ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,538,067, issued on Jan. 27, was assigned to Panasonic Intellectual Property Management Co. Ltd. (Osaka, Japan).

"Measurement system and measurement method" was invented by Takeshi Takahashi (Fukuoka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A measurement system includes earphones configured to be worn on a left ear and a right ear of a user and be interchangeably attached with earpieces having different sizes on one end portion of each, and a wireless terminal. Each of the earphones collects a sound signal by a microphone of the earphone in a case that the earphone outputs a sound signal from its speaker, the measurement system performs meas...