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

Claim 14:
15. A method comprising:
obtaining a low band signal of a speech signal and a high-band signal of the speech signal;
encoding the low band signal to obtain a low frequency encoding parameter;
encoding the high-band signal to obtain a linear predictive coding (LPC) parameter;
obtaining, according to the low frequency encoding parameter and the LPC parameter, a synthesized high-band signal;
performing, using a pole-zero filter, first filtering 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
performing, using a first-order filter, second filtering on the processed synthesized high-band signal, wherein a z-domain transfer function of the first-order filter is Ht(z)=1−μz−1.