A method for generating a reconstructed audio signal having a baseband portion and a highband portion is disclosed. The method includes deformatting an encoded audio signal into a first part and a second part and obtaining a decoded baseband audio signal by decoding the first part. The method also includes extracting, from the second part, a noise parameter and an estimated spectral envelope of the highband portion and obtaining a plurality of subband signals by filtering the decoded baseband audio signal. The method further includes generating a high-frequency reconstructed signal by copying in a circular manner a number of consecutive subband signals of the plurality of subband signals and obtaining an envelope adjusted high-frequency signal by adjusting, based on the estimated spectral envelope of the highband portion, a spectral envelope of the high-frequency reconstructed signal. The method also includes generating a noise component based on the noise parameter and obtaining a combined high-frequency signal by adding the noise component to the envelope adjusted high-frequency signal. Finally, the method includes obtaining a time-domain reconstructed audio signal by combining the decoded baseband audio signal and the combined high-frequency signal. The method may be implemented by an audio decoding device comprising one or more hardware elements.