Method for realizing virtual multi-channel output by spectrum analysis
US7243073B2 · kind B2 · utility
9Cited by
2References
7Claims
0Family size
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Key dates
| Filing date | Aug 13, 2003 |
| Grant date | Jul 10, 2007 |
| Priority date | — |
| Expiry date | Feb 15, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S5/005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for realizing virtual multi-channel by spectrum analysis is disclosed. The low-frequency-effect sound data is obtained by averaging sound data of left and right channels in the two-channel sound source and filtering the average by a first low pass filter. The central channel sound data is obtained by averaging sound data of the left and the right channels in the two-channel sound source and filtering the average by a second low pass filter. The surround right and left sound data is obtained by copying sound data of the left and the right channels in the two-channel sound source, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.