Equipment and methods for generating advanced audio signals from input audio signals, audio signal processing systems and methods

Abstract

The invention relates to a device and method for generating an enhanced audio signal from an input audio signal, and a system and method for processing audio signals. The Thict is generated by an enhancement signal from the input signal (600), in which the enhancement signal has spectral values ​​for the enhancement spectrum region, spectral values ​​for enhancement spectrum regions not in the input signal (600), including the mapping (602) to map the source spectral region of the input signal to the target region in the enhancement spectrum region, the source spectrum region includes the noise-filled region (302); and the noise fill (604) is configured to generate the first noise fill values ​​for the noise fill region (302) in the source spectral region of the input signal and to generate the second noise values ​​for the noise region in the target region, where the second noise values ​​are decorrelated from the first noise values ​​or to generate the second noise values ​​for the noise region in the target region, In this process, the second noise values ​​are correlated from the first noise values ​​in the source region.