ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,825, issued on Feb. 10, was assigned to Meyer Sound Laboratories Inc. (Berkeley, Calif.).

"Method and system for performing transfer function measurements on a device" was invented by Juan David Sierra Lozano (Abu Dhabi, United Arab Emirates), Roger Schwenke (Alameda, Calif.) and Swapan Gandhi (El Cerrito, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for performing transfer function measurements on a device such as a loudspeaker (referred to as a device under test or DUT) using a two-channel transfer function analyzer without a live copy of the DUT test signal. A virtual reference test signal, which is a copy of the DUT test signal...