Controlling spatial signal enhancement filter length based on direct-to-reverberant ratio estimation
US11012804B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2020 |
| Grant date | May 18, 2021 |
| Priority date | — |
| Expiry date | Apr 13, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S2420/01
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An audio system for adaptively adjusting spatial sound signal enhancement filter lengths based on estimated direct-to-reverberant ratio (DRR) values. In response to detecting sound waves, sensors in a client device, such as a headset worn by a user, generate audio signals. The audio signals are analyzed to estimate the DRR values associated with the location. A value of a spatial signal enhancement filter length is obtained based on a model. The obtained spatial signal enhancement filter length is used to generate filters for filtering audio signals and generating audio content that are to be provided to an audio system of the headset for audio playback to the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.