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1.发明授权公开(公告)号：US10009685B2
公开(公告)日：2018-06-26
申请号：US15453718
申请日：2017-03-08
CPC classification number: H04R3/02 , H04R3/007 , H04R3/04 , H04R29/001
Abstract: In accordance with embodiments of the present disclosure, a method may include using an adaptive filter system to estimate a response of an electrical characteristic of a loudspeaker based on an error between a first electrical parameter of the loudspeaker and a second electrical parameter of the loudspeaker and adding a non-zero delay to the first electrical parameter relative to the second electrical parameter prior to calculation of the error such that the adaptive filter system captures a truncated non-causality of the electrical characteristic.
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公开(公告)号：US09955256B2
公开(公告)日：2018-04-24
申请号：US15195674
申请日：2016-06-28
Inventor： Jie Su , John L. Melanson
CPC classification number: H04R3/007 , H04R3/04 , H04R29/001 , H04R2430/01
Abstract: In accordance with embodiments of the present disclosure, a system may include a controller configured to be coupled to an audio speaker, wherein the controller receives an output signal indicative of a physical quantity associated with the audio speaker, compares the output signal to an audio input signal to determine if differences between the output signal and the audio input signal are present indicating at least one of distortion of the output signal, non-linearities of the audio speaker, and overexcursion of the audio speaker, and controls an audio signal communicated from the controller to the audio speaker and based on the audio input signal responsive to determining that differences between the output signal and the audio input signal are present indicating at least one of distortion of the output signal, non-linearities of the audio speaker, and overexcursion of the audio speaker.
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公开(公告)号：US10782785B2
公开(公告)日：2020-09-22
申请号：US16257340
申请日：2019-01-25
Inventor： Rong Hu , Jie Su , Harsha Rao
Abstract: A method for quantifying fidelity of a haptic signal may include receiving a response signal indicative of a vibrational response of a vibrational transducer to a haptic playback waveform driven to the vibrational transducer, perceptually filtering the response signal to obtain human haptic-perceptible components of the response signal, and quantifying fidelity of the haptic playback waveform based on at least one quantitative characteristic of the human haptic-perceptible components of the response signal.
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公开(公告)号：US10732714B2
公开(公告)日：2020-08-04
申请号：US15722128
申请日：2017-10-02
Inventor： Harsha Rao , Rong Hu , Carl Lennart Ståhl , Jie Su , Vadim Konradi , Teemu Ramo , Anthony Stephen Doy
Abstract: An integrated haptic system may include a digital signal processor and an amplifier communicatively coupled to the digital signal processor and integrated with the digital signal processor into the integrated haptic system. The digital signal processor may be configured to receive a force sensor signal indicative of a force applied to a force sensor and generate a haptic playback signal responsive to the force. The amplifier may be configured to amplify the haptic playback signal and drive a vibrational actuator communicatively coupled to the amplifier with the haptic playback signal as amplified by the amplifier.
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公开(公告)号：US10356522B2
公开(公告)日：2019-07-16
申请号：US15547850
申请日：2016-02-01
Inventor： Jason William Lawrence , Roberto Napoli , Roger Serwy , Jie Su , Stefan Williams , Rong Hu , Firas Azrai
IPC: H04R3/00 , H04R29/00 , H04R3/04 , G10L21/0272
Abstract: This application describes methods and apparatus for loudspeaker protection. A loudspeaker protection system (100) is described having a first frequency band-splitter (102) for splitting an input audio signal (Vin) into a plurality of audio signals (v1, v2 . . . , vn) in different respective frequency bands (ω1, ω2 . . . , ωn). A first gain block (103) is configured to apply a respective frequency band gain (g1, g2 . . . , g3) to each of the audio signals in the different respective frequency bands and a gain controller (107, 108, 109) is provided for controlling the respective band gains. A displacement modeller (104, 105) determines a plurality of displacement signals (x1, x2 . . . , xn) based on the input audio signal (Vin) and a displacement model (104a) where each displacement signal corresponds to a modelled cone displacement for the loudspeaker for one of said different respective frequency bands. The gain controller (107, 108, 109) is configured to control the respective frequency band gains based on the plurality of displacement signals.
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Patent Agency Ranking
公开(公告)号：US10101962B2
公开(公告)日：2018-10-16
申请号：US15195192
申请日：2016-06-28
Abstract: Commands for modifying audio playback, such as to mute and unmute or pause and play audio, may be input to a mobile device by a user through interacting with the speaker in the device. The user input may be facilitated by monitoring a characteristic of the speaker and identifying signatures in the changing characteristics of the speaker that correspond with predetermined user activities. For example, a resonance frequency of the speaker may be monitored for a change resulting from a user placing a hand to cover the speaker output. When the resonance frequency change is detected, the audio playback may be muted. The speaker may continue to be monitored for a change indicating removal of the user's hand, and then audio playback may be unmuted.
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公开(公告)号：US09992571B2
公开(公告)日：2018-06-05
申请号：US15149987
申请日：2016-05-09
CPC classification number: H04R3/007 , H04R29/001
Abstract: In accordance with embodiments of the present disclosure, a controller configured to be coupled to an audio transducer, may be further configured to receive an audio input signal, calculate a displacement compensation signal in a displacement domain of the audio transducer based on the audio input signal, convert the displacement compensation signal from the displacement domain into a voltage compensation signal in a voltage domain, and apply the voltage compensation signal to the audio input signal, or a derivative thereof, to minimize overexcursion of the audio transducer.
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公开(公告)号：US20170371616A1
公开(公告)日：2017-12-28
申请号：US15195192
申请日：2016-06-28
CPC classification number: G06F3/165 , G06F3/017 , G06F3/041 , G06F3/167 , H04R29/001 , H04R2430/01 , H04R2499/11
Abstract: Commands for modifying audio playback, such as to mute and unmute or pause and play audio, may be input to a mobile device by a user through interacting with the speaker in the device. The user input may be facilitated by monitoring a characteristic of the speaker and identifying signatures in the changing characteristics of the speaker that correspond with predetermined user activities. For example, a resonance frequency of the speaker may be monitored for a change resulting from a user placing a hand to cover the speaker output. When the resonance frequency change is detected, the audio playback may be muted. The speaker may continue to be monitored for a change indicating removal of the user's hand, and then audio playback may be unmuted.
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公开(公告)号：US12032744B2
公开(公告)日：2024-07-09
申请号：US18094680
申请日：2023-01-09
Inventor： Harsha Rao , Rong Hu , Carl Lennart Ståhl , Jie Su , Vadim Konradi , Teemu Ramo , Anthony Stephen Doy
CPC classification number: G06F3/016 , G06F3/01 , G06F3/0414 , G06F3/0416 , G06F3/044
Abstract: An integrated haptic system may include a digital signal processor and an amplifier communicatively coupled to the digital signal processor and integrated with the digital signal processor into the integrated haptic system. The digital signal processor may be configured to receive a force sensor signal indicative of a force applied to a force sensor and generate a haptic playback signal responsive to the force. The amplifier may be configured to amplify the haptic playback signal and drive a vibrational actuator communicatively coupled to the amplifier with the haptic playback signal as amplified by the amplifier.
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10.发明授权公开(公告)号：US10827265B2
公开(公告)日：2020-11-03
申请号：US16255537
申请日：2019-01-23
Inventor： Ziad Hatab , Jie Su , Kaichow Lau
IPC: H04R3/04 , G10L25/21 , G10L25/18 , H04R3/00 , G10L21/0316
Abstract: A method for processing audio data for output to a transducer may include receiving an audio signal, filtering the audio signal with a fixed filter having fixed filter coefficients to generate a filtered audio signal, and outputting the filtered audio signal to the transducer. The fixed filter coefficients of the fixed filter may be tuned by using a psychoacoustic model of the transducer to determine audibility masking thresholds for a plurality of frequency sub-bands, allocating compensation coefficients to the plurality of frequency sub-bands, and fitting the fixed filter coefficients with the compensation coefficients allocated to the plurality of sub-bands.
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