ADAU1761 RMS detector problem
Hello,
I have found what I believe is an issue with the RMS Table. It works as expected until it's input level drops below ~-75dBFS. Below this level the table appears to wrap and does not produce the expected values.
Is this a known bug/feature?
Ian.
Audio Signal Processors
rmstable
sigmastudio
SigmaDSP Audio Processors
adau1761
Ian,
I am not able to re-create your problem here. I set up a simple test in SigmaStudio taking the output of a tone generator and passing that through a volume control set for 3 dB steps, and then through the rms table and into a readback block (image below).
In my table I used the following 33 values:
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
1
1
1
1
1
1
1
As I incremented through the table in 3 dB steps at the low end I saw the value I was reading back move up/down by 0.1 at each step. If you are still having this problem could you either attach an example project or further explain your setup that is causing you to see this issue? Thanks.
Hi JeradL,
I'll send you a project file that exhibits the problem.
Regards
Ian.
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