Audio signal encoding method and apparatus and audio signal decoding method and apparatus using psychoacoustic-based weighted error function
US11416742B2 · kind B2 · utility
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7Claims
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Key dates
| Filing date | Sep 5, 2018 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Jun 17, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/69
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided is a training method of a neural network that is applied to an audio signal encoding method using an audio signal encoding apparatus, the training method including generating a masking threshold of a first audio signal before training is performed, calculating a weight matrix to be applied to a frequency component of the first audio signal based on the masking threshold, generating a weighted error function obtained by correcting a preset error function using the weight matrix, and generating a second audio signal by applying a parameter learned using the weighted error function to the first audio signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.