ALEXANDRIA, Va., June 12 -- United States Patent no. 12,301,769, issued on May 13, was assigned to Cirrus Logic Inc. (Austin, Texas).
"Echo cancellation" was invented by Robert D. Rand (Peebles, Great Britain), Jon E. Eklund (Austin, Texas), Pradeep Saminathan (Edinburgh, Great Britain) and Peter Horsfall (Edinburgh, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "In an example, an audio system, which may comprise an integrated circuit, comprises an amplifier and a combiner. The amplifier is configured to output a first amplified audio signal to a speaker. The combiner is configured to: receive the first amplified audio signal from the amplifier, receive a second audio signal, combine the first ...