Patent ID: 11930331
Assignee: GOERTEK INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for processing sound signals from first sound reception apparatus and second sound reception apparatus, the first sound reception apparatus and the second sound reception apparatus having a corresponding reception delay constant therebetween, comprising:
receiving the first sound signal through the first sound reception apparatus and the second sound signal through a second sound reception apparatus;
performing delay processing on the first sound signal according to the reception delay constant at each of a plurality of signal processing times to acquire a signal correlation coefficient between the first sound signal after the delay processing and the second sound signal;
detecting whether the first sound signal and the second sound signal include a coherent noise signal according to the signal correlation coefficient between the first sound signal after the delay processing and the second sound signal;
filtering the coherent noise signal from the first sound signal and the second sound signal when the coherent noise signal is included in the first sound signal and the second sound signal, to acquire and output a target sound signal at a corresponding signal processing time;
wherein the detecting whether the first sound signal and the second sound signal include a coherent noise signal according to the signal correlation coefficient between the first sound signal after the delay processing and the second sound signal comprises:
setting a detection delay set according to the reception delay constant when the signal correlation coefficient between the first sound signal after the delay processing and the second sound signal is greater than a correlation coefficient threshold;
performing delay processing on the first sound signal according to the detection delay set to acquire a coherent detection coefficient set between the first sound signal after the delay processing and the second sound signal; the coherent detection coefficient set includes coherent detection coefficients respectively corresponding to each detection delay in the detection delay set;
determining that the first sound signal and the second sound signal include a coherent noise signal when the coherent detection coefficient larger than the signal correlation coefficient exists in the coherent detection coefficient set.