ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,744,047, issued on Sept. 22, was assigned to Amazon Technologies Inc. (Seattle).
"Adaptive enhancement of coded speech" was invented by Jan Buethe (Munich), Jean-Marc Valin (Montreal) and Ahmed Mustafa (Aachen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "Adaptive code enhancement includes receiving feature data of a speech waveform having a plurality of frames, inferring a bitrate based on a quantity of bits of the plurality of frames received from the decoder codec, generating one or more latent feature vectors in accordance with the bitrate and based on the feature data, receiving one or more pitch lags and a speech signal, calculating fil...