ALEXANDRIA, Va., March 19 -- United States Patent no. 12,254,895, issued on March 18, was assigned to Digital Voice Systems Inc. (Westford, Mass.).

"Detecting and compensating for the presence of a speaker mask in a speech signal" was invented by Thomas Clark (Westford, Mass.) and John C. Hardwick (Acton, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Compensating a speech signal for the presence of a speaker mask includes receiving a speech signal, dividing the speech signal into subframes, generating speech parameters for a subframe, and determining whether the subframe is suitable for use in detecting a mask. If the subframe is suitable for use in detecting a mask, the speech parameters for the subf...