderson, Chin Huang Yong, Ryan A. Hellman
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Patent number: 10206032Abstract: In accordance with the present disclosure, an integrated circuit for implementing at least a portion of a personal audio device may include an output and a processing circuit. The output may provide an output signal to a transducer including both a source audio signal for playback to a listener and an anti-noise signal for countering the effect of ambient audio sounds in an acoustic output of the transducer. The processing circuit may implement an adaptive noise cancellation system that generates the anti-noise signal to reduce the presence of the ambient audio sounds heard by the listener by adapting, based on a presence of the source audio signal, a response of the adaptive noise cancellation system to minimize the ambient audio sounds at the acoustic output of the transducer, wherein the adaptive noise cancellation system is configured to adapt both in the presence and the absence of the source audio signal.Type: GrantFiled: August 8, 2013Date of Patent: February 12, 2019Assignee: Cirrus Logic, Inc.Inventors: Jeffrey D. Alderson, Jon D. Hendrix, Antonio J. Miller, Robert G. Kratsas, Jens-Peter B. Axelsson, Dayong Zhou, Yang Lu, Chin Huang Yong
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Patent number: 9812114Abstract: A method may include adaptively generating an anti-noise signal for countering the effects of ambient audio sounds at an acoustic output of the transducer by adapting a response of an adaptive filter that filters a reference microphone signal in conformity with an error microphone signal and the reference microphone signal to minimize the ambient audio sounds in the error microphone, generating a scaled anti-noise signal by applying a scaling factor to the anti-noise signal, further adjusting the response of the adaptive filter independent of a source audio signal by altering an input to the coefficient control block of the adaptive filter to compensate for the scaling factor, and combining the scaled anti-noise signal with the source audio signal to generate an audio signal provided to the transducer.Type: GrantFiled: March 2, 2016Date of Patent: November 7, 2017Assignee: Cirrus Logic, Inc.Inventors: Jeffrey D. Alderson, Jon D. Hendrix, Sang-Ik Terry Cho, Chin Huang Yong, John L. Melanson
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Publication number: 20170256248Abstract: A method may include adaptively generating an anti-noise signal for countering the effects of ambient audio sounds at an acoustic output of the transducer by adapting a response of an adaptive filter that filters a reference microphone signal in conformity with an error microphone signal and the reference microphone signal to minimize the ambient audio sounds in the error microphone, generating a scaled anti-noise signal by applying a scaling factor to the anti-noise signal, further adjusting the response of the adaptive filter independent of a source audio signal by altering an input to the coefficient control block of the adaptive filter to compensate for the scaling factor, and combining the scaled anti-noise signal with the source audio signal to generate an audio signal provided to the transducer.Type: ApplicationFiled: March 2, 2016Publication date: September 7, 2017Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Jeffrey D. Alderson, Jon D. Hendrix, Sang-Ik Terry Cho, Chin Huang Yong, John L. Melanson
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Publication number: 20170133000Abstract: An integrated circuit may include an output for providing an output signal to a transducer including both a source audio signal for playback to a listener and an anti-noise signal for countering the effect of ambient audio sounds in an acoustic output of the transducer, an ambient microphone input for receiving an ambient microphone signal indicative of the ambient audio sounds; an error microphone input for receiving an error microphone signal indicative of the output of the transducer and the ambient audio sounds at the transducer; and a processing circuit that implements a feedback path having a feedback response that generates a feedback anti-noise signal from the error microphone signal, wherein a signal gain of the feedback path is a function of the ambient microphone signal, and wherein the anti-noise signal comprises at least the feedback anti-noise signal.Type: ApplicationFiled: October 28, 2016Publication date: May 11, 2017Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Jon D. HENDRIX, Jeffrey D. ALDERSON, Chin Huang YONG, Ryan A. HELLMAN
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Patent number: 9460701Abstract: A processing circuit may comprise an adaptive filter having a response generating an anti-noise signal from a reference microphone signal, a secondary path estimate filter modeling an electro-acoustic path of a source audio signal, a biasing portion that generates a scaled anti-noise signal by applying a scaling factor and the response of the secondary path estimate filter to the anti-noise signal, and a coefficient control block that shapes the response of the adaptive filter in conformity with the reference microphone signal and a modified playback corrected error signal by adapting the response of the adaptive filter to minimize ambient audio sounds in the error microphone signal, wherein the playback corrected error is based on a difference between the error microphone signal and the source audio signal and the modified playback corrected error signal is based on a difference between the playback corrected error signal and the scaled anti-noise signal.Type: GrantFiled: July 16, 2013Date of Patent: October 4, 2016Assignee: Cirrus Logic, Inc.Inventors: Chin Huang Yong, Jeffrey D. Alderson
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Publication number: 20140314244Abstract: A processing circuit may comprise an adaptive filter having a response generating an anti-noise signal from a reference microphone signal, a secondary path estimate filter modeling an electro-acoustic path of a source audio signal, a biasing portion that generates a scaled anti-noise signal by applying a scaling factor and the response of the secondary path estimate filter to the anti-noise signal, and a coefficient control block that shapes the response of the adaptive filter in conformity with the reference microphone signal and a modified playback corrected error signal by adapting the response of the adaptive filter to minimize ambient audio sounds in the error microphone signal, wherein the playback corrected error is based on a difference between the error microphone signal and the source audio signal and the modified playback corrected error signal is based on a difference between the playback corrected error signal and the scaled anti-noise signal.Type: ApplicationFiled: July 16, 2013Publication date: October 23, 2014Inventors: Chin Huang Yong, Jeffrey D. Alderson
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Publication number: 20140307888Abstract: In accordance with the present disclosure, an integrated circuit for implementing at least a portion of a personal audio device may include an output and a processing circuit. The output may provide an output signal to a transducer including both a source audio signal for playback to a listener and an anti-noise signal for countering the effect of ambient audio sounds in an acoustic output of the transducer. The processing circuit may implement an adaptive noise cancellation system that generates the anti-noise signal to reduce the presence of the ambient audio sounds heard by the listener by adapting, based on a presence of the source audio signal, a response of the adaptive noise cancellation system to minimize the ambient audio sounds at the acoustic output of the transducer, wherein the adaptive noise cancellation system is configured to adapt both in the presence and the absence of the source audio signal.Type: ApplicationFiled: August 8, 2013Publication date: October 16, 2014Applicant: Cirrus Logic, Inc.Inventors: Jeffrey D. Alderson, Jon D. Hendrix, Antonio J. Miller, Robert G. Kratsas, Jens-Peter B. Axelsson, Dayong Zhou, Yang Lu, Chin Huang Yong