Patent ID: 11869528
Assignee: SUZHOU KEDA TECHNOLOGY CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 2:
3. The voice signal processing method according to claim 2, wherein,
using the frequency domain signal and the autocorrelation power spectrum to calculate the initial echo loss comprises:
performing unary linear regression analysis on the residual signal and the estimated echo signal to obtain a leakage coefficient of each signal frame in the target voice signal;
judging an estimated residual echo value, according to a preset correspondence relationship between the leakage coefficient and the signal autocorrelation power spectrum, in combination with the signal autocorrelation power spectrum;
using a residual echo suppression function to suppress a residual echo to obtain a residual echo suppression signal;
using the residual echo suppression signal and the proximal signal to determine the initial echo loss corresponding to each signal frame in the target voice signal.