Scene recognition method, device and mobile terminal based on ambient sound
US9542938B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2013 |
| Grant date | Jan 10, 2017 |
| Priority date | — |
| Expiry date | Apr 18, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/24
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present document provides a scene recognition method and device based on ambient sound and a mobile terminal. The device includes: a sound collection module, a preprocessing module, a feature extraction module, a scene recognition module and a database. The method includes: collecting a sound signal; processing the sound signal into a frequency domain signal; extracting sound feature information from the frequency domain signal; inputting the sound feature information under a preset model, matching a model output result with weight values of sound sample models of scenes, and determining a scene corresponding to the sound feature information. The present document implements locating based on background sound information as the feature of the scene, so that the mobile terminal quickly and correctly recognizes the current scene under the maintaining low-consumption state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.