基于浮点DSP的快速傅里叶变换实现

Implementation of Fast Fourier Transform Based on Floating-point DSP

论述了采用浮点数字信号处理(DSP)芯片TMS320VC33实现快速傅里叶变换(FFT)。分别采用了C语言和汇编语言实现FFT算法。实验结果验证了汇编语言比C语言更适合实现复杂算法,也验证了实现算法的正确性,表明了利用DSP控制器特有的反序间接寻址FFT的实现是很方便的,且实时性非常好。

It is described that Fast Fourier Transform （FFT） implementation in floating - point DSP TMS320VC33. FFT algorithms are respectively implemented by C language and assemble language. The result verifies that assemble language is more suitable for imple- menting the complicated algorithms than C language,validates the correctness of FFT algorithms,indicates that the implement of FFT with DSP own antitone indirect addressing is very convenient, the real - time performance is also very good.