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

Claim 1:
2. The voice signal processing method according to claim 1, wherein, the derivative signal comprises a residual signal, an estimated echo signal, a distal reference signal and a proximal signal; using the derivative signal to respectively calculate an initial echo loss corresponding to each signal frame in the target voice signal comprises:
converting the derivative signal into a frequency domain signal, and calculating an autocorrelation power spectrum; wherein, the frequency domain signal comprises a residual frequency domain signal, estimated echo frequency domain signal, distal reference frequency domain signal and proximal frequency domain signal, the autocorrelation power spectrum comprises residual signal autocorrelation power spectrum, estimated echo signal autocorrelation power spectrum and distal reference signal autocorrelation power spectrum;
calculating the initial echo loss, according to the frequency domain signal and the autocorrelation power spectrum.