Invention Grant
- Patent Title: Apparatus and method for generating a bandwidth extended signal
- Patent Title (中): 用于产生带宽扩展信号的装置和方法
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Application No.: US13004314Application Date: 2011-01-11
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Publication No.: US08880410B2Publication Date: 2014-11-04
- Inventor: Frederik Nagel , Sascha Disch , Max Neuendorf , Stefan Bayer , Marc Gayer , Markus Lohwasser , Nikolaus Rettelbach , Ulrich Kraemer
- Applicant: Frederik Nagel , Sascha Disch , Max Neuendorf , Stefan Bayer , Marc Gayer , Markus Lohwasser , Nikolaus Rettelbach , Ulrich Kraemer
- 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 A. Glenn
- Main IPC: G10L19/00
- IPC: G10L19/00 ; G10L21/038

Abstract:
An apparatus for generating a bandwidth extended signal from an input signal includes a patch generator and a combiner. The input signal is represented for first and second bands by first and second resolution data, respectively, the second resolution being lower than the first. The patch generator generates first and second patches from the first band of the input signal according to first and second patching algorithms, respectively. A spectral density of the second patch generated using the second patching algorithm is higher than a spectral density of a first patch generated using the first patching algorithm. The combiner combines both patches and the first band of the input signal to obtain the bandwidth extended signal. The apparatus scales the input signal according to the first and second patching algorithms or scales the first and second patches, so that the bandwidth extended signal fulfills a spectral envelope criterion.
Public/Granted literature
- US20110216918A1 Apparatus and Method for Generating a Bandwidth Extended Signal Public/Granted day:2011-09-08
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