Method and system for processing an audio signal including ambisonic encoding
US11432092B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 17, 2018 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Jul 17, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S2420/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for processing a sound signal including synchronously acquiring an input sound signal Sinput by means of at least two omnidirectional microphones, encoding the input sound signal Sentréeinput in a sound data D format of the ambisonics type of order R, R being a natural number greater than or equal to one, the encoding step including a directivity optimisation sub-step carried out by means of filters of the Finite Impulse Response filter type. Each of the signals acquired by the microphones is filtered during the directivity optimisation sub-step by a FIR filter, then subtracted from an unfiltered version of each of the other signals in order to obtain N enhanced signals. The present invention also relates to a system for processing the sound signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.