频谱分析

最新推荐文章于 2025-05-22 14:24:27 发布

原创最新推荐文章于 2025-05-22 14:24:27 发布 · 579 阅读

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fftw_plan plan = fftw_plan_dft_r2c_1d(
						fftAnaSrcPoints,
						ppFFTSrcValue[k],
						ppFFTComplexDst[k], FFTW_ESTIMATE);
					if (NULL != plan)
					{
						fftw_execute(plan);
						fftw_destroy_plan(plan);

						for (int j = 0; j < fftAnaSrcPoints; j++)
						{
							double dAmp = sqrt(pow(ppFFTComplexDst[k][j][0], 2) + pow(ppFFTComplexDst[k][j][1], 2));
							ppFFTComplexDstAmp[k][j] = dAmp / (fftAnaSrcPoints / 2);
						}
						ppFFTComplexDstAmp[k][0] = 0;
					}