Audio signal compression method and apparatus using deep neural network-based multilayer structure and training method thereof
US11881227B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 13, 2023 |
| Grant date | Jan 23, 2024 |
| Priority date | — |
| Expiry date | Jan 13, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/13
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method, executed by a processor for compressing an audio signal in multiple layers, may comprise: (a) restoring, in a highest layer, an input audio signal as a first signal; (b) restoring, in at least one intermediate layer, a signal obtained by subtracting an upsampled signal, which is obtained by upsampling the audio signal restored in the highest layer or an immediately previous intermediate layer, from the input audio signal as a second signal; and (c) restoring, in a lowest layer, a signal obtained by subtracting an upsampled signal, which is obtained by upsampling the audio signal restored in an intermediate layer immediately before the lowest layer, from the input audio signal as a third signal, wherein the first signal, the second signal, and the third signal are combined to output a final restoration audio signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.