DSP implementation of the 3GPP enhanced aacPlus decoder

This paper presents implementation of the 3GPP (the 3rd generation partnership project) enhanced aacPlus decoder on a 16-bit fixed-point DSP. Enhanced aacPlus is a 3GPP standard integrating newly standardized MPEG-4 parametric stereo (PS) into MPEG-4 high efficiency advanced audio coding (HE-AAC). P...

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Bibliographic Details
Main Authors: Shimada, O., Nomura, T., Sugiyama, A., Serizawa, M.
Format: Conference Proceeding
Language:English
Subjects:
Audio coding
Bit rate
Computational complexity
Costs
Decoding
Digital signal processing
Mobile computing
MONOS devices
MPEG 4 Standard
Music
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Summary:This paper presents implementation of the 3GPP (the 3rd generation partnership project) enhanced aacPlus decoder on a 16-bit fixed-point DSP. Enhanced aacPlus is a 3GPP standard integrating newly standardized MPEG-4 parametric stereo (PS) into MPEG-4 high efficiency advanced audio coding (HE-AAC). PS enables audio coding at a low bitrate for stereo signals by efficiently representing stereo information. The maximum number of operations for the implemented decoder is 29.3 million cycles per second for a 32 kb/s bitstream. This implementation with stereo decoding capability achieves higher sound quality than mono HE-AAC at the cost of 90% increase in computational complexity. 3GPP mobile terminals for music download and streaming services can be realized by using the implemented decoder.
ISSN:2158-3994
2158-4001
DOI:10.1109/ICCE.2006.1598418