Patent ID: 11935551
Assignee: DOLBY INTERNATIONAL AB
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 10:
11. A method for decoding an audio signal, the method comprising:
decoding a low frequency component of the audio signal;
providing a plurality of analysis subband signals of the low frequency component of the audio signal;
receiving information associated with a fundamental frequency Ω of the audio signal;
selecting, in response to the information, a first analysis subband signal and a second analysis subband signal from the plurality of analysis subband signals;
generating a synthesis subband signal from the first analysis subband signal and the second analysis subband signal, wherein a magnitude of the synthesis subband signal is based on a gain adjusted mean value of magnitudes of the first and second analysis subband signals, and a phase of the synthesis subband signal is based on a weighted sum of phases of the first and second analysis subband signals; and
generating a high frequency component of the audio signal from the synthesis subband signal;
wherein the information associated with the fundamental frequency Ω of the audio signal is received in an encoded bit stream.