Open AccessImproved Channel Level Difference Quantization for Spatial Audio Coding
Author(s) -
Kim Kwangki,
Beack Seungkwon,
Seo Jeongil,
Jang Daeyoung,
Hahn Minsoo
Publication year - 2007
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.07.0206.0149
Subject(s) - quantization (signal processing) , computer science , coding (social sciences) , algorithm , speech recognition , electronic engineering , mathematics , engineering , statistics
The channel level difference (CLD) is a main parameter in the reference model 0 (RM0) for MPEG Surround. Nevertheless, the CLD quantization method in the RM0 has problems such as the lack of theoretical background and inappropriate quantization levels. In this letter, a new CLD quantization method is proposed based on the virtual source location information which has strength in the quantization process. From experimental results, it is confirmed that the proposed scheme greatly reduces the quantization distortions measured in dB and degrees without any additional complexity.