How to apply PEQ by using Safeload in ADAU1452

SigmaDSP & SigmaStudio Eric_Kang May 23, 2017 00:00 1 replies Original on forum ↗

Eric_Kang Question

May 23, 2017 00:00

Hi All,

I have a question for PEQ calculation in ADAU1452.

Firstly I refered the below contents for Software Safeload and the PEQ calculation.
- Software Safeload in ADAU1452 Datasheet
.
.
- Write safeload to control Medium Size EQ
. https://ez.analog.com/message/152041

In the upper contents, we can see the method how to calculate the Parameter Value (Coefficient) like as below.
But the calculation method and the safeload varialbe values are not matched.

Could you tell me how to be applied the calculation and the safeload register?

- Coefficient Equation
.

- Parameter value to be output in the Capture Window
.

Best Regards,
Eric.

Audio Signal Processors

adau1452

SigmaDSP Audio Processors

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DaveThib Reply

May 23, 2017 00:00

Hello Eric,

I think the confusion here may be that the DSP uses five coefficients instead of 6. We normalize A0 to equal 1 so that it does not need to be transmitted and stored. So adjust your equations so that A0=1 and it should work.

Dave T

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