Head tracking with limited angle output
US6532291B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 22, 1997 |
| Grant date | Mar 11, 2003 |
| Priority date | — |
| Expiry date | Oct 22, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S7/304
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method is dislcosed for stabilizing the apparent location of an audio signal having spatial components, in the presence of movement of emission sources designed to emit the audio signal while maintaining the apparent location, the method comprising the steps of (a) high pass filtering a signal proportional to the angular position of the emission sources; (b) utilizing the high pass filtered signal as an apparent angular position of the emission sources to determine an apparent location of the audio signal. Preferably, the high pass filtered signal is limited utilizing a non-linear asymptotically bounded function to limit the signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.