记住对于选择正确的滤波器系数，采样频率很重要。
Remember that the sample rate is very important to choosing the right coefficients.
并推导出在全并行处理时滤波器系数所需满足的条件。
The condition on filter coefficients for fully parallel processing is derived.
利用这些公式，我们可以以二次型形式直接优化原型滤波器系数。
Using these formulae, we can, directly, optimize the prototype filter coefficients in a quadratic form.
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