NOISE FILLER, NOISE FILLING PARAMETER CALCULATOR, METHOD FOR PROVIDING A NOISE FILLING PARAMETER, METHOD FOR PROVIDING A NOISE-FILLED SPECTRAL REPRESENTATION OF AN AUDIO SIGNAL, CORRESPONDING COMPUTER PROGRAM AND ENCODED AUDIO SIGNAL

摘要

A noise filler for providing a noise-filled spectral representation of anaudio signal on the basis of an input spectralrepresentation of the audio signal comprises a spectral region identifierconfigured to identify spectral regions of the input spectralrepresentation spaced from non-zero spectral regions of the input spectralrepresentation by at least one intermediate spectralre-gion, to obtain identified spectral regions, and a noise inserterconfigured to selectively introduce noise into the identified spectralregions to obtain the noise-filled spectral representation of the audiosignal. A noise filling parameter calculator for providing anoise filling parameter on the basis of a quantized spectral representation ofan audio signal comprises a spectral region identifier,as mentioned above, and a noise value calculator configured to selectivelyconsider quantization errors of the identified spectralregions for a calculation of the noise filling parameter. Accordingly, anencoded audio signal representation representing the audiosignal can be obtained.