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http://dx.doi.org/10.5573/ieek.2013.50.1.086

Research on Open Source Encoding Technology for MPEG Unified Speech and Audio Coding  

Song, Jeongook (School of Electrical and Electronic Engineering, Yonsei University)
Lee, Joonil (LG electronic Inc.)
Kang, Hong-Goo (School of Electrical and Electronic Engineering, Yonsei University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.50, no.1, 2013 , pp. 86-96 More about this Journal
Abstract
Unified Speech and Audio Coding (USAC) is the speech/audio codec with the best quality, approved on Final Draft International Standard (FDIS) at MPEG meeting in 2011. Since MPEG conventionally standardizes only the decoder, it is not easy to study on the encoder technologies. Furthermore, Reference Model(RM) shows extremely poor performance. To solve these problems, the open source project(JAME) proposes the methods to make the improved performance of main encoder technologies in USAC. Especially, this paper introduces the encoder modules: the signal classifier for selective operation between two coders, the psychoacoustic model in frequency domain, and window transition technology. Finally, the results of verification test for FDIS and the performance of Common Encoder are appended.
Keywords
Unified Speech and Audio Coding(USAC); USAC Common Encoder (JAME);
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  • Reference
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