DANG Chen, DAI Kui, WANG Shu-feng, et al. The Research and Implementation of SBR High Frequency Reconstruction Technology[J]. Acta Electronica Sinica, 2004, 32(S1): 192-195.
DANG Chen, DAI Kui, WANG Shu-feng, et al. The Research and Implementation of SBR High Frequency Reconstruction Technology[J]. Acta Electronica Sinica, 2004, 32(S1): 192-195.DOI：
Advanced Audio Coding (AAC) is the standard audio coding specification of MPEG-4.As description of AAC audio coding
the high frequency part of audio is always omitted
and only the low frequency part of audio will be coded to enhance the audio compression efficiency.The high frequency reconstruction technology plays an important role in the AAC decoder design to improve the output audio quality.This paper discusses the basic principles of high frequency reconstruction based on spectral bandwidth replication (SBR) technology.The implementation of an AAC decoder with SBR is presented in this paper.Some evaluation results of the implementation show its efficiency of audio decoding.
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