Marc Grissom

I'm using PEACE to set the EQ configs and it's set to biquad. Does EQ APO/ PEACE ignore filters with a gain set to 0? Or should I manually disable them? I think the latency issue is mostly fixed after adjusting some other settings. The very first time I booted up the game with the EQ active, overall performance was abnormally bad for some reason. Which may have been the main factor for the high latency

I installed Equalizer apo onto my new surface pro 11 (Intel) and for the first time ever, I noticed very high latency. Probably close to 80 ms extra. Can I configure EQAPO to better minimize latency? For example, do I need to install both premix and postmix? Would any of the other "install as" modes work better?

I think the developers would actually be happy to anwer questions about their DSP functionality on the RME forum. So I'll probably try that later.

Thanks Juha. That should be quite helpful if I decide I want a custom filter later.

I myself have always used a setting of 192k for my audio. So it's no issue for me. But whenever you see EQ presets posted online (like the Auto EQ project) no one ever mentions the sample rate. So I'm sure there are some other users getting slightly worse EQ results because they left the their sample rate setting as the default. The ADI-2 DAC will accept any frequncy you throw at it. Interestingly, the built-in plotter doesn't respond to any change in sample rate. I wonder if it's using a different...

Thanks for sharing these links. But for my purposes, I need to use whatever methods EQ APO is using. Do you by chance know if there's other parametric EQ software out there using something other than the RBJ filters?

I looked at the EQ APO plotter and it does respond to the Windows system sample rate in the same way. When I first glanced at it, I thought it wasn't. So does this mean the way our programmed EQ filters sound can be affected (albeit slightly) by our sample rate setting? I'm wondering if the difference between 44k and 192k will start to matter when you have multiple filters set above 8k interacting with each other. Yesterday I was doing just that when I realized my plots (at fs=44k) looked different...

That's interesting. In my own calculations, sample rate does actually have an effect if your F0 frequncy is close to your SampleRate/2. Take a look at my attachement. The 3 curves are peaking filters at 18k, Q=1, dB=6. I'm using the exact same equations for calculation the Biquad coefficients. But maybe I'm evaluating the transfer function differently?