ALEXANDRIA, Va., March 17 -- United States Patent no. 12,581,234, issued on March 17, was assigned to PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA (Torrance, Calif.).
"Howling suppression device, howling suppression method, and non-transitory computer readable recording medium storing howling suppression program" was invented by Hiroki Furukawa (Osaka, Japan) and Shinichi Yuzuriha (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A howling suppressing device includes: an adaptive filter that estimates an acoustic feedback characteristic representing a characteristic of an acoustic feedback sound reaching a microphone from a speaker by defining an output signal to the speaker as a referen...