傅里叶分析是将声音分解为正弦波的数学方法。

Fourier analysis is the mathematical method used to break sounds down into sine waves.

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通过比较傅里叶分析和小波分析中能量守恒公式，提出了小波能量谱的概念。

The conception of wavelet energy spectrum (WES) is posed by comparing the conservation of total energy in harmonic analysis, power spectrum analysis and wavelet transform.

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与傅里叶分析中使用的无限重复的正弦波不同，小波常常是不规则的和非对称的，随着离中心点越来越远，其数值逐渐靠近零。

Unlike the sinusoidal, endlessly repeating waves used in Fourier analysis, wavelets are often irregular and asymmetric, with values that die out to zero as they move farther from a central point.

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