Allocation, by sub-bands, of bits for quantifying spatial information parameters for parametric encoding
US9263050B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2012 |
| Grant date | Feb 16, 2016 |
| Priority date | — |
| Expiry date | Oct 6, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/0204
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method is provided for allocating bits for quantifying spatial information parameters by frequency sub-band for parametric encoding/decoding of a multichannel audio stream representative of a soundstage consisting of a plurality of sound sources. The method includes a step of quantifying or inversely quantifying, by frequency sub-band, spatial information parameters for the sound sources of the soundscape. The method further includes: assessing a spatial resolution of the current sub-band on the basis of the spectral properties of the sub-band; and determining a number of bits to be allocated to the current sub-band, the number of bits to be allocated being inversely proportional to the estimated spatial resolution. Also provided is a device for allocating quantification bits implementing the above-described method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.