Microphone array for preserving soundfield perceptual cues
US7149315B2 · kind B2 · utility
7Cited by
5References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2004 |
| Grant date | Dec 12, 2006 |
| Priority date | — |
| Expiry date | Oct 20, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S3/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A sound-capturing arrangement uses a set of directional microphones that lie approximately on a sphere having a diameter of 0.9 ms sound travel, which approximates the inter-aural time delay. Advantageously, one directional microphone points upward, one directional microphone points downward, and the odd number of microphones are arranged relatively evenly in the horizontal plane. On one embodiment, the signals from the microphones that point upward and downward are combined with the signals of the horizontal microphones before the signals of the horizontal microphones are transmitted or recorded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.