Method and apparatus for post-processing audio signal, storage medium, and electronic device
US12002484B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2022 |
| Grant date | Jun 4, 2024 |
| Priority date | — |
| Expiry date | Sep 1, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/002
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
This application discloses a method and an apparatus for processing an audio signal. The method includes obtaining a first speech signal acquired by a first device; performing frame blocking on the first speech signal, to obtain multiple speech signal frames; converting the multiple speech signal frames into multiple first frequency domain signal frames; performing aliasing processing on a first sub-frequency domain signal frame among the multiple first frequency domain signal frames with a frequency lower than or equal to a target frequency threshold, and retaining a second sub-frequency domain signal frame among the multiple first frequency domain signal frames with a frequency higher than the target frequency threshold, to obtain multiple second frequency domain signal frames, the target frequency threshold being related to a sampling frequency of a second device; and performing frame fusion on the multiple second frequency domain signal frames, to obtain a second speech signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.