It is then subject to such mathematical indignities as wavelet decomposition, multi-resolution Fourier analysis, polyphase filtering and discrete cosine transformation.
接下来它还要经过一些数学处理程序，比如小波分解，多重分辨率傅立叶分析，多相过滤，离散余弦变换等。
A method of using fast Fourier transformation (FFT) to calculate the frequency characteristics of discrete mathematical model is introduced.
介绍了利用快速富里叶变换(FFT)计算离散数学模型频率特性的方法。
A method of using fast Fourier transformation (FFT) to calculate the frequency characteristics of discrete mathematical model is introduced.
介绍了利用快速富里叶变换(FFT)计算离散数学模型频率特性的方法。
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