Patent ID: 11869520
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A computer program product comprising instructions stored on a non-transitory computer-readable medium that, when executed by one or more processing devices, cause the one or more processing devices to:
obtain a low-band signal of a speech signal and a high-band signal of the speech signal;
encode the low-band signal to obtain a low frequency encoding parameter;
encode the high-band signal to obtain a linear predictive coding (LPC) parameter;
obtain, according to the low frequency encoding parameter and the LPC parameter, a synthesized high-band signal;
perform, using a pole-zero filter, filtering processing on the synthesized high-band signal to obtain a processed synthesized high-band signal, wherein a coefficient of the pole-zero filter is based on the LPC parameter; and
perform, using a first-order filter, filtering processing on the processed synthesized high-band signal, wherein a z-domain transfer function of the first-order filter is Ht(z)=1−μz−1.