Acoustic image creation system and program therefor
US8027494B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2004 |
| Grant date | Sep 27, 2011 |
| Priority date | — |
| Expiry date | Feb 2, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S1/002
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
With stereophonic sound images of multi-channel audio signals well maintained, 2-channel system audio signals are created. An acoustic image creation system includes: a left-rear localization processing means 2 for outputting a left-rear localization signal by summing together a left signal 101 and a left-rear signal 103, among audio input signals including the left signal 101, a right signal 102, the left-rear signal 103, and a right-rear signal 104, and processing the summation result with a rear localization processing filter; a right-rear localization processing means 3 for outputting a right-rear localization signal by summing together the right signal 102 and the right-rear signal 104, and processing the summation result with a rear localization processing filter; and an acoustic image creation means 4 for creating the surround sound image signals from the left signal 101, the right signal 102, the left-rear localization signal 103, and the right-rear localization signal 104.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.