3D FFT in C#/WPF

Question

Hello there~

I need a 3D library for C#/WPF in order to draw a 3D FFT graph.

If you look at the 3D SPECTROGRAM in this link: http://www.vlf.it/fft_beginners/fft_beginners.html which is exactly I want.

It would be a great help if you please tell me a solution.

Thanks a lot.