ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,424,225, issued on Sept. 23, was assigned to Habitat Learn Ltd (Woking, Great Britain).
"Lecturer speech signal processing" was invented by Yunjia Li (Chandler's Ford, Great Britain), Jeremy Guy Brassington (Woking, Great Britain) and Daniel Jeffery Goerz (Toronto).
According to the abstract* released by the U.S. Patent & Trademark Office: "A sound signal is received from a room of people, the sound signal including speech of a lecturer. A Fourier transform is applied to the sound signal to produce a spectrogram. An encoding of the spectrogram in a multi-dimensional space is computed using an encoder. A seed is found in the multi-dimensional space, where the seed is a position in th...