ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,432,495, issued on Sept. 30, was assigned to Panasonic Automotive Systems Co. Ltd. (Kanagawa, Japan).
"Microphone module and microphone device" was invented by Makoto Takemoto (Kanagawa, Japan) and Susumu Yoneta (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A microphone module includes: a microphone element outputting a microphone signal representing collected sound; an amplifier circuit outputting an amplified signal obtained by amplifying a difference between the microphone signal and a reference voltage; a high-pass filter outputting a high-band amplified signal obtained by filtering the amplified signal; a buffer circuit outputtin...