High-quality audio-coding at less than 64 kbit/s by using transform-domain weighted interleave vector quantization (TwinVQ)
High-quality audio-coding at less than 64 kbit/s by using transform-domain weighted interleave vector quantization (TwinVQ)
复制标题
使用变换域加权交错矢量量化 (TwinVQ) 以低于 64 kbit/s 的速度进行高质量音频编码
DOI：
10.1109/icassp.1995.479500
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
S. Miki
中科院分区：
文献类型：
--
作者：
N. Iwakami;T. Moriya;S. Miki
提出了一种新的音频编码方法。这种方法被称为变换域加权交织矢量量化(TwinVQ)，在小于kbit/S的情况下实现了高质量的再现。该方法是一种使用修正离散余弦变换的变换编码。该方法有三种新技术：通过线性预测编码(LPC)系数谱平坦化MDCT系数；平坦化MDCT系数的帧间反向预测；以及加权交织矢量量化。主观评价测试表明，在相同的比特率下，TwinVQ的再现质量超过了MPEGLayer II编码器。
A new audio-coding method is proposed. This method is called transform-domain weighted interleave vector quantization (TwinVQ) and achieves high-quality reproduction at less than 64 kbit/s. The method is a transform coding using modified discrete cosine transform (MDCT). There are three novel techniques in this method: flattening of the MDCT coefficients by the spectrum of linear predictive coding (LPC) coefficients; interframe backward prediction for flattening the MDCT coefficients; and weighted interleave vector quantization. Subjective evaluation tests showed that the quality of the reproduction of TwinVQ exceeded that of an MPEG Layer II coder at the same bitrate.