Multi-channel subband spatial processing for loudspeakers
US10764704B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 22, 2018 |
| Grant date | Sep 1, 2020 |
| Priority date | — |
| Expiry date | Jun 13, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S2420/07
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An audio system processes a multi-channel surround sound input audio signal into a stereo signal for left and right speakers, while preserving the spatial sense of the sound field of the input audio signal. A subband spatial processing is performed on a left input channel, a right input channel, a left peripheral input channel, and a right peripheral input channel of the input signal to create spatially enhanced channels. Binaural filters may be applied to the peripheral input channels or the spatially enhanced channels. Crosstalk cancellation is performed on the spatially enhanced channels to create a left crosstalk cancelled channel and a right crosstalk cancelled channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.