采用FFT和IFFT的快速卷积的C程序实现源代码。-FFT and IFFT fast convolution C program source code.

一個音樂分頻程式，以c++寫成。內含一個將音樂轉成純數字的源碼，一個分頻源碼(用FFT的overlap-and-add技術寫成)，一個把不同頻率加起來的源碼(確認分頻正確)。-A filter bank using FFT overlap-and-add with a transformer that transfer the wav file into txt file and a checker that ensure the filter is correct.