公开(公告)号：US11315586B2

公开(公告)日：2022-04-26

申请号：US17039445

申请日：2020-09-30

Applicant: BRITISH CAYMAN ISLANDS INTELLIGO TECHNOLOGY INC.

Inventor： Bing-Han Huang ,  Chun-Ming Huang ,  Te-Lung Kung ,  Hsin-Te Hwang ,  Yao-Chun Liu ,  Chen-Chu Hsu ,  Tsung-Liang Chen

IPC: G10L21/0208 ,  G10L25/21 ,  G10L25/30

Abstract: A speech enhancement apparatus is disclosed and comprises an adaptive noise cancellation circuit, a blending circuit, a noise suppressor and a control module. The ANC circuit filters a reference signal to generate a noise estimate and subtracts a noise estimate from a primary signal to generate a signal estimate based on a control signal. The blending circuit blends the primary signal and the signal estimate to produce a blended signal. The noise suppressor suppresses noise over the blended signal using a first trained model to generate an enhanced signal and a main spectral representation from a main microphone and M auxiliary spectral representations from M auxiliary microphones using (M+1) second trained models to generate a main score and M auxiliary scores. The ANC circuit, the noise suppressor and the trained models are well combined to maximize the performance of the speech enhancement apparatus.