A device for a bandwidth extension of an audio signal, comprising: a signal spreader for generating a version of the audio signal as a time signal spread in time by a first spread factor of 2 to obtain a first spread signal; a further signal spreader implemented to spread the audio signal by a second spread factor of 3 to obtain a second spread signal; a decimator for decimating the first spread signal by a first decimation factor of 2 to obtain a first decimated audio signal; a further decimator implemented to decimate the second spread signal by a second decimation factor of 3 to obtain a second decimated audio signal; a filter (107, 109) for extracting a first bandpass signal from the first decimated audio signal, the first bandpass signal containing a frequency range which is between a maximum frequency of the audio signal and two times the maximum frequency of the audio signal, or for extracting a first bandpass signal from the audio signal before the generating by the signal spreader, wherein the first bandpass signal, after generating by the signal spreader and decimating by the decimator, has a frequency range which is between the maximum frequency of the audio signal and two times the maximum frequency of the audio signal, a filter for extracting a second bandpass signal from the second decimated signal containing a frequency range which is between two times the maximum frequency of the audio signal and three times the maximum frequency of the audio signal, or for extracting a second bandpass signal from the audio signal before the spreading by the further signal spreader, wherein the second bandpass signal, after spreading by the further signal spreader and decimating by the further decimator, has a frequency range which is between two times the maximum frequency of the audio signal and three times the maximum frequency of the audio signal; and a combiner for combining the first and second bandpass signals or the first and second decimated signals with the audio signal to obtain the combination signal extended in its bandwidth by a factor of 3; wherein the first and the second bandpass signals are distorted so that the first and the second bandpass signals comprise a predetermined envelope; or the first and the second decimated audio signals are distorted so that the first and the second decimated audio signals comprise a predetermined envelope; or the combination signal is distorted so that the combination signal comprises a predetermined envelope. a signal spreader for generating a version of the audio signal as a time signal spread in time by a first spread factor of 2 to obtain a first spread signal; a further signal spreader implemented to spread the audio signal by a second spread factor of 3 to obtain a second spread signal; a decimator for decimating the first spread signal by a first decimation factor of 2 to obtain a first decimated audio signal; a further decimator implemented to decimate the second spread signal by a second decimation factor of 3 to obtain a second decimated audio signal; a filter (107, 109) for extracting a first bandpass signal from the first decimated audio signal, the first bandpass signal containing a frequency range which is between a maximum frequency of the audio signal and two times the maximum frequency of the audio signal, or for extracting a first bandpass signal from the audio signal before the generating by the signal spreader, wherein the first bandpass signal, after generating by the signal spreader and decimating by the decimator, has a frequency range which is between the maximum frequency of the audio signal and two times the maximum frequency of the audio signal, a filter for extracting a second bandpass signal from the second decimated signal containing a frequency range which is between two times the maximum frequency of the audio signal and three times the maximum frequency of the audio signal, or for extracting a second bandpass signal from the audio signal before the spreading by the further signal spreader, wherein the second bandpass signal, after spreading by the further signal spreader and decimating by the further decimator, has a frequency range which is between two times the maximum frequency of the audio signal and three times the maximum frequency of the audio signal; and a combiner for combining the first and second bandpass signals or the first and second decimated signals with the audio signal to obtain the combination signal extended in its bandwidth by a factor of 3; wherein the first and the second bandpass signals are distorted so that the first and the second bandpass signals comprise a predetermined envelope; or the first and the second decimated audio signals are distorted so that the first and the second decimated audio signals comprise a predetermined envelope; or the combination signal is distorted so that the combination signal comprises a predetermined envelope.