Signal classifying method and device, and audio encoding method and device using same
US10504540B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2018 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Oct 1, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an audio encoding and, more particularly, to a signal classifying method and device, and an audio encoding method and device using the same, which can reduce a delay caused by an encoding mode switching while improving the quality of reconstructed sound. The signal classifying method may comprise the operations of: classifying a current frame into one of a speech signal and a music signal; determining, on the basis of a characteristic parameter obtained from multiple frames, whether a result of the classifying of the current frame includes an error; and correcting the result of the classifying of the current frame in accordance with a result of the determination. By correcting an initial classification result of an audio signal on the basis of a correction parameter, the present invention can determine an optimum coding mode for the characteristic of an audio signal and can prevent frequent coding mode switching between frames.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.