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Old 11-05-2012, 04:43 AM   #1
tumult
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Default ReaEQ Low Pass sample rate bug (FIXED)

ReaEQ's lowpass filter behaves differently at different sample rates. Or rather, it behaves the same regardless of the sample rate, depending on how you want to look at it I'll let the screenshots do the talking.

44khz:


96khz:
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Old 11-05-2012, 06:15 AM   #2
timlloyd
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This is actually 'expected behaviour', and arguably not a 'bug' ...

But it pretty much is a bug ... depends how you look at it

Attention to and compensation for frequency/phase response distortion as fc approaches sr/2 is one of the things that you pay for when you get an EQ that's been better designed.

ReaEQs peaking filters also have this issue. Btw, you want to be looking at the output spectrum with white/pink noise input (or plotting the output amplitude of a sine sweep over time), not just the GUI display curve; they aren't necessarily the same.

Fwiw, you'll see this with every (that I'm aware of) stock DAW EQ plug-in (perhaps except DAWs such as Sadie, Sequoia, soundBlade)

Last edited by timlloyd; 11-05-2012 at 06:29 AM.
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Old 11-05-2012, 07:46 AM   #3
tumult
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No, the problem is that the lowpass filter isn't correctly calibrating for the sample rate of the project. It thinks it's always at 44 or 48khz (not sure which). The other band types are fine.
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Old 03-20-2016, 09:29 AM   #4
Dstruct
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Seems to be fixed (5.20pre26). Just rendered two files at 48 and 96 kHz and they are sounding the same.
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