US Patent Issued to NEC, TOYOTA JIDOSHA on Oct. 28 for "Signal processing device, microphone device, signal processing method, and recording medium" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,456,448, issued on Oct. 28, was assigned to NEC Corp. (Tokyo) and TOYOTA JIDOSHA K.K. (Toyota, Japan).

"Signal processing device, microphone device, signal processing method, and recording medium" was invented by Kouji Oosugi (Tokyo) and Hiroki Okada (Toyota, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A signal processing device determines whether a relationship between a first signal and a second signal satisfies a first condition, the first signal being based on an output of a first microphone inserted into an ear canal of a user, the second signal being based on an output of a second microphone positioned outside the ear canal. The signal pr...