Ratio mask post-filtering for audio enhancement
US11521637B1 · kind B1 · utility
2Cited by
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20Claims
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Key dates
| Filing date | Sep 29, 2020 |
| Grant date | Dec 6, 2022 |
| Priority date | — |
| Expiry date | Dec 30, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Post-filtering may be performed for ratio masks as part of audio enhancement. Audio data may be received. A machine learning model may be applied to generate gain values for different spectrum bands of the audio data. The gain values may then be modified using an envelope post-filter according to a monotonically increasing function applied to the gain values to produce modified gain values used to generate an enhanced version of the audio data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.