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:
Apr. 05, 2022
Filed:
Oct. 20, 2020
Realtek Semiconductor Corporation, Hsinchu, TW;
Wei-Hung He, Hsinchu, TW;
REALTEK SEMICONDUCTOR CORPORATION, Hsinchu, TW;
Abstract
The present disclosure discloses a sound receiving that includes an air conduction sound receiving circuit, a bone conduction sound receiving circuit, an adaptive filter, a crossover frequency control circuit and a synthesis circuit. The air conduction sound receiving circuit generates an air conduction sound signal. The bone conduction sound receiving circuit generates a bone conduction sound signal. The adaptive filter performs calculation according to a minimum of an error function in real time to generate a transferring filter function to filter the bone conduction sound signal to generate a transferred bone conduction sound signal. The crossover frequency control circuit determines a crossover frequency according to a maximum energy frequency point of the transferring filter function on a frequency domain. The synthesis circuit synthesizes the air conduction sound signal higher than the crossover frequency and the bone conduction sound signal lower than the crossover frequency to generate a synthesized sound signal.