Spectral Fluctuation Analysis for Audio Compression Using Adaptive Wavelet Decomposition

被引：0
|
作者：
Gunasekaran, S. [1 ]
Revathy, K. [1 ]
机构：
[1] Univ Kerala, Dept Comp Sci, Trivandrum 695001, Kerala, India
来源：
INFORMATION PROCESSING AND MANAGEMENT | 2010年 / 70卷
关键词：
EBU-SQAM: European Broadcasting Union - Sound Quality Assessment Material; NMR: Noise-to-Masking Ratio; WFB: Wavelet Filter Bank; STFT: Short-Term Fourier Transform;
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper discusses the design and implementation of a spectral fluctuation analysis based lossy audio coding scheme. We present a simple lossy audio codec, composed of an adaptive wavelet decomposition filter, a modified psycho-acoustic model, an intra-channel de-correlation block followed by quantization and coding block. The intra-channel de-correlation block does the spectral fluctuation analysis to find the successive frames found to be similar and de-correlates it and codes. A Modified psychoacoustic model with simplified masking model was designed to fit this system. The evaluation of the system was clone by using European Broadcasting Union Sound Quality Assessment Material (EBU-SQAM) stereo wave files. Experimental results show the compression ratios achieved and subjective quality evaluation report.
引用
收藏
页码：424 / 429
页数：6
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