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1.发明授权公开(公告)号：US11671775B2
公开(公告)日：2023-06-06
申请号：US17138471
申请日：2020-12-30
CPC分类号： H04R29/004 , H04R3/00 , H04R19/04 , B81B2201/0257 , H04R2201/003
摘要： The disclosure relates generally to microphone and vibration sensor assemblies (100) having a transducer (102), like a microelectromechanical systems (MEMS) device, and an electrical circuit (103) disposed in a housing (110) configured for integration with a host device. The electrical circuit includes a variable gain signal processing circuit (203) that processes an electrical signal from the transducer and a gain control circuit (204) that compensates for transducer sensitivity drift caused by variation in an environmental condition of the transducer, and electrical circuits therefor.
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公开(公告)号：US09503814B2
公开(公告)日：2016-11-22
申请号：US14225705
申请日：2014-03-26
发明人： Jordan T. Schultz , Weiwen Dai , Peter Van Kessel
CPC分类号： H04R3/005 , H04R19/005 , H04R19/04
摘要： An the acoustic apparatus comprising a first MEMS motor that includes a first diaphragm and a first back plate, and a second MEMS motor that includes a second diaphragm and a second back plate. The first motor is biased with a first electrical polarity and a second motor is biased with a second electrical polarity such that the first electrical polarity and the second electrical polarity are opposite. At the first motor, a first signal is created that is representative of received sound energy. At the second motor, a second signal is created that is representative of the received sound energy. A differential output signal that is the representative of the difference between the first signal and the second signal is obtained. In obtaining the differential output signal, common mode noise between the first motor and the second motor is rejected.
摘要翻译： 一种声学装置，包括包括第一隔膜和第一后板的第一MEMS马达和包括第二隔膜和第二背板的第二MEMS马达。 第一电动机以第一电极极性偏置，第二电动机以第二电极极性偏置，使得第一电极性和第二电极性相反。 在第一马达，产生代表所接收的声能的第一信号。 在第二马达，产生代表所接收的声能的第二信号。 获得代表第一信号和第二信号之间的差的差分输出信号。 在获得差分输出信号时，第一马达和第二马达之间的共模噪声被拒绝。
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3.发明申请公开(公告)号：US20220210591A1
公开(公告)日：2022-06-30
申请号：US17138487
申请日：2020-12-30
摘要： The disclosure relates generally to microphone and vibration sensor assemblies (100) having a transducer (102), like a microelectromechanical systems (MEMS) device, and an electrical circuit (103) disposed in a housing (110) configured for integration with a host device. The electrical circuit includes a transducer bias circuit that applies a bias to the transducer and a bias control circuit (204) that compensates for transducer sensitivity drift caused by variation in an environmental condition of the transducer, and electrical circuits therefor.
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公开(公告)号：US20170026759A1
公开(公告)日：2017-01-26
申请号：US15215752
申请日：2016-07-21
发明人： Weiwen Dai
IPC分类号： H04R17/02
CPC分类号： H04R17/02 , H04R1/04 , H04R1/222 , H04R3/005 , H04R19/005 , H04R19/04 , H04R2201/003 , H04R2410/07
摘要： A microphone device is comprises a first micro electro mechanical system (MEMS) device and a second MEMS device with difference size of pierce holes in the diaphragms. Signal outputs from the first and second MEMS devices are selectively used to provide wind noise resistance.
摘要翻译： 麦克风装置包括第一微机电系统（MEMS）装置和隔膜中的穿孔孔尺寸不同的第二MEMS装置。 选择性地使用来自第一和第二MEMS器件的信号输出来提供抗风干扰性。
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公开(公告)号：US10332544B2
公开(公告)日：2019-06-25
申请号：US16018724
申请日：2018-06-26
发明人： Weiwen Dai , Robert A. Popper
摘要： A microphone apparatus including a MEMS transducer, an acoustic activity detector, a local oscillator, and an external-device interface standardized for compatibility with devices from different manufacturers is disclosed. The microphone apparatus has a first mode of operation during which the apparatus is clocked by the internal clock signal when the acoustic activity detector processes digital data for acoustic activity, and a second mode of operation during which the microphone apparatus is clocked by an external clock signal received at the external-device interface after voice activity is detected by the acoustic activity detector.
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公开(公告)号：US20180308511A1
公开(公告)日：2018-10-25
申请号：US16018724
申请日：2018-06-26
发明人： Weiwen Dai , Robert A. Popper
CPC分类号： G10L25/78 , H04R3/00 , H04R2410/00 , H04R2499/11
摘要： A microphone apparatus including a MEMS transducer, an acoustic activity detector, a local oscillator, and an external-device interface standardized for compatibility with devices from different manufacturers is disclosed. The microphone apparatus has a first mode of operation during which the apparatus is clocked by the internal clock signal when the acoustic activity detector processes digital data for acoustic activity, and a second mode of operation during which the microphone apparatus is clocked by an external clock signal received at the external-device interface after voice activity is detected by the acoustic activity detector.
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公开(公告)号：US10020008B2
公开(公告)日：2018-07-10
申请号：US14533652
申请日：2014-11-05
发明人： Weiwen Dai , Robert A. Popper
CPC分类号： G10L25/78 , H04R3/00 , H04R2410/00 , H04R2499/11
摘要： Analog signals are received from a sound transducer. The analog signals are converted into digitized data. A determination is made as to whether voice activity exists within the digitized signal. Upon the detection of voice activity, an indication of voice activity is sent to a processing device. The indication is sent across a standard interface, and the standard interface is configured to be compatible to be coupled with a plurality of devices from potentially different manufacturers.
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8.发明授权公开(公告)号：US11743666B2
公开(公告)日：2023-08-29
申请号：US17138487
申请日：2020-12-30
CPC分类号： H04R29/004 , B81B7/008 , H04R1/04 , H04R3/00 , H04R19/04 , B81B2201/0257 , B81B2207/03 , H04R2201/003
摘要： The disclosure relates generally to microphone and vibration sensor assemblies (100) having a transducer (102), like a microelectromechanical systems (MEMS) device, and an electrical circuit (103) disposed in a housing (110) configured for integration with a host device. The electrical circuit includes a transducer bias circuit that applies a bias to the transducer and a bias control circuit (204) that compensates for transducer sensitivity drift caused by variation in an environmental condition of the transducer, and electrical circuits therefor.
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9.发明申请公开(公告)号：US20220210590A1
公开(公告)日：2022-06-30
申请号：US17138471
申请日：2020-12-30
摘要： The disclosure relates generally to microphone and vibration sensor assemblies (100) having a transducer (102), like a microelectromechanical systems (MEMS) device, and an electrical circuit (103) disposed in a housing (110) configured for integration with a host device. The electrical circuit includes a variable gain signal processing circuit (203) that processes an electrical signal from the transducer and a gain control circuit (204) that compensates for transducer sensitivity drift caused by variation in an environmental condition of the transducer, and electrical circuits therefor.
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公开(公告)号：US20150058001A1
公开(公告)日：2015-02-26
申请号：US14533652
申请日：2014-11-05
发明人： Weiwen Dai , Robert A. Popper
IPC分类号： G10L25/78
CPC分类号： G10L25/78 , H04R3/00 , H04R2410/00 , H04R2499/11
摘要： Analog signals are received from a sound transducer. The analog signals are converted into digitized data. A determination is made as to whether voice activity exists within the digitized signal. Upon the detection of voice activity, an indication of voice activity is sent to a processing device. The indication is sent across a standard interface, and the standard interface is configured to be compatible to be coupled with a plurality of devices from potentially different manufacturers.
摘要翻译： 模拟信号从声音传感器接收。 模拟信号转换为数字化数据。 确定语音活动是否存在于数字化信号内。 在检测到语音活动时，将语音活动的指示发送到处理设备。 该指示通过标准接口发送，并且标准接口被配置为兼容以与来自潜在不同制造商的多个设备耦合。
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