Apparatus for generating a wideband signal using a lowband input signal and a first parameter set describing the frequency content above a maximum frequency of the lowband input signal and up to a first frequency, wherein parameters describing a frequency content above the first frequency are not included in the first parameter set, comprising: a processor for performing a parametric bandwidth extension operation using the lowband input signal and the first parameter set to generate a first frequency content extending up to the first frequency, and for performing a blind bandwidth extension operation using the first frequency content and a second parameter set to generate a second frequency content extending up to a second frequency being higher than the first frequency, wherein the processor is configured to extract the first parameter set and the lowband input signal from a bitstream; perform (51, 52) the parametric bandwidth extension using a patch of the lowband input signal and the first parameter set comprising shaping using the first parameter set to obtain a first shaped signal, wherein the patching generates the first frequency content; and performing (54, 55) the blind bandwidth extension using a patching of the first shaped signal and the second parameter set, wherein the patching of the first shaped signal generates the second frequency content, wherein the processor comprises a parameter generator for generating the second parameter set from the first frequency content, wherein the parameter generator is configured to derive spectral envelope parameters for the second parameter set for the second frequency content by an extrapolation from lower to higher frequencies of energy information of a shaped spectral envelope of the first frequency content. a processor for performing a parametric bandwidth extension operation using the lowband input signal and the first parameter set to generate a first frequency content extending up to the first frequency, and for performing a blind bandwidth extension operation using the first frequency content and a second parameter set to generate a second frequency content extending up to a second frequency being higher than the first frequency, wherein the processor is configured to extract the first parameter set and the lowband input signal from a bitstream; perform (51, 52) the parametric bandwidth extension using a patch of the lowband input signal and the first parameter set comprising shaping using the first parameter set to obtain a first shaped signal, wherein the patching generates the first frequency content; and performing (54, 55) the blind bandwidth extension using a patching of the first shaped signal and the second parameter set, wherein the patching of the first shaped signal generates the second frequency content, wherein the processor comprises a parameter generator for generating the second parameter set from the first frequency content, wherein the parameter generator is configured to derive spectral envelope parameters for the second parameter set for the second frequency content by an extrapolation from lower to higher frequencies of energy information of a shaped spectral envelope of the first frequency content.