Invention Grant
- Patent Title: Apparatus and method for encoding or decoding audio signal with intelligent gap filling in the spectral domain
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Application No.: US15834260Application Date: 2017-12-07
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Publication No.: US10311892B2Publication Date: 2019-06-04
- Inventor: Sascha Disch , Frederik Nagel , Ralf Geiger , Balaji Nagendran Thoshkahna , Konstantin Schmidt , Stefan Bayer , Christian Neukam , Bernd Edler , Christian Helmrich
- Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- Applicant Address: DE Munich
- Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- Current Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- Current Assignee Address: DE Munich
- Agency: Perkins Coie LLP
- Agent Michael Glenn
- Priority: EP13177346 20130722; EP13177348 20130722; EP13177350 20130722; EP13177353 20130722; EP13189362 20131018
- Main IPC: G10L19/00
- IPC: G10L19/00 ; G10L21/0388 ; G10L19/008 ; G10L19/025 ; G10L19/03 ; G10L19/02 ; G10L19/022 ; G10L19/032 ; G10L19/06 ; G10L25/06 ; H04S1/00
Abstract:
An apparatus for decoding an encoded audio signal, includes a spectral domain audio decoder for generating a first decoded representation of a first set of first spectral portions, the decoded representation having a first spectral resolution; a parametric decoder for generating a second decoded representation of a second set of second spectral portions having a second spectral resolution being lower than the first spectral resolution; a frequency regenerator for regenerating every constructed second spectral portion having the first spectral resolution using a first spectral portion and spectral envelope information for the second spectral portion; and a spectrum time converter for converting the first decoded representation and the reconstructed second spectral portion into a time representation.
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