The signal is distorted, similar to the blue response curve, when the volume is low using the General (2nd-Order / Lookup) filter on the ADAU1452. With other filters, this issue does not occur. I also tested it on the ADAU1401 and did not encounter this phenomenon. I’m not sure if my IC is faulty.
Edit the title to accurately reflect the issue encountered.
[edited by: DaNhanCach at 4:46 PM (GMT -4) on 30 May 2025]