Adjustment of dynamic range and tone mapping in audio system
US11190875B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2018 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Nov 16, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S2400/13
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present disclosure relates to an audio system and a method of controlling the same. An aspect of the present disclosure is to provide an optimal listening state according to a user setting volume and hardware characteristics of an audio system. The audio system includes a signal inputter configured to receive an input audio signal; a signal processor configure to variably apply a dynamic range for each area of the input audio signal, to apply a scaling of a size corresponding to an inverse number of a boosting gain determined by a user setting volume for the input audio signal, to perform a tone mapping of the input audio signal by applying the boosting gain, to perform signal compensation for the input audio signal by the inverse number of the scaling, and to apply a master volume according to the user setting volume; a storage configured to store parameters used in signal processing of the signal processor; and a signal outputter configured to output the audio signal processed by the signal processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.