Apparatus, method and computer program for generating a representation of a Signal bandwidth Expanded based on the representation of an input Signal using a combination of an extension of Harmonic and wide bandwidth

摘要

An apparatus for generating a representation of a Signal bandwidth is expanded in the basis of Representation of an input Signal comprises a phase vocoder to obtain a set of values in the Spectral representation of a First Patch Wide Band AMP Up on the basis of the representation of the input Signal.The Apparatus also includes a Copier copy values configured for a range of values in the Spectral representation of the first Patch, values are provided by the phase vocoder to obtain values of the Spectral Domain representation of a Second pa Rche, where the second patch is associated with higher frequencies the first Patch.The Apparatus is configured to obtain the representation of the signal bandwidth is Expanded using the values of the Spectral representation of the first Patch and the values of the Spectral representation of the second Patch.