ADAU1452 SigmaStudio IIR filter table gen

SigmaDSP & SigmaStudio takumi3952 Mar 27, 2018 00:00 4 replies Original on forum ↗

ICs: ADAU1452

takumi3952 Question

Mar 27, 2018 00:00

Hello,

I set coefficients directly for the IIR filter, but I can not set it well.

I loaded the coefficient value entered in the text in advance by "Load" button, but the setting did not go well.

Please see the attached file.

How can the coefficients load correctly?

Thanks and Regards,

Audio Signal Processors

adau1452

SigmaDSP Audio Processors

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DaveThib Reply

Mar 27, 2018 00:00

Hello takumi3952,

Sorry, I cannot read the screenshot very well. The resolution is poor. Can you attach the SigmaStudio project and then put up the individual screenshots?

Which DSP are you using?

Dave T

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ADIApproved Reply

Mar 27, 2018 00:00

HI Takumi:

If I'm not mistaken you need to change the sign for a1 and a2, the graph will match what's shown by the filter designer.

Please comment.

Miguel

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takumi3952 Reply

Mar 29, 2018 00:00

Hi,

I'm sorry it is unclear.

I attached the project file and the filter coefficient file.

c038b6e92a5ccbb62ea3e357b64ce701.png-356x248.png

052900d93a9a175d8209d2bbe59eed5e.png-465x325.png

b0d7a5c166a8b99117966f6a36e21fa4.png-382x198.png