The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 2026
Filed:
Jun. 20, 2023
Cohu Gmbh, Kolbermoor, DE;
Anton Schuster, Grassau, DE;
Rainer Hittmann, Großkarolinenfeld, DE;
Franz Pichl, Übersee, DE;
Helmut Scheibenzuber, Weyarn, DE;
COHU GMBH, Kolbermoor, DE;
Abstract
A sound test device for testing a DUT in particular a MEMS microphone, comprises a sound chamber a socket unit and a sound generator unit, wherein the sound generator unit includes a speaker comprising a speaker membrane, an opening, and a reference microphone comprising a microphone membrane wherein the opening is adapted to receive a DUT opening of the DUT and wherein the microphone membrane and the opening are arranged to opposing each other, and the socket unit includes the at least one contact element being adapted to contact to a contact terminal of the DUT, and wherein the sound chamber is limited by the speaker membrane, the microphone membrane, and the opening.