公开(公告)号：US20170251317A1

公开(公告)日：2017-08-31

申请号：US15593170

申请日：2017-05-11

Applicant: Cirrus Logic, Inc.

Inventor： Samuel Ponvarma Ebenezer ,  Seth Suppappola ,  Clifton Cordes

IPC: H04R29/00 ,  H04R1/32 ,  H04R3/00 ,  H04R1/08

CPC classification number: H04R29/006 ,  G01R25/00 ,  G01R31/3167 ,  G01R31/31701 ,  G01R31/31901 ,  G01R31/31905 ,  H04R1/083 ,  H04R1/326 ,  H04R3/005 ,  H04R29/004 ,  H04R29/005

Abstract: Test apparatus measuring relative frequency response of first and second microphones includes a rotatable carrier. First and second microphones are sealingly clamped against a mounting surface of the carrier aligned with first and second apertures therein, such apertures lying equidistant from, and on opposite sides of, the carrier's axis of rotation. The carrier initially positions the first microphone closest to an audible signal source, and the responses of the microphones to an audible excitation signal are measured. The carrier is rotated 180 degrees, and the measurements are repeated. Elongated strips of gasket material are used to align the microphones and to form a seal with the carrier. When microphones are mounted deep within an audio device, the audio device is sealingly clamped against a mounting plate, sequentially aligning the mounting plate aperture with first and second apertures of the audio device housing corresponding to first and second microphones disposed therein.

公开(公告)号：US09674626B1

公开(公告)日：2017-06-06

申请号：US14454576

申请日：2014-08-07

Applicant: Cirrus Logic, Inc.

Inventor： Samuel Ponvarma Ebenezer ,  Seth Suppappola ,  Clifton Cordes

IPC: H04R29/00 ,  G01R25/00 ,  G01R31/3167 ,  G01R31/317 ,  G01R31/319

CPC classification number: H04R29/006 ,  G01R25/00 ,  G01R31/3167 ,  G01R31/31701 ,  G01R31/31901 ,  G01R31/31905 ,  H04R1/083 ,  H04R1/326 ,  H04R3/005 ,  H04R29/004 ,  H04R29/005

Abstract: Test apparatus measuring relative frequency response of first and second microphones includes a rotatable carrier. First and second microphones are sealingly clamped against a mounting surface of the carrier aligned with first and second apertures therein, such apertures lying equidistant from, and on opposite sides of, the carrier's axis of rotation. The carrier initially positions the first microphone closest to an audible signal source, and the responses of the microphones to an audible excitation signal are measured. The carrier is rotated 180 degrees, and the measurements are repeated. Elongated strips of gasket material are used to align the microphones and to form a seal with the carrier. When microphones are mounted deep within an audio device, the audio device is sealingly clamped against a mounting plate, sequentially aligning the mounting plate aperture with first and second apertures of the audio device housing corresponding to first and second microphones disposed therein.

公开(公告)号：US09980070B2

公开(公告)日：2018-05-22

申请号：US15593170

申请日：2017-05-11

Applicant: Cirrus Logic, Inc.

Inventor： Samuel Ponvarma Ebenezer ,  Seth Suppappola ,  Clifton Cordes

IPC: H04R29/00 ,  H04R1/08 ,  H04R1/32 ,  H04R3/00 ,  G01R31/3167 ,  G01R31/319 ,  G01R31/317 ,  G01R25/00

CPC classification number: H04R29/006 ,  G01R25/00 ,  G01R31/3167 ,  G01R31/31701 ,  G01R31/31901 ,  G01R31/31905 ,  H04R1/083 ,  H04R1/326 ,  H04R3/005 ,  H04R29/004 ,  H04R29/005

Abstract: Test apparatus measuring relative frequency response of first and second microphones includes a rotatable carrier. First and second microphones are sealingly clamped against a mounting surface of the carrier aligned with first and second apertures therein, such apertures lying equidistant from, and on opposite sides of, the carrier's axis of rotation. The carrier initially positions the first microphone closest to an audible signal source, and the responses of the microphones to an audible excitation signal are measured. The carrier is rotated 180 degrees, and the measurements are repeated. Elongated strips of gasket material are used to align the microphones and to form a seal with the carrier. When microphones are mounted deep within an audio device, the audio device is sealingly clamped against a mounting plate, sequentially aligning the mounting plate aperture with first and second apertures of the audio device housing corresponding to first and second microphones disposed therein.