bluescale

Just keep in mind, if you want to use any of the BEQs that don't list S, you'll need to convert Q to S. I recommend Excel to do the grunt work. There's a bit of discussion about that earlier in this thread:

^^^ Ha! I don't know how I missed that.

Yes it is. Here's a link with an image from Logan the little bit of spoken word at the beginning and end removed:

Here you go: https://www.youtube.com/watch?v=k9IfHDi-2EA

If you'll recall, 3II3d00d, I had to come up with a slightly different formula for Excel to work correctly. I'm not sure why our experiences different, but here's what I finally settled on for S: S = (A^2*Q^2+Q^2)/(A^2*Q^2-2*A*Q^2+A+Q^2) For A I used what comes from the Audio EQ Cookbook: A = 10^(dBgain/40) More specifically, I set up a spreadsheet where you input the desired dB gain in cell B1 and the target Q value in B2. Then I have a formula for A in E1 and S in E2. Here's what those formulas look like: A: 10^(B1/40) S: (E1^2*B2^2+B2^2)/(E1^2*B2^2-2*E1*B2^2+E1+B2^2)

Sorry if this is seems like asking the obvious, but I want to make sure I understand correctly. You mean run a loopback measurement of the entire movie to see if the measurement matches what was posted in the graphs? I could do that. I suppose I was hoping for something that didn't take ~2 hours to verify. That, of course, assumes that this is easy for someone to verify my work. After I posted my question, I realized there is a quick way to do a sanity check. I took a look at a coupe of the more recent posts where maxmercy posted both S and Q. In both cases, if I plug his Q value into my Excel spreadsheet, my S and his match.

I'm finally going back and redoing my BEQ filters for JRiver by converting Q to S. I'd love it if someone could take a look at my calculations and make sure I've done the conversions correctly: LCR: 1. Gain -7dB 2. Low Shelf 25Hz, S 2.35, +6dB 3. Low Shelf 26Hz, S 2.35, +6dB 4. Low Shelf 27Hz, S 2.35, +6dB 5. Low Shelf 52Hz, S 0.51, +5dB LFE: 1. Gain -7dB 2. Low Shelf 18Hz, S 2.32, +6.5dB (3 filters for 19.5dB correction) 3. Low Shelf 36Hz, S 0.51, +5dB Surrounds: 1. Gain -7dB 2. Low Shelf 22Hz S 2.28, +7dB 3. Low Shelf 23Hz S 2.28, +7dB 4. Low Shelf 24Hz S 2.28, +7dB 5. Low Shelf 25Hz S 2.28, +7dB 6. Low Shelf 22Hz S 0.53, +8dB

Awesome. Now I have a reason to upgrade the MC22.

What do you consider an aggressive house curve. Is something based on the Harman curve aggressive? That's not my exact curve, but it's the general idea.

It looks like JRiver's 1.0 limitation for Q (or really S, but Q in the UI) means many of these BassEQ settings can't be properly implemented. I had previously created all of mine in JRiver 19, before they implemented notification that values over 1.0 are ignored. I've recently upgraded to JRiver 20, and while it imported my old BEQ filters, including ones with a Q>1, if I try to edit it, I get an error message notifying me of the problem. One of the best features in JRiver is how easily it allowed me to implement BEQ. This is a blow.

Excel barked at that formula for S. There was an extra parenthesis, and for the life of me, I couldn't get it to result in ~1.7. Here's what I came up with: S = (A^2*Q^2+Q^2)/(A^2*Q^2-2*A*Q^2+A+Q^2) It comes back with a value of ~1.7, so it matches what you found.

Thank you, 3ll3d00d. I don't know if I've said it before, but you've been an incredible help to me in my ongoing quest for better fidelity.

How would one go about testing this to know for sure? I went back and listened to a bit of Pacific Rim with and then without the modifications recommended by maxmercy. Even if the slope I'm using is different than intended, the result of a flawed BEQ is significantly more pleasing and engaging than the bass response on disc. To make sure I understand correctly, assuming you're correct about Q in the JRiver interface really being S, the correct way to calculate S would be the following formula: S=1/(((1/Q)^2)-2)/(A+(1/A))+1) - I didn't bother to factor this out myself, so I'm just going to assume you did it correctly where A = 10^(dBgain/40) I guess I'll have to use Excel to simplify this, unless you know of any great online calculators that simplify this process.

I'm just getting back to this thread (sorry for the delay, MikeDude!), and just noticed this exchange. Can you explain? Does this mean that all the BEQ that I've done for JRiver using the low shelf Q values in this thread are invalid?

Unless I'm misunderstand what you're saying, I think you've over complicating zones. I simply created a default zone that applies to all films, another zone that applies to all music, and then zones specifically for each film I BEQ. In my default rule, I tell it to apply to all video file types unless it matches one of the other zones. The only caveat is that each time you create a zone, you have to update the other zones to ignore it. It might sound a bit complicated if you haven't done it before, Mike, but it only adds about a minute to my time to create and update the zone rules each time. Like I said in my previous post, when I've got a little bit more time, and a little less alcohol in me, I'll see about creating a simple primer.