Patent · US Active

Method for coding and decoding the wideness of a sound source in an audio scene

US8437868B2 · kind B2 · utility

5Cited by

0References

4Claims

0Family size

Assignee

Thomson Licensing · FR

Inventors

Jens Spille · Laatzen, DE
Jurgen Schmidt · Los Alamos, US

Key dates

Filing date	Oct 10, 2003
Grant date	May 7, 2013
Priority date	—
Expiry date	Nov 23, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH04S2420/03
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A parametric description describing the wideness of a non-point sound source is generated and linked with the audio signal of said sound source. A presentation of said non-point sound source by multiple decorrelated point sound sources at different positions is defined. Different diffuseness algorithms are applied for ensuring a decorrelation of the respective outputs. According to a further embodiment primitive shapes of several distributed uncorellated sound sources are defined, e.g. a box, a sphere and a cylinder. The width of a sound source can also be defined by an opening-angle relative to the listener. Furthermore, the primitive shapes can be combined to do more complex shapes.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.