公开(公告)号：US20160149542A1

公开(公告)日：2016-05-26

申请号：US14553973

申请日：2014-11-25

Applicant: INVENSENSE, INC.

Inventor： Igor Mucha ,  Tomás Piták ,  James Salvia ,  Baris Cagdaser

IPC: H03F1/08 ,  H04R3/00 ,  H03F3/181

CPC classification number: H04R3/00 ,  H03F3/183 ,  H03F2200/03 ,  H03F2200/372 ,  H03F2200/375 ,  H03F2200/444 ,  H04R1/08 ,  H04R3/04 ,  H04R19/005 ,  H04R2201/003

Abstract: Systems and techniques for processing a signal associated with a microphone are presented. The system includes a microphone component and a preamplifier. The microphone component is contained in a housing. The preamplifier includes an input buffer that receives a signal generated by the microphone component. The input buffer also generates an output signal that comprises a direct current (DC) voltage offset in comparison to the signal, where the preamplifier controls a degree of the DC voltage offset based on a control signal.

Abstract translation: 提出了用于处理与麦克风相关联的信号的系统和技术。 该系统包括麦克风组件和前置放大器。 麦克风组件包含在外壳中。 前置放大器包括接收由麦克风组件产生的信号的输入缓冲器。 输入缓冲器还产生与信号相比包括直流（DC）电压偏移的输出信号，其中前置放大器基于控制信号控制DC电压偏移的程度。

公开(公告)号：US09661433B2

公开(公告)日：2017-05-23

申请号：US14168983

申请日：2014-01-30

Applicant: InvenSense, Inc.

Inventor： James Salvia ,  Baris Cagdaser ,  Aleksey S. Khenkin

IPC: H04R29/00 ,  H04R19/00 ,  G01H17/00

CPC classification number: H04R29/004 ,  G01H17/00 ,  G01V13/00 ,  H04R19/005 ,  H04R19/04 ,  H04R2201/003

Abstract: A method and circuit for testing an acoustic sensor are disclosed. In a first aspect, the method comprises using electro-mechanical features of the acoustic sensor to measure characteristic of the acoustic sensor. In a second aspect, the method comprises utilizing an actuation signal to evaluate mechanical characteristics of the acoustic sensor. In a third aspect, the method comprises using a feedthrough cancellation system to measure a capacitance of the acoustic sensor. In the fourth aspect, the circuit comprises a mechanism for driving an electrical signal into a signal path of the acoustic sensor to cancel an electrical feedthrough signal provided to the signal path, wherein any of the electrical signal and the electrical feedthrough signal are within or above an audio range.

公开(公告)号：US10587969B2

公开(公告)日：2020-03-10

申请号：US15598214

申请日：2017-05-17

Applicant: INVENSENSE, Inc.

Inventor： James Salvia ,  Baris Cagdaser ,  Aleksey S. Khenkin

IPC: H04R29/00 ,  G01H17/00 ,  H04R19/00 ,  H04R19/04 ,  G01V13/00

Abstract: A method and circuit for testing an acoustic sensor are disclosed. In a first aspect, the method comprises using electro-mechanical features of the acoustic sensor to measure characteristic of the acoustic sensor. In a second aspect, the method comprises utilizing an actuation signal to evaluate mechanical characteristics of the acoustic sensor. In a third aspect, the method comprises using a feedthrough cancellation system to measure a capacitance of the acoustic sensor. In the fourth aspect, the circuit comprises a mechanism for driving an electrical signal into a signal path of the acoustic sensor to cancel an electrical feedthrough signal provided to the signal path, wherein any of the electrical signal and the electrical feedthrough signal are within or above an audio range.

公开(公告)号：US09451359B2

公开(公告)日：2016-09-20

申请号：US14553973

申请日：2014-11-25

Applicant: INVENSENSE, INC.

Inventor： Igor Mucha ,  Tomá{hacek over (s)} Piták ,  James Salvia ,  Baris Cagdaser

IPC: H04R3/00 ,  H03F3/183

CPC classification number: H04R3/00 ,  H03F3/183 ,  H03F2200/03 ,  H03F2200/372 ,  H03F2200/375 ,  H03F2200/444 ,  H04R1/08 ,  H04R3/04 ,  H04R19/005 ,  H04R2201/003

Abstract: Systems and techniques for processing a signal associated with a microphone are presented. The system includes a microphone component and a preamplifier. The microphone component is contained in a housing. The preamplifier includes an input buffer that receives a signal generated by the microphone component. The input buffer also generates an output signal that comprises a direct current (DC) voltage offset in comparison to the signal, where the preamplifier controls a degree of the DC voltage offset based on a control signal.

Abstract translation: 提出了用于处理与麦克风相关联的信号的系统和技术。 该系统包括麦克风组件和前置放大器。 麦克风组件包含在外壳中。 前置放大器包括接收由麦克风组件产生的信号的输入缓冲器。 输入缓冲器还产生与信号相比包括直流（DC）电压偏移的输出信号，其中前置放大器基于控制信号控制DC电压偏移的程度。