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:
Oct. 21, 2025
Filed:
Apr. 28, 2022
Aac Acoustic Technologies (Shenzhen) Co., Ltd., Shenzhen, CN;
Dong Han, Singapore, SG;
Chuationg Kee, Singapore, SG;
AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO., LTD., Shenzhen, CN;
Abstract
The invention provides a microphone circuit, which includes an amplifier, a bias resistor and a bias network module. The first terminal of bias resistor connects to the preset bias voltage. The second end of the bias resistor connects the output end of the microphone. The bias network module is used to judge level of the voltage value of the signal. If the voltage value of the signal exceeds the preset voltage value of the threshold voltage group range, connect the impeder corresponding to the bias network module to the input end of the microphone circuit. The invention provides a microphone module and a method for raising sound pressure overload point of microphone. Compared with the related art, the technical scheme of the invention improves the sound pressure overload point of microphone and has good electrical performance.