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WdlResamplingSampleProvider applied Filter

Oct 23, 2015 at 1:26 PM
Edited Oct 23, 2015 at 1:58 PM
I want to compare DownSampling from NAudio with DownSampling in Matlab. For that I have to know what filter is applied and what would be the equalivent in Matlab. At the moment I use decimate function of Matlab for downsampling.

As far as I understand a IIR-Filter off order 4 (2*BiQuad) is applied. But when I use FIR of order 4 in matlab, the signals are not similiar as they should be.

The best result I got, was when doing the resampling with MediaFoundationResampler off quality 60 and a Chebyshev Type 1 off order 8 in Matlab. But there I have no Idea what kind off filter is applied in MediaFoundation.

Thx for helping me out.