基于FPGA的fft实现 摘要：本系统基于Altera Cyclone II 系列FPGA嵌入高性能的嵌入式IP核(Nios)处理器软核，代替传统DSP芯片或高性能单片机，实现了基于FFT的音频信号分析。-FPGA-based realization of the fft Abstract: This system is based on Altera Cyclone II family of embedded high-performance FPGA embedded IP core