US 11,984,110 B2
Heterogeneous computing for hybrid acoustic echo cancellation
Xiaoxi Yu, Singapore (SG); Hantao Huang, Singapore (SG); Ziang Yang, Singapore (SG); Chia Hsin Yang, Hsinchu (TW); and Li-Wei Cheng, Hsinchu (TW)
Assigned to MEDIATEK SINGAPORE PTE. LTD., Singapore (SG)
Filed by MediaTek Singapore Pte. Ltd., Singapore (SG)
Filed on Mar. 7, 2022, as Appl. No. 17/688,600.
Prior Publication US 2023/0282197 A1, Sep. 7, 2023
Int. Cl. G10K 11/178 (2006.01); G06F 17/14 (2006.01); G06N 3/045 (2023.01)
CPC G10K 11/17854 (2018.01) [G06F 17/142 (2013.01); G06N 3/045 (2023.01); G10K 11/17821 (2018.01)] 20 Claims
OG exemplary drawing
 
1. A device operative to perform acoustic echo cancellation, comprising:
a speaker to output a far-end signal at the device;
a microphone to receive at least a near-end signal and the far-end signal from the speaker to produce a microphone output;
an artificial intelligence (AI) accelerator operative to perform neural network (NN) operations according to a first NN model and a second NN model to output an echo-suppressed signal; and
a digital signal processing (DSP) unit operative to:
perform adaptive filtering to remove at least a portion of the far-end signal from the microphone output to generate a filtered near-end signal; and
perform Fast Fourier Transform (FFT) and inverse FFT (IFFT) to generate input to the first NN model and the second NN model, respectively.