Labview Filter design

[alanb]

 I am trying to design a filter to replicate the frequency weighting curves in ISO-2631-4.

These curves are specified (in third octace steps) between 0.1 and 400 hz

I have based my design on the "DFD least Pth Norm Design.vi"

I have created the band specification array but in my vi I do not appear to be getting anthing out of the "DFD Get Freq responce.vi"

Any thoughts

I quite new to filter design,  Am I using the right technique? If not how should I be implementing this filter?

Attached is my vi

Thanks

P.S. also postted this on the PXI messageboard in error

[LittleQ]

Hi, Actually, you use the design VI in the right way. The reason that you didn't see anything is that the DFD Get Freq Response VI need a "freq points" input. If you don't want to input the freq points array, you should use DFD Plot Freq Response VI. I attach the modified VI below, hope it helpful.