Räumliche Rauschfüllung in einem Mehrkanal-Codec
Anmelder: Dolby Laboratories Licensing Corporation 🇺🇸
Details
- Veröffentlichungs-Nr.
- EP4730326
- Anmeldetag
- 1. Dezember 2021
- Veröffentlichung
- 22. April 2026
- Rechtsraum
- EP
- IPC
- G10L21/0208, G10L19/008G10L19/008
Abstract
Embodiments are disclosed for spatial noise filling in multi-channel codecs. In an embodiment, a method of regenerating background noise ambience in a multi-channel codec by generating spatial hole filling noise comprises: computing noise estimates based on a primary downmix channel generated from an input audio signal representing a spatial audio scene with background noise ambience; computing spectral shaping filter coefficients based on the noise estimates; spectrally shaping the multi-channel noise signal using the spectral shaping filter coefficients and a noise distribution, the spectral shaping resulting in a diffused, multi-channel noise signal with uncorrelated channels; spatially shaping the diffused, uncorrelated multi-channel noise signal with uncorrelated channels based on a noise ambience of the spatial audio scene; and adding the spatially and spectrally shaped multi-channel noise to a multi-channel codec output to synthesize the background noise ambience of the spatial audio scene.
Anmelder
- Firma
- Dolby Laboratories Licensing Corporation
- Land
- 🇺🇸 USA
Dolby Laboratories ist ein US-amerikanisches Unternehmen mit Sitz in San Francisco, das Audio- und Bildtechnologien sowie zugehörige Lizenzverfahren für Kino, Rundfunk und Unterhaltungselektronik entwickelt.
1.679 Patente in unserer Datenbank