Patent ID: 11875805
Assignee: DOLBY INTERNATIONAL AB
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A method for decoding an audio signal in an audio processing system, the method comprising:
receiving a first waveform-coded signal having a spectral content up to a first cross-over frequency;
receiving a second waveform-coded signal having spectral content corresponding to a subset of a frequency range above the first cross-over frequency;
receiving high frequency reconstruction parameters;
performing high frequency reconstruction using at least a portion of the first waveform-coded signal and the high frequency reconstruction parameters so as to generate a frequency extended signal having spectral content above the first cross-over frequency;
adjusting energy levels of subbands of the frequency extended signal based on a target energy levels for the subbands; and
interleaving the frequency extended signal with the second waveform-coded signal to generate an interleaved signal, such that spectral envelope energy levels for subbands of the interleaved signal corresponding to the target energy levels for the subbands.