ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,531,076, issued on Jan. 20, was assigned to DOLBY INTERNATIONAL AB (Dublin).
"Post filter for audio signals" was invented by Barbara Resch (Solna, Sweden), Kristofer Kjorling (Solna, Sweden) and Lars Villemoes (Jarfalla, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "In some embodiments, a pitch filter for filtering a preliminary audio signal generated from an audio bitstream is disclosed. The pitch filter has an operating mode selected from one of either: (i) an active mode where the preliminary audio signal is filtered using filtering information to obtain a filtered audio signal, and (ii) an inactive mode where the pitch filter is disabled. Th...