ALEXANDRIA, Va., July 3 -- United States Patent no. 12,346,804, issued on July 1, was assigned to NIPPON TELEGRAPH AND TELEPHONE Corp. (Tokyo).

"Acoustic model learning apparatus, model learning apparatus, method and program for the same" was invented by Takafumi Moriya (Tokyo), Yusuke Shinohara (Tokyo) and Yoshikazu Yamaguchi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An acoustic model learning apparatus includes a parameter updating part configured to update a parameter of a second acoustic model on the basis of a first loss for a feature amount for training, based on output probability distribution of the second acoustic model which is a neural network acoustic model to be trained, and a second...