Audio signal processing method and apparatus for controlling loudness level and dynamic range
US11641182B2 · kind B2 · utility
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3References
14Claims
0Family size
Assignee
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Key dates
| Filing date | May 27, 2022 |
| Grant date | May 2, 2023 |
| Priority date | — |
| Expiry date | May 27, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/01
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Disclosed is a method of operating an audio signal processing apparatus playing content including an audio signal. The method includes receiving the audio signal, receiving metadata including information related to a loudness of the audio signal, the metadata including loudness distribution information indicating, for each of a plurality of steps separated according to a loudness magnitude, a ratio between an amount of the audio signal corresponding to each of the plurality of steps of the audio signal and a total amount of the audio signal, and adjusting the loudness of the audio signal based on the metadata.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.