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:
Dec. 23, 2025
Filed:
Nov. 25, 2022
Aac Acoustic Technologies (Shenzhen) Co., Ltd., Shenzhen, CN;
Siewseong Tan, Singapore, SG;
Yangmeng Chang, Singapore, SG;
Tiongkee Chua, Singapore, SG;
Jingxin Pu, Shenzhen, CN;
Rui Zhang, Shenzhen, CN;
AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO., LTD., Shenzhen, CN;
Abstract
The present invention provides a microphone, including a protection structure with a containment space, and an ASIC chip and a MEMS microphone chip accommodated in the containment space. The microphone also includes a low pass filter circuit. The low pass filter circuit is connected between the ASIC chip and the MEMS microphone chip, or the low pass filter circuit is integrated in the ASIC chip. The high frequency cutoff frequency of the low pass filter circuit is greater than 20 khz, so that by setting the low pass filter circuit, the interference of the ultrasonic frequency band can be filtered, the noise can be reduced, and the audio quality can be improved.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile