DSP implementation of the 3GPP enhanced aacPlus decoder

Author

Shimada, Osamu ; Nomura, Toshiyuki ; Sugiyama, Akihiko ; Serizawa, Masahiro

Author_Institution

Lab. of Media & Inf. Res., NEC Corp., Japan

fYear

2006

fDate

7-11 Jan. 2006

Firstpage

277

Lastpage

278

Abstract

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.

Keywords

3G mobile communication; audio coding; computational complexity; decoding; digital signal processing chips; telecommunication terminals; 3GPP mobile terminals; 3rd generation partnership project; DSP implementation; MPEG-4 high efficiency advanced audio coding; aacPlus decoder; computational complexity; music download; stereo decoding capability; streaming services; Audio coding; Bit rate; Computational complexity; Costs; Decoding; Digital signal processing; MONOS devices; MPEG 4 Standard; Mobile computing; Music;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, 2006. ICCE '06. 2006 Digest of Technical Papers. International Conference on

Print_ISBN

0-7803-9459-3

Type

conf

DOI

10.1109/ICCE.2006.1598418

Filename

1598418