ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,783,578, issued on Nov. 3, was assigned to The Nielsen Co. (US) LLC (New York).
"Methods and apparatus to perform audio watermarking and watermark detection and extraction" was invented by Venugopal Srinivasan (Palm Harbor, Fla.) and Alexander Topchy (New Port Richey, Fla.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and apparatus to audio watermarking and watermark detection and extracted are described herein. An example method includes receiving a media content signal, sampling the media content signal to generate samples, storing the samples in a buffer, determining a first sequence of samples in the buffer, determining a second sequence of ...