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EQ 560 gain/Q interaction problem?

Open jonlinnarson opened this issue 3 years ago • 0 comments

I love your EQ 560 (it's probably the greatest graphic EQ there is in JS format) but I noticed that there might be a miscalculation in the max Q value.

In line 79 the maximum Q value of 5.763566 seems too large. If you divide it by 8, so that it becomes 0.72044575, the gain/Q interaction becomes pretty much identical to UAD's API 560. I don't own a real one (unfortunately) so I can't say for sure that this is how a real 560 behaves, but UAD are usually pretty close with the filter shapes in their EQs.

I did upload my own modded version to the Reaper stash, but I should ofc have asked you first. If you'd like I can remove it again!

Thanks for your great work!

(PS: Now that Reaper has native plug-in instance and FX-chain oversampling it could make sense to have a on/off control for the internal oversampling, just in case someone wants to use the FX-chain oversampling function)

jonlinnarson avatar Jun 07 '22 21:06 jonlinnarson