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您在下面看到任何错误吗?
cfg = kiss_fftr_alloc(dim,1,NULL,NULL); kiss_fftr(cfg,in,out);
是否等于:?
cfg = fftw_plan_dft_c2r_1d(dim, in, out, FFTW_ESTIMATE); fftw_execute(cfg);
看起来非常接近,除了 Kiss_fft_scalar 的默认类型是“float”,而 fftw_* 函数基于“double”。