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公开(公告)号：US20240356786A1
公开(公告)日：2024-10-24
申请号：US18640492
申请日：2024-04-19
发明人： Johannes G. Ransijn
CPC分类号： H04L25/03057 , H02M3/07 , H03F3/45475 , H03G5/165 , H04L25/4917
摘要： An apparatus comprises a discrete-time linear equalizer circuit. The discrete-time linear equalizer circuit includes a sample and hold circuitry including multiple switched-capacitor circuits. The multiple switched-capacitor circuits include at least a switched-capacitor circuit of a pre-cursor tap, a switched-capacitor circuit of a cursor tap, and a switched-capacitor circuit of a post-cursor tap. A clock-driven switch circuitry is to switchably couple a capacitor of the switched-capacitor circuit of the pre-cursor tap to a negative signal input over a first time period, a capacitor of the switched-capacitor circuit of the cursor tap to a positive signal input over a second time period, and a capacitor of the switched-capacitor circuit of the post-cursor tap to the negative signal input over a third time period. The clock-driven switch circuitry is to switchably couple the capacitors of the switched-capacitor circuits in parallel over a fourth time period.
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公开(公告)号：US12126314B2
公开(公告)日：2024-10-22
申请号：US17216942
申请日：2021-03-30
申请人： Anlotek Limited
发明人： Jorgen Staal Nielsen
CPC分类号： H03H11/12 , H03G3/3036
摘要： A variable filter for an RF circuit has a signal loop comprising a signal input port and a signal output port, and a plurality of circuit elements connected within the signal loop. The plurality of circuit elements comprise a multi-pole resonator comprising a plurality of frequency tunable resonators and an adjustable scaling block that applies a gain factor. Adjacent frequency tunable resonators within the multi-pole resonator are reciprocally coupled. A controller is connected to tune the multi-pole resonator and to adjust the gain factor of the adjustable scaling block such that the signal loop generates a desired bandpass response.
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公开(公告)号：US12120493B2
公开(公告)日：2024-10-15
申请号：US18220982
申请日：2023-07-12
申请人： Apple Inc.
发明人： Avi Bar-Zeev
CPC分类号： H04R3/04 , G02B27/0172 , H04R1/028 , H04R1/10 , G06T19/006
摘要： In one implementation, a method of transforming a sound into a virtual sound for a synthesized reality (SR) setting is performed by a head-mounted device (HMD) including one or more processors, non-transitory memory, a microphone, a speaker, and a display. The method includes displaying, on the display, an image representation of a synthesized reality (SR) setting including a plurality of surfaces associated with an acoustic reverberation property of the SR setting. The method includes recording, via the microphone, a real sound produced in a physical setting. The method further includes generating, using the one or more processors, a virtual sound by transforming the real sound based on the acoustic reverberation property of the SR setting. The method further includes playing, via the speaker, the virtual sound.
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公开(公告)号：US12118970B2
公开(公告)日：2024-10-15
申请号：US17974602
申请日：2022-10-27
摘要： An apparatus including circuitry configured to: obtain at least two audio signals; determine, with respect to the at least two audio signals, an audio object part and an ambience audio part; determine a level parameter based on the ambience audio part; apply a noise suppression to the audio object part, wherein the noise suppression is configured to be controlled based on the determined level parameter; and generate a noise suppressed audio object part based on the applied noise suppression.
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公开(公告)号：US20240340583A1
公开(公告)日：2024-10-10
申请号：US18544351
申请日：2023-12-18
发明人： Ruizhi Lan , Lijian Ye , Hongling Fu , Yuheng Jiang , Kejia Liu
CPC分类号： H04R3/007 , H03F3/20 , H03G1/0005 , H03F2200/03
摘要： The present invention provides a transducer protection system and method. A transducer module at least comprises a transducer, and a signal source is used for generating a first signal; a protection module is used for predicting an actual displacement and/or temperature of the transducer according to the first signal, an amplification factor of the power amplifier and built-in transducer parameters to generate a prediction result, comparing the prediction result with a preset value to generate an analysis result, and regulating the first signal to form a second signal according to the analysis result; a power amplifier is used for receiving the second signal, and performing power amplification on the second signal to form a driving signal; and the transducer module is used for receiving the driving signal, and at least one transducer in the transducer module can work according to the driving signal.
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公开(公告)号：US20240332770A1
公开(公告)日：2024-10-03
申请号：US18739386
申请日：2024-06-11
发明人： Muhammad HASSAN
CPC分类号： H01P1/18 , H03F3/193 , H03F3/50 , H03G3/3042 , H03F2200/294 , H03F2200/541
摘要： A phased array element includes a transmit portion having a plurality of amplifier paths, each amplifier path having a driver amplifier and a power amplifier, a first transformer coupled to the power amplifier of a first amplifier path of the plurality of amplifier paths and a second transformer coupled to the power amplifier of a second amplifier path of the plurality of amplifier paths, a secondary winding of each of the first transformer and the second transformer coupled together by a common transformer segment, a transmit phase shifter switchably coupled to the plurality of amplifier paths, a receive portion coupled to the second transformer, the receive portion having a receive path having a low noise amplifier (LNA), and a receive phase shifter coupled to the LNA.
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公开(公告)号：US12107559B2
公开(公告)日：2024-10-01
申请号：US17739209
申请日：2022-05-09
申请人： Ronald Quan
发明人： Ronald Quan
CPC分类号： H03G11/08 , H03G3/3005 , H04R29/001
摘要： A system is provided to analyze distortion in an electronic or electromechanical device, which may include testing with one or more modulated signals and/or with one or more demodulators. In one embodiment a change in pitch (or frequency) is measured at an output of the device. One or more signals from a demodulator output may be measured for an amplitude, noise, phase, aliasing, spurious signal, and/or frequency modulation effect. In another embodiment a musical signal may be used as a test signal. Providing additional test signals to the device can induce a cross-modulation distortion signal (or time varying cross-modulation distortion signal) from an output of the device. Also utilizing at least one additional filter, filter bank, demodulator and or frequency converter and or frequency multiplier provides extra examination of distortion. Also frequency and/or phase response can be measured with the presence of a de-sensing signal and or another signal that induce near slew rate limiting or near overload condition of the device under test. Another system is provided to analyze modulation index differences between input and output signals for a test signal including modulation. Another system includes providing a nested or layered modulated signal and/or a nested or layered demodulation apparatus or method.
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公开(公告)号：US12107558B2
公开(公告)日：2024-10-01
申请号：US17515695
申请日：2021-11-01
IPC分类号： H03F3/68 , G01S7/03 , G01S13/931 , H01Q1/32 , H01Q21/08 , H03F3/195 , H03F3/21 , H03F3/24 , H03F3/45 , H03G3/30 , H01Q9/06 , H03H7/48 , H04B1/04
CPC分类号： H03F3/68 , G01S7/032 , G01S13/931 , H01Q1/3233 , H01Q21/08 , H03F3/195 , H03F3/211 , H03F3/245 , H03F3/45475 , H03G3/3042 , H01Q9/065 , H03F2200/294 , H03F2200/451 , H03H7/487 , H04B2001/0408
摘要： A system having a set of power amplifiers each having a primary inductive structure configured to provide an output signal. A secondary inductive structure is configured to inductively couple to each of the primary inductive structures. A transmission line is provided with a signal trace and a ground trace. The signal trace of the transmission line is connected to a first end of the secondary inductive structure. A return path from a second end of the secondary inductive structure is coupled via a resonant network to the ground trace of the transmission line, in which the return path is spaced away from the secondary inductive structure to minimize inductive coupling to the primary structures.
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公开(公告)号：US12101612B2
公开(公告)日：2024-09-24
申请号：US18535433
申请日：2023-12-11
申请人： Apple Inc.
发明人： Zhigang Dang , Daniel Naito , Evan Thompson , Peter Poon , Manasi Lagare , Michael Nussbaum , David Sumberg
CPC分类号： H04R3/007 , H03F3/183 , H03G3/3005 , H03F2200/03
摘要： A smart speaker power controller may be configured to receive power conforming to one of a plurality of power modes from an input power source. The power controller may be further configured to communicate the power mode to at least one component of a processing system or at least one component of an audio system for operating the smart speaker according to the received power mode, including determining a current limit of a power converter; determining a shutdown voltage threshold and safely shutting down the smart speaker if the input voltage falls below the threshold, and/or modifying audio operation of the smart speaker in response to the power mode. The smart speaker can further include an audio power supply controller configured to monitor energy required to reproduce an audio signal and to servo a power supply voltage provided to an audio amplifier in response to this energy level.
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公开(公告)号：US12101070B2
公开(公告)日：2024-09-24
申请号：US17808321
申请日：2022-06-23
发明人： Seongcheol Jo , Taek Su An , Sung Hyun Kang , JiUng Lee , Byung Gyou Choi , Jeongsoo Hur , Jeonghun Seo , Sang Bae Chon , Hyun Oh Oh
摘要： A method for processing an audio signal includes setting target loudness; receiving metadata of an audio signal from a server; and adjusting the loudness of the audio signal by using the received metadata, so that the loudness of the audio signal corresponds to the set target loudness.
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