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Enhancement of Super-wideband Coder by Considering Audio Feature in MDCT Domain  

Hong, Ki-Bong (Department of Radio Engineering, ChungBuk University)
Jeong, Gyu-Hyeok (LG Electronics)
Lee, In-Sung (Department of Radio Engineering, ChungBuk University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SP / v.48, no.5, 2011 , pp. 129-136 More about this Journal
Abstract
This paper presents the coding method that have multi-mode and efficiency of audio codecs using the feature of audio signal. Recently, the developed extension super-wideband codec based on G.718 wideband divides two mode between Generic and Sinusiodal. So codec efficently encode audio signal exist in super-wideband. But the codec is not as efficent coding for harmonic component of wind instrument and string instrument and individual-Line component of percussion instrument. The proposed method are modeling and encoding multiple pitch and individual-line feature using multi mode coding. For the performance evaluation, we used SNR in MDCT domain for objective test and MUSHRA test for subjective test. As a result, the performance of SNR and MUSHRA test of the proposed method have better performance than the G.718 super-wideband codec.
Keywords
Super-Wideband codec; MDCT domain; Multi-mode coder; Individual-Line; multi pitch;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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