US Patent Issued to Board of Trustees of Michigan State University on July 1 for "Speaker verification system using ultrasound energy in human speech" (Michigan Inventors)

ALEXANDRIA, Va., July 3 -- United States Patent no. 12,347,440, issued on July 1, was assigned to Board of Trustees of Michigan State University (East Lansing, Mich.).

"Speaker verification system using ultrasound energy in human speech" was invented by Qiben Yan (Okemos, Mich.), Hanqing Guo (Okemos, Mich.) and Li Xiao (Okemos, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A speaker verification system includes an ultrasonic microphone generating electrical sound signal from an audio signal corresponding to both ultrasonic frequency sound and sub-ultrasonic frequency sound. A liveness detection module generates a high frequency energy distribution based on the electrical sound signal. The liveness mod...