Load IIR Coefficients from REW

SigmaDSP & SigmaStudio ssashton Dec 28, 2019 00:00 3 replies Original on forum ↗

ssashton Question

Dec 28, 2019 00:00

Hi,

I'm totally new to using SigmaStudio, trying to build a speaker crossover with the ADAU1452.

I've added some 2nd-order 'General EQ' filters and tried to load coefficiants generated in REW (Room EQ Wizard). However it seems to be unstable and output no sound.

Can anyone help me understand what I need to do to get this working?

If I need to convert the format, what do I need to do?

Thanks!

Audio Signal Processors

adau1452

SigmaDSP Audio Processors

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ssashton Reply

Dec 28, 2019 00:00

P.S. I am exporting the coefficients from REW with the MiniDSP 2x4 option which is based on the ADAU1701. I was hoping it would be compatible.

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ssashton Reply

Dec 28, 2019 00:00

Sorted, all I had to do was invert the signs on a1 and a2.

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DaveThib Reply

Jan 6, 2020 00:00

Hello ssashton,

Great! Glad you found it. There is a lot on the forum about how to convert filter coefficients to the proper format and there is also some info on the Wiki help files.

It looks like it did not take you too long to figure it out. How is the project going now?

Dave T

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