1. An apparatus for generating a representation of a bandwidth-extended signal on the basis of an input signal representation, the apparatus comprising: a phase vocoder configured to acquire values of a spectral domain representation of a first patch of the bandwidth-extended signal on the basis of the input signal representation; and a value copier configured to copy a set of values of the spectral domain representation of the first patch, which values are provided by the phase vocoder, to acquire a set of values of a spectral domain representation of a second patch, wherein the second patch is associated with higher frequencies than the first patch; wherein the apparatus is configured to acquire the representation of the bandwidth-extended signal using the values of the spectral domain representation of the first patch and the values of the spectral domain representation of the second patch; and wherein the apparatus is implemented using a hardware apparatus, or using a computer, or using a combination of a hardware apparatus and a computer.