Stereo sound expander
US6614910B1 · kind B1 · utility
16Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1999 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Jul 16, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S1/002
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A stereo sound expander reproduces a realistic sound image in three dimensions by coupling modified and unmodified stereo signals. By not modifying a Head Related Transfer Function (HRTF) for one signal and equalizing the HRTF for the other signal, a flattened frequency response is produced with no tonal changes, but with a high degree of spatial accuracy. Resultant output signals may be used to generate binaural signals or can be fed into crosstalk cancellers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.