Loudspeaker control system
US11979720B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 6, 2022 |
| Grant date | May 7, 2024 |
| Priority date | — |
| Expiry date | Oct 29, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S2400/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for automatically adjusting a volume of a loudspeaker includes a loudspeaker and a processor. An infrared sensor, which generates a sensing signal when sensing IR radiation from a heat-radiating source, is disposed on the loudspeaker. The sensing signal provides a size information commensurate with a size of the heat-radiating source. The processor receives a plurality of the sensing signals at different time points to obtain a plurality of corresponding size information, realizes a change of distance between the heat-radiating source and the loudspeaker according to a change of the size information, and generates a volume-adjusting signal according to the change of distance between the heat-radiating source and the loudspeaker. The volume-adjusting signal is transmitted to the loudspeaker to adjust the volume of the loudspeaker accordingly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.