resonance via FFT Acoustics Determine resonance curve with white noise excitation using FFT rFT red rate frequency fftX fftY fft fft2500 FFTaverage sound_in run sound_in fftX fftY fftX fftY fft 0 2500 fft fft2500 run 1 fft2500 FFTaverage FFTaverage FFTaverage fft2500 run FFTaverage run 1 run 0 2500 2501 frequency frequency FFTaverage frequency fft2500 run frequency FFTaverage fft2500