Patent ID: 8515768
Filing Date: 2013-08-20
Classification: G10L

Abstract:
1. A method of decoding an audio signal, the method comprising: receiving, in an audio decoder, core audio data associated with a core portion of an audio signal and extension data associated with an extended portion of the audio signal; decoding the core audio data to generate a decoded core audio signal in a time domain representation; generating a reconstructed extended portion of the audio signal in accordance with the extension data and the decoded core audio signal in the frequency domain; filtering, using a highpass filter, the reconstructed extended portion of the audio signal to generate a reconstructed output signal; transforming, using a filter bank, the reconstructed extended portion of the audio signal into a time domain representation; and combining the decoded core audio signal and the reconstructed output signal to generate a decoded output signal after the reconstructed extended portion of the audio signal is transformed into a time domain representation.