US 12,406,682 B2
Real-time low-complexity echo cancellation
Zhaofeng Jia, Saratoga, CA (US); Yang Liu, Wetherby (GB); and Qiyong Liu, Singapore (SG)
Assigned to Zoom Communications, Inc., San Jose, CA (US)
Filed by Zoom Video Communications, Inc., San Jose, CA (US)
Filed on Oct. 27, 2021, as Appl. No. 17/512,506.
Claims priority of application No. 202111122229.9 (CN), filed on Sep. 24, 2021.
Prior Publication US 2023/0096565 A1, Mar. 30, 2023
Int. Cl. H04B 3/20 (2006.01); G10L 21/0208 (2013.01)
CPC G10L 21/0208 (2013.01) [G10L 2021/02082 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A computer-implemented method for acoustic echo cancellation, comprising:
generating a far-end audio signal representation, a near-end audio signal representation, and a linear output signal representation based on a far-end audio signal, a near-end audio signal, and a linear output signal, respectively;
inputting the far-end audio signal representation, the near-end audio signal representation, and the linear output signal representation into an AEC network comprising one or more network blocks to generate a mask, each network block comprising one or more convolutional blocks, each convolutional block comprising one or more neural networks;
combining the mask and the near-end audio signal representation to generate an echo-cancelled audio signal representation; and
generating an echo-cancelled audio signal based on the echo-cancelled audio signal representation.