Patent №
US 11,158,335
Granted
2021-10-26
Filed 2019
Owner
AMAZON TECHNOLOGIES, INC.
Lab
AI components
1
speech
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
16368107
A voice-controlled device includes a beamformer for determining audio data corresponding to one or more directions and a beam selector for selecting in which direction a source of target audio lies. The device determines magnitude spectrums for each beam and for each frequency bin in each beam for each frame of audio data. The device determines frame-by-frame changes in the magnitude and filters the changes to smooth them. The device selects the beam having the greatest smoothed change in magnitude as corresponding to speech.
AI classification
Ownership
AMAZON TECHNOLOGIES, INC.
assignment · 522750256
Assignors
GANGULY, ANSHUMAN, KANDADAI, SRIVATSAN, KIM, WONTAK
On an employer assignment, the assignors are typically the inventors.