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公开(公告)号：US09743205B2
公开(公告)日：2017-08-22
申请号：US15339267
申请日：2016-10-31
申请人： Robert Bosch GmbH
发明人： Philip Sean Stetson
CPC分类号： H04R29/005 , H04R19/005 , H04R29/004 , H04R2201/003 , H04R2410/05
摘要： A method is provided for testing a MEMS microphone. The MEMS microphone includes a pressure sensor positioned within a housing and a pressure input port to direct acoustic pressure from outside the housing towards the pressure sensor. An acoustic pressure source provides acoustic pressure to the MEMS microphone. A reference microphone is positioned proximal to the MEMS microphone. An output signal of the MEMS microphone and an output signal of the reference microphone are compared. A common signal component is removed from the output signal of the MEMS microphone and the output signal of the MEMS microphone is analyzed for noise due to the construction of the device and for a signal-to-noise ratio of the device. Based on the noise signal and the signal-to-noise ratio, the MEMS microphone is rejected or accepted.
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2.发明申请公开(公告)号：US20170048636A1
公开(公告)日：2017-02-16
申请号：US15339267
申请日：2016-10-31
申请人： Robert Bosch GmbH
发明人： Philip Sean Stetson
IPC分类号： H04R29/00
CPC分类号： H04R29/005 , H04R19/005 , H04R29/004 , H04R2201/003 , H04R2410/05
摘要： A method is provided for testing a MEMS microphone. The MEMS microphone includes a pressure sensor positioned within a housing and a pressure input port to direct acoustic pressure from outside the housing towards the pressure sensor. An acoustic pressure source provides acoustic pressure to the MEMS microphone. A reference microphone is positioned proximal to the MEMS microphone. An output signal of the MEMS microphone and an output signal of the reference microphone are compared. A common signal component is removed from the output signal of the MEMS microphone and the output signal of the MEMS microphone is analyzed for noise due to the construction of the device and for a signal-to-noise ratio of the device. Based on the noise signal and the signal-to-noise ratio, the MEMS microphone is rejected or accepted.
摘要翻译： 提供了一种用于测试MEMS麦克风的方法。 MEMS麦克风包括定位在壳体内的压力传感器和压力输入端口，以将声压从壳体外部引向压力传感器。 声压源为MEMS麦克风提供声压。 参考麦克风位于MEMS麦克风附近。 比较MEMS麦克风的输出信号和参考麦克风的输出信号。 从MEMS麦克风的输出信号中去除公共信号分量，并且由于器件的构造和器件的信噪比，分析了MEMS麦克风的输出信号的噪声。 基于噪声信号和信噪比，MEMS麦克风被拒绝或接受。
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3.发明授权公开(公告)号：US09485599B2
公开(公告)日：2016-11-01
申请号：US14590763
申请日：2015-01-06
申请人： Robert Bosch GmbH
发明人： Philip Sean Stetson
CPC分类号： H04R29/005 , H04R19/005 , H04R29/004 , H04R2201/003 , H04R2410/05
摘要： A method is provided for testing a MEMS microphone. The MEMS microphone includes a pressure sensor positioned within a housing and a pressure input port to direct acoustic pressure from outside the housing towards the pressure sensor. An acoustic pressure source provides acoustic pressure to the MEMS microphone. A reference microphone is positioned proximal to the MEMS microphone. An output signal of the MEMS microphone and an output signal of the reference microphone are compared. A common signal component is removed from the output signal of the MEMS microphone and the output signal of the MEMS microphone is analyzed for noise due to the construction of the device and for a signal-to-noise ratio of the device. Based on the noise signal and the signal-to-noise ratio, the MEMS microphone is rejected or accepted.
摘要翻译： 提供了一种用于测试MEMS麦克风的方法。 MEMS麦克风包括定位在壳体内的压力传感器和压力输入端口，用于将声压从壳体外部引向压力传感器。 声压源为MEMS麦克风提供声压。 参考麦克风位于MEMS麦克风附近。 比较MEMS麦克风的输出信号和参考麦克风的输出信号。 从MEMS麦克风的输出信号中去除公共信号分量，并且由于器件的构造和器件的信噪比，分析了MEMS麦克风的输出信号的噪声。 基于噪声信号和信噪比，MEMS麦克风被拒绝或接受。
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公开(公告)号：US20140270250A1
公开(公告)日：2014-09-18
申请号：US14038097
申请日：2013-09-26
申请人： Robert Bosch GmbH
IPC分类号： H04R3/00
CPC分类号： H03F3/187 , G10K11/178 , H03F3/45928 , H04R1/406 , H04R3/005 , H04R19/005 , H04R2201/003 , H04R2201/405
摘要： Methods and system are described for cancelling interference in a microphone system. A positive bias voltage is applied to a first microphone diaphragm and a negative bias voltage is applied to a second microphone diaphragm. The diaphragms are configured to exhibit substantially the same mechanical deflection in response to acoustic pressures received by the microphone system. A differential output signal is produced by combining a positively-biased output signal from the first microphone diaphragm and a negatively-biased output signal from the second microphone diaphragm. This combining cancels common-mode interferences that are exhibited in both the positively-biased output signal and the negatively-biased output signal.
摘要翻译： 描述了消除麦克风系统干扰的方法和系统。 正偏置电压施加到第一麦克风隔膜，负偏置电压施加到第二麦克风隔膜。 隔膜被构造为响应于由麦克风系统接收的声压而表现出基本相同的机械偏转。 通过组合来自第一麦克风隔膜的正偏置输出信号和来自第二麦克风隔膜的负偏置输出信号来产生差分输出信号。 该组合取消了在正偏置输出信号和负偏置输出信号两者中呈现的共模干扰。
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公开(公告)号：US20160261939A1
公开(公告)日：2016-09-08
申请号：US15156101
申请日：2016-05-16
申请人： Robert Bosch GmbH
CPC分类号： H04R1/04 , H04R3/00 , H04R3/005 , H04R2201/003
摘要： Extending a microphone interface. One microphone interface extension includes a controller, a parent microphone, and a child microphone. The controller outputs a controller clock signal. The parent microphone receives the controller clock signal and generates a first data signal. The child microphone generates a second data signal and outputs the second data signal to the first parent microphone. The parent microphone receives the second data signal from the child microphone and outputs a combined data signal to the controller based on the first data signal and the second data signal. The parent microphone outputs the combined data signal to the controller on a phase of a microphone clock signal derived from the controller clock signal.
摘要翻译： 扩展麦克风接口 一个麦克风接口扩展包括控制器，母麦克风和子麦克风。 控制器输出控制器时钟信号。 母麦克风接收控制器时钟信号并产生第一数据信号。 子麦克风产生第二数据信号，并将第二数据信号输出到第一母麦克风。 母麦克风从子麦克风接收第二数据信号，并基于第一数据信号和第二数据信号将组合的数据信号输出到控制器。 母麦克风在从控制器时钟信号导出的麦克风时钟信号的相位上将组合的数据信号输出到控制器。
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6.发明授权公开(公告)号：US09344809B2
公开(公告)日：2016-05-17
申请号：US14211583
申请日：2014-03-14
申请人： Robert Bosch GmbH
发明人： John Matthew Muza , Philip Sean Stetson , Michael James Daley , Davin Luther Yuknis , Joseph R. Fitzgerald
CPC分类号： H04R23/00 , H04R19/005 , H04R2201/003
摘要： A system and method for controlling and adjusting a low-frequency response of a MEMS microphone. The system comprising the MEMS microphone, a controller, and a memory. The MEMS microphone includes a membrane and a plurality of air vents. The membrane configured such that acoustic pressures acting on the membrane cause movement of the membrane. The plurality of air vents are positioned proximate to the membrane. Each air vent of the plurality of air vents are configured to be selectively positioned in an open position or a closed position. The controller determines an integer number of air vents to be placed in the closed positioned, and generate a signal that causes the integer number of air vents to be placed in the closed position and causes any remaining air vents to be placed in the open position.
摘要翻译： 一种用于控制和调整MEMS麦克风的低频响应的系统和方法。 该系统包括MEMS麦克风，控制器和存储器。 MEMS麦克风包括膜和多个通风孔。 膜被构造成使得作用在膜上的声压引起膜的移动。 多个通风孔位于隔膜附近。 多个通风口中的每个排气孔构造成选择性地定位在打开位置或关闭位置。 控制器确定要放置在关闭位置的通风口的整数，并产生一个信号，使整数个通风口置于关闭位置，并使任何剩余的通风口置于打开位置。
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公开(公告)号：US09124220B2
公开(公告)日：2015-09-01
申请号：US14038097
申请日：2013-09-26
申请人： Robert Bosch GmbH
CPC分类号： H03F3/187 , G10K11/178 , H03F3/45928 , H04R1/406 , H04R3/005 , H04R19/005 , H04R2201/003 , H04R2201/405
摘要： Methods and system are described for cancelling interference in a microphone system. A positive bias voltage is applied to a first microphone diaphragm and a negative bias voltage is applied to a second microphone diaphragm. The diaphragms are configured to exhibit substantially the same mechanical deflection in response to acoustic pressures received by the microphone system. A differential output signal is produced by combining a positively-biased output signal from the first microphone diaphragm and a negatively-biased output signal from the second microphone diaphragm. This combining cancels common-mode interferences that are exhibited in both the positively-biased output signal and the negatively-biased output signal.
摘要翻译： 描述了消除麦克风系统干扰的方法和系统。 正偏置电压施加到第一麦克风隔膜，负偏置电压施加到第二麦克风隔膜。 隔膜被构造为响应于由麦克风系统接收的声压而表现出基本相同的机械偏转。 通过组合来自第一麦克风隔膜的正偏置输出信号和来自第二麦克风隔膜的负偏置输出信号来产生差分输出信号。 该组合取消了在正偏置输出信号和负偏置输出信号两者中呈现的共模干扰。
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公开(公告)号：US09762188B2
公开(公告)日：2017-09-12
申请号：US14822950
申请日：2015-08-11
申请人： Robert Bosch GmbH
CPC分类号： H03F3/187 , G10K11/178 , H03F3/45928 , H04R1/406 , H04R3/005 , H04R19/005 , H04R2201/003 , H04R2201/405
摘要： Methods and system are described for cancelling interference in a microphone system. A positive bias voltage is applied to a first microphone diaphragm and a negative bias voltage is applied to a second microphone diaphragm. The diaphragms are configured to exhibit substantially the same mechanical deflection in response to acoustic pressures received by the microphone system. A differential output signal is produced by combining a positively-biased output signal from the first microphone diaphragm and a negatively-biased output signal from the second microphone diaphragm. This combining cancels common-mode interferences that are exhibited in both the positively-biased output signal and the negatively-biased output signal.
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公开(公告)号：US09756410B2
公开(公告)日：2017-09-05
申请号：US15156101
申请日：2016-05-16
申请人： Robert Bosch GmbH
CPC分类号： H04R1/04 , H04R3/00 , H04R3/005 , H04R2201/003
摘要： Extending a microphone interface. One microphone interface extension includes a controller, a parent microphone, and a child microphone. The controller outputs a controller clock signal. The parent microphone receives the controller clock signal and generates a first data signal. The child microphone generates a second data signal and outputs the second data signal to the first parent microphone. The parent microphone receives the second data signal from the child microphone and outputs a combined data signal to the controller based on the first data signal and the second data signal. The parent microphone outputs the combined data signal to the controller on a phase of a microphone clock signal derived from the controller clock signal.
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公开(公告)号：US09344789B2
公开(公告)日：2016-05-17
申请号：US13912909
申请日：2013-06-07
申请人： Robert Bosch GmbH
CPC分类号： H04R1/04 , H04R3/00 , H04R3/005 , H04R2201/003
摘要： Extending a microphone interface. One microphone interface extension includes a controller, a parent microphone, and a child microphone. The controller outputs a controller clock signal. The parent microphone receives the controller clock signal and generates a first data signal. The child microphone generates a second data signal and outputs the second data signal to the first parent microphone. The parent microphone receives the second data signal from the child microphone and outputs a combined data signal to the controller based on the first data signal and the second data signal. The parent microphone outputs the combined data signal to the controller on a phase of a microphone clock signal derived from the controller clock signal.
摘要翻译： 扩展麦克风接口 一个麦克风接口扩展包括控制器，母麦克风和子麦克风。 控制器输出控制器时钟信号。 母麦克风接收控制器时钟信号并产生第一数据信号。 子麦克风产生第二数据信号，并将第二数据信号输出到第一母麦克风。 母麦克风从子麦克风接收第二数据信号，并基于第一数据信号和第二数据信号将组合的数据信号输出到控制器。 母麦克风在从控制器时钟信号导出的麦克风时钟信号的相位上将组合的数据信号输出到控制器。
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