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1.发明公开公开(公告)号：US20240365454A1
公开(公告)日：2024-10-31
申请号：US18139346
申请日：2023-04-25
申请人： FENG-CHOU LIN
发明人： FENG-CHOU LIN
IPC分类号： H05B47/105 , G06F3/16 , H04R3/06 , H04R19/04 , H05B45/30
CPC分类号： H05B47/105 , G06F3/165 , H04R3/06 , H04R19/04 , H05B45/30 , G08B5/36 , G08B6/00 , H04R2201/003
摘要： A system for generating situational effects of live real-time sound receiving and application method thereof, comprises: a situational effect controller provided with a plurality of control keys to control different situational effect items, and simultaneously outputs relative situational coding signals to a sound mixer device for mixing sound, then outputs a first audio signal from a live speaker, and a microphone sound receiving module of the situational effect generator can receive a first audio signal of a live environment, which is decoded and read through a situational decoding unit module and generate a corresponding first control signal and a second audio signal to trigger a situational action module to generate a relative situational action. In this way, it can be used in various parties, concerts, movie theaters, or nightclubs, etc., to capture live environmental audio.
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公开(公告)号：US20240305930A1
公开(公告)日：2024-09-12
申请号：US18661743
申请日：2024-05-13
申请人： Waves Audio Ltd.
发明人： Gabriel Zeltzer , Meir Shaashua
CPC分类号： H04R19/02 , H04R3/06 , H04R7/04 , H04R19/04 , H04R2400/01
摘要： Operating an electrostatic acoustic device simultaneously as a speaker and as a microphone. The electrostatic acoustic device includes a membrane and an electrode disposed proximate to the membrane. An input varying audio signal is input to the electrostatic acoustic device. The membrane is configured to respond mechanically to a varying electric field responsive to the varying audio signal input. A portion of the input varying audio signal is tapped to produce a reference signal. A signal is detected responsive to motion of the membrane, to convert the signal to an output varying voltage signal. The output varying voltage signal is compared to the reference signal to produce a microphone signal. The microphone signal is responsive to motion of the membrane induced by air pressure variations of ambient sound.
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公开(公告)号：US20240298119A1
公开(公告)日：2024-09-05
申请号：US18177579
申请日：2023-03-02
发明人： Andreas Wiesbauer , Jose Luis Ceballos , Fulvio Ciciotti , Benno Muehlbacher , Maria Tzitzilaki , Mohammed Farag Nouraldin Hassan
CPC分类号： H04R19/005 , H03F3/187 , H04R3/06 , H03F2200/03 , H04R2201/003
摘要： In accordance with an embodiment, a circuit includes a differential amplifier having inputs configured to be coupled to an output of a differential microelectromechanical systems (MEMS) device; a common mode coupling circuit coupled to an output of the differential amplifier; and an amplifier having an input coupled to an output of the common mode coupling circuit and an output configured to be AC coupled to a bias input node of the differential MEMS device.
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公开(公告)号：US20240187776A1
公开(公告)日：2024-06-06
申请号：US18440981
申请日：2024-02-14
申请人： Waves Audio Ltd.
发明人： Gabriel Zeltzer , Meir Shaashua
IPC分类号： H04R1/10 , G10K11/178 , H04R3/00 , H04R3/06 , H04R7/04 , H04R7/18 , H04R19/00 , H04R19/02 , H04R29/00
CPC分类号： H04R1/1041 , G10K11/17825 , G10K11/17827 , H04R1/1016 , H04R1/1025 , H04R1/1075 , H04R3/06 , H04R7/04 , H04R7/18 , H04R19/00 , H04R19/02 , H04R29/001 , G10K2210/3026 , H04R3/007 , H04R2430/01
摘要： Controlling operation of an electrostatic acoustic device including a membrane and an electrode disposed proximate to the membrane. A probe signal varying at radio frequency is injected into the electrode. A current or charge signal is detected by converting the current or charge signal to a modulated voltage signal. The current or charge signal includes an audio signal varying at audio frequencies modulating the radio frequency of the probe signal. The modulated voltage signal is demodulated to produce an audio output signal varying at audio frequency. The audio output signal is transformed to produce an error signal. A control signal is input to the electrostatic acoustic device responsive to the error signal. The control signal is configured to cancel at least in part a mechanical response of the membrane due to ambient noise.
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5.发明公开公开(公告)号：US20240083744A1
公开(公告)日：2024-03-14
申请号：US18517221
申请日：2023-11-22
CPC分类号： B81B7/008 , B81B7/02 , H04R3/06 , B81B2201/0257 , H04R2201/003 , H04R2410/03
摘要： A circuit includes a cross-talk compensation component including a power profile reconstruction component for reconstructing the power profile of a digital microphone coupled to a microelectromechanical (MEMS) device, wherein the power profile represents power consumption of the digital microphone over time between at least two operational modes of the digital microphone, and a reconstruction filter for modeling thermal and/or acoustic properties of the digital microphone; and a subtractor having a first input for receiving a signal from the digital microphone, a second input coupled to the cross-talk compensation component, and an output for providing a digital output signal.
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公开(公告)号：US20230269534A1
公开(公告)日：2023-08-24
申请号：US17675801
申请日：2022-02-18
CPC分类号： H04R3/06 , H03M1/12 , H04R3/02 , H04R19/04 , H04R2201/003
摘要： According to an embodiment, a digital microphone includes an analog-to-digital converter (ADC) for receiving an analog input signal; a DC blocker component coupled to the ADC; a digital low pass filter coupled to the DC block component; and a nonlinear compensation component coupled to the digital low pass filter for providing a digital output signal.
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公开(公告)号：US11350222B2
公开(公告)日：2022-05-31
申请号：US16902875
申请日：2020-06-16
发明人： Marco Veneri , Alessandro Morcelli
摘要： Described herein is a MEMS acoustic transducer device provided with a micromechanical detection structure that detects acoustic-pressure waves and supplies a transduced electrical quantity, and with an integrated circuit operatively coupled to the micromechanical detection structure and having a reading module that generates at output an audio signal as a function of the transduced electrical quantity. The integrated circuit is further provided with a recognition module, which recognizes a of sound activity event associated to the transduced electrical quantity. The MEMS acoustic transducer has an output that supplies at output a data signal that carries information regarding recognition of the sound activity event.
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公开(公告)号：US20220007110A1
公开(公告)日：2022-01-06
申请号：US17365402
申请日：2021-07-01
发明人： Xueli FAN , Xiangru BI
摘要： A method and system for compensating a frequency response of a microphone array are provided. The method includes: multiple microphones in a microphone array respectively receiving a compensation signal sent from a calibration speaker and outputting multiple output signals respectively; determining a uniform frequency response of the multiple microphones based on the multiple output signals; calculating a compensation gain for each of the multiple microphones according to the uniform frequency response; and storing the calculated compensation gain of each microphone.
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公开(公告)号：US10812905B2
公开(公告)日：2020-10-20
申请号：US16509997
申请日：2019-07-12
申请人： USound GmbH
摘要： A device and a method for audio signal processing for a piezoelectric speaker for generating sound waves in the audible wavelength spectrum includes a signal input for a digital audio signal, a digital correction unit for correcting a nonlinearity of the speaker, a digital PWM generator that converts the signal corrected by the correction unit into a pulse-width modulated switch signal, a power stage controllable by the switch signal such that the speaker can be charged with a voltage for deflecting a membrane, and a closed-loop control circuit that feeds the voltage back as a feedback signal, which includes a first signal noise in the audible frequency range. The closed-loop control circuit of the device includes a noise shaping unit in that shifts a noise energy of the first signal noise outside of the audible frequency range.
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公开(公告)号：US10728659B2
公开(公告)日：2020-07-28
申请号：US16097991
申请日：2017-05-02
申请人： Purifi APS
发明人： Bruno Putzeys , Lars Risbo
摘要： The present invention relates in one aspect to a method of controlling or limiting diaphragm excursion of a loudspeaker. The method comprising steps of receiving a first audio signal and deriving an excursion signal representing diaphragm excursion of the electrodynamic loudspeaker from the first audio signal. The method additionally comprises deriving an excursion envelope from the excursion signal and applying a second audio signal, derived from the first audio signal, to an input of an adjustable low-frequency suppressor. The second audio signal is filtered by the adjustable low-frequency suppressor to selectively attenuate low-frequency components based on the excursion envelope to produce a processed audio signal with reduced low-frequency content.
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