小波滤波器在音频压缩中的选择

1995 International Conference on Acoustics, Speech, and Signal Processing Pub Date : 1995-05-09 DOI:10.1109/ICASSP.1995.480413

P. Philippe, F. M. D. Saint-Martin, L. Mainard

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引用次数: 9

摘要

我们解决了选择最优小波包变换用于音频压缩的问题。我们提出了一种基于感知方法的比较方法，该方法为给定音频信号的“透明”编码提供了熵比特率。不同小波的测试得出结论，音频压缩最重要的合成标准是所谓的“编码增益”，而频率选择性、规则性和正交性似乎不太相关。

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On the choice of wavelet filters for audio compression

We address the issue of choosing an optimal wavelet packets transform for audio compression. We present a comparison method based on a perceptual approach, which provides an entropic bit-rate for "transparent" coding of a given audio signal. The test with different wavelets leads to the conclusion that the most significant synthesis criterion for audio compression is the so-called "coding gain", while frequency selectivity, regularity and orthogonality seem less relevant.

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来源期刊

1995 International Conference on Acoustics, Speech, and Signal Processing

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