This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ti c6678 fft问题

我想请问一下,我调用FFT函数DSPF_sp_fftSPxSP为什么结果和matlab的结果不一样?

1.是否是调用问题?

    我需要做的FFT是512点cos(pi*(i-1)/12.0),入口参数  实部为cos(pi*(i-1)/12.0),虚部为0.

   调用过程为 DSPF_sp_fftSPxSP (512, &input[0], &w[0], output, brev, 2, 0, 512)

2.DSPF_sp_fftSPxSP的输入参数是否也是复数形式实虚实虚的存放?

已经憋了好几天了,真的希望帮我解答一下,谢谢!