Cylindrical microphone array for efficient recording of 3D sound fields
US10492000B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 8, 2016 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | May 20, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S2420/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided are methods, systems, and apparatuses for recording a three-dimensional (3D) sound field using a vertically-oriented cylindrical array with multiple circular arrays at different heights. The design of the cylindrical array is well-suited to providing a high-resolution in azimuth and a reduced resolution in elevation, and offers improved performance over existing 3D sound reproduction systems. The methods, systems, and apparatuses provide a larger vertical aperture than horizontal aperture, as opposed to a spherical array, which has the same aperture for all dimensions, and further provides an alternative format to mixed-order spherical decomposition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.