Phase Issue SigmaStudio ADAU1466 Toolbox>DyanamicProcessors>Multiband Compressor>Single Precision>RMS (4Band)

SigmaDSP & SigmaStudio H.Fukushima Feb 7, 2019 00:00 1 replies Original on forum ↗

ICs: ADAU1466

H.Fukushima Question

Feb 7, 2019 00:00

Hi ,

I'm now working on ADAU1466 with SigmaStudio4.2

I met an issue using Mutilband Compressor with 2nd order filter alignment.

I could not found any PHASE INVERT option in filter configurations

HPF/LPF 2nd Order Linkwitz-Liely filter crossover need to invert one to much the output signals phases.

But there's no options found.

How can I invert the phase(s) to get a flat frequency responces?

Best Regards,

HILO

Audio Signal Processors

SigmaDSP Audio Processors

adau1466

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DaveThib Reply

Feb 8, 2019 00:00

Hello Hilo,

I see what you are asking for. I looked into this cell and it appears that they already are inverted but I am only using the visual tools and not an external analyzer. There should be a control for inversion since if you switch to a Butterworth you would not want the inversion. So there are some issues with this cell that I need to discuss with the programmers. I also noticed that it is very wasteful of memory.

I did look for a work-around to be able to manually change the phase but I am not certain if I found the correct parameter so I will not share it now.

Thank you for pointing this out.

Dave T

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