DocumentCode :
239722
Title :
Fixed-point implementation of MPEG-D unified speech and audio coding decoder
Author :
Eunwoo Song ; Hong-Goo Kang ; Joonil Lee
Author_Institution :
Digital Signal Process. Lab., Yonsei Univ., Seoul, South Korea
fYear :
2014
fDate :
20-23 Aug. 2014
Firstpage :
110
Lastpage :
113
Abstract :
This paper describes a fixed-point implementation method of the unified speech and audio coding (USAC) decoder that has been recently standardized by moving picture experts group (MPEG). Since the structure of USAC is too complicated to support both speech and audio signals, the quality and complexity issues must be carefully reviewed while performing fixed-point implementation. By analyzing the structure of the USAC decoder, this paper describes key ideas to successfully realize the fixed-point system. Subjective and objective test results verify that the implemented fixed-point decoder shows equivalent quality to the floating-point decoder. The average and worst cases of complexity depending on the type of encoding modes are also given in detail.
Keywords :
audio coding; decoding; fixed point arithmetic; speech coding; MPEG-D unified speech and audio coding decoder; USAC decoder; audio signals; encoding modes; fixed-point decoder; fixed-point system; floating-point decoder; moving picture experts group; objective test; speech signals; subjective test; Audio coding; Complexity theory; Decoding; Digital signal processing; Speech; Speech coding; Transform coding; Unified speech and audio coding (USAC); audio coding; fixed-point implementation; speech coding;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Digital Signal Processing (DSP), 2014 19th International Conference on
Conference_Location :
Hong Kong
Type :
conf
DOI :
10.1109/ICDSP.2014.6900810
Filename :
6900810
Link To Document :
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