摘要：本文简要地论述了FFT和多相位DFT滤波器组在响应方面的差异.一般而言,多相位DFT(甚至包括任何滤波器组,比如PFT)在稳态条件下有着很好的相邻信道抑制性能,而瞬态响应却很糟糕.这符合了滤波器冲激响应结论.通过对一个典型的1024子带滤波器组研究的简单例子说明这些不同点.
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