-
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.
-
公开(公告)号：US11139767B2
公开(公告)日：2021-10-05
申请号：US16207340
申请日：2018-12-03
Inventor： Marco Janko , Harsha Rao , Carl Ståhl , Rong Hu
IPC: B66C1/10 , H02P25/034 , H02P21/00 , H02P21/13 , H02P21/22 , H03H17/02 , G08B6/00 , H02P21/18 , G06F3/01 , B06B1/02
Abstract: According to embodiments described herein, there are provided methods and apparatus for providing a driving signal to a transducer, wherein the driving signal is output by an amplifier. A method comprises receiving an indication of a voltage and a current of the driving signal; based on an electrical model of the transducer and the voltage and the current of the driving signal, estimating an estimated electrical response of the transducer representative of movement of a mass in the transducer; comparing the estimated electrical response to a desired electrical response; and controlling the driving signal based on the comparison.
-
公开(公告)号：US10991499B2
公开(公告)日：2021-04-27
申请号：US16113765
申请日：2018-08-27
Inventor： Vadim Konradi , Carl Lennart Ståhl , Rong Hu
Abstract: A method may include generating an electrical drive waveform associated with a target actuator by stretching or compressing a reference drive waveform associated with a reference actuator in a time domain of the reference drive waveform in accordance with a time adjustment factor, wherein the time adjustment factor is determined based on a difference between a resonant frequency of the target actuator and a resonant frequency of the reference actuator. The same or another method may include generating an electrical drive waveform associated with a target actuator by increasing or decreasing an amplitude of a reference drive waveform associated with a reference actuator in accordance with an amplitude adjustment factor, wherein the amplitude adjustment factor is determined based on a difference between a resonant frequency of the target actuator and a resonant frequency of the reference actuator.
-
4.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.
-
公开(公告)号：US20180160227A1
公开(公告)日：2018-06-07
申请号：US15792189
申请日：2017-10-24
Inventor： Jason Lawrence , Roberto Napoli , Rong Hu
CPC classification number: H04R3/007 , H04R3/002 , H04R29/001 , H04R2201/028 , H04R2499/11
Abstract: Speaker protection may be based on multiple speaker models with oversight logic that controls the speaker protection based on the multiple speaker models. At least one of the speaker models may be based on a speaker excursion determined from feedback information from the speaker, such as a current or voltage measured at the speaker. Excursion based on the speaker feedback may be used to determine an error in an excursion prediction made from the audio signal. The excursion prediction may then be compensated for that error. In some embodiments, a direct displacement estimate of excursion generated from speaker monitor signals is used to correct a fixed excursion model applied to an input audio signal.
-
Patent Agency Ranking
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.
-
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.
-
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.
-
公开(公告)号：US10341767B2
公开(公告)日：2019-07-02
申请号：US15792189
申请日：2017-10-24
Inventor： Jason Lawrence , Roberto Napoli , Rong Hu
Abstract: Speaker protection may be based on multiple speaker models with oversight logic that controls the speaker protection based on the multiple speaker models. At least one of the speaker models may be based on a speaker excursion determined from feedback information from the speaker, such as a current or voltage measured at the speaker. Excursion based on the speaker feedback may be used to determine an error in an excursion prediction made from the audio signal. The excursion prediction may then be compensated for that error. In some embodiments, a direct displacement estimate of excursion generated from speaker monitor signals is used to correct a fixed excursion model applied to an input audio signal.
-
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.
-
-
-
-
-
-
-
-
-
Search Results
21
records
(took 0.022 seconds)
