US Patent Issued to NIPPON TELEGRAPH AND TELEPHONE on May 27 for "Sound signal downmixing method, sound signal coding method, sound signal downmixing apparatus, sound signal coding apparatus, program and recording medium" (Japanese Inventors)

ALEXANDRIA, Va., June 17 -- United States Patent no. 12,315,520, issued on May 27, was assigned to NIPPON TELEGRAPH AND TELEPHONE Corp. (Tokyo).

"Sound signal downmixing method, sound signal coding method, sound signal downmixing apparatus, sound signal coding apparatus, program and recording medium" was invented by Ryosuke Sugiura (Tokyo), Takehiro Moriya (Tokyo) and Yutaka Kamamoto (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A sound signal downmix method includes an inter-channel relationship information obtaining step of obtaining an inter-channel correlation value and preceding channel information of every pair of two channels included in N channels, the inter-channel correlation value being a ...