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How to set BIAS DC on analog output for ADAU1442X evaluation board?

Question asked by A2R on Feb 5, 2018
Latest reply on Feb 9, 2018 by DaveThib

I have a Piezo-stack amplifier that needs a DC bias on the input sound signal. Input ranges 0-1V, 0-2.5V or 0-10V. Adding a DC to the sound signal in Sigmastudio only last for a short time (DC decay after setting). 
Is there a way to have the output DC-coupled? Is there a good way to add a DC on the signal with an external voltage source?

I use one of the 12 Audio Output channels, see below.


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