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公开(公告)号：US20170325024A1
公开(公告)日：2017-11-09
申请号：US15149987
申请日：2016-05-09
IPC: H04R3/00
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：US20230161413A1
公开(公告)日：2023-05-25
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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3.发明申请公开(公告)号：US20190230438A1
公开(公告)日：2019-07-25
申请号：US16255537
申请日：2019-01-23
Inventor： Ziad HATAB , Jie SU , Kaichow LAU
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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公开(公告)号：US20180321748A1
公开(公告)日：2018-11-08
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：US20220026989A1
公开(公告)日：2022-01-27
申请号：US17495277
申请日：2021-10-06
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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Patent Agency Ranking
公开(公告)号：US20200036356A1
公开(公告)日：2020-01-30
申请号：US16169723
申请日：2018-10-24
Inventor： Hezi ZHU , Roberto NAPOLI , Jie SU , Waleed ESHMAWY
Abstract: A method for compensating for a change in back electric motive force in a transducer in a device, wherein the transducer is driven by an output signal output by an amplifier, and a back volume of the transducer is formed by an enclosure within the device. The method comprises: receiving an input signal; determining, based on a characteristic of the transducer that the transducer has moved from an equilibrium position within the device; and based on the determination, adjusting a gain applied to the input signal by the amplifier to generate the output signal.
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公开(公告)号：US20190235629A1
公开(公告)日：2019-08-01
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：US20180014121A1
公开(公告)日：2018-01-11
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 , G10L21/0272 , H04R3/04 , H04R29/00
CPC classification number: H04R3/007 , G10L21/0272 , H04R3/04 , H04R29/001 , H04R2430/01
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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公开(公告)号：US20170374457A1
公开(公告)日：2017-12-28
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：US20180014120A1
公开(公告)日：2018-01-11
申请号：US15547836
申请日：2016-02-01
Inventor： Jason William LAWRENCE , Roberto NAPOLI , Roger David SERWY , Jie SU , Stefan WILLIAMS , Rong HU , Firas AZRAI
IPC: H04R3/00 , G10L21/0272 , H04R3/04 , H04R29/00
CPC classification number: H04R3/007 , G10L21/0272 , H04R3/04 , H04R29/001 , H04R2430/01
Abstract: This application describes methods and apparatus for loudspeaker protection. A loudspeaker protection system (1100) 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 . . . ωη). A first gain block (103) is configured to apply a respective frequency band gain (gt1, gt2 . . . ,gt3) to each of the audio signals in the different respective frequency bands and a gain controller (109; 1101) is provided for controlling the respective band gains. A thermal controller (1101) determines, for each of a plurality of the different respective frequency bands, a power dissipation for the loudspeaker in that frequency band and also determines a respective thermal gain setting based on the determined power dissipation for that frequency band. The gain controller is configured to control the respective frequency band gains based on the thermal gain settings.
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