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Author Topic: Multiple rounds of EQ  (Read 1293 times)

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Offline heathen

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Multiple rounds of EQ
« on: March 20, 2019, 10:05:21 PM »
Is there anything inherently wrong with doing multiple rounds of EQ on the same file?  Like doing one pass with one set of settings, then going back and doing another pass with different settings.  Kosher?
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Offline wforwumbo

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Re: Multiple rounds of EQ
« Reply #1 on: March 20, 2019, 10:23:58 PM »
No there shouldn't be much of an issue. Many multiband EQs work this way, with a series of cascaded 2-pole filters that all just keep pushing the samples down the chain, so to speak.

You *might* theoretically run into an issue of resonance if you keep passing the same bit of audio through the same filter over and over again, but you'd need a pretty sharply peaked bandpass filter for that to be an issue.
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Offline heathen

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Re: Multiple rounds of EQ
« Reply #2 on: March 20, 2019, 10:30:05 PM »
No there shouldn't be much of an issue. Many multiband EQs work this way, with a series of cascaded 2-pole filters that all just keep pushing the samples down the chain, so to speak.

You *might* theoretically run into an issue of resonance if you keep passing the same bit of audio through the same filter over and over again, but you'd need a pretty sharply peaked bandpass filter for that to be an issue.

Thanks for the quick and knowledgeable response!  Hope you're doing well.
Recordings on LMA: https://archive.org/search.php?query=taper%3A%22Lucas+Lorenz%22
Mics: Core Sound TetraMic | AT4031 | AT AE5100 | AT853 (C/SC) | Line Audio CM3 | Sennheiser e614 | Sennheiser MKE2 | DPA 4061 | CA-14 omni Pre: CA9200 Decks: Zoom F8 | Roland R-05

Offline noahbickart

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Re: Multiple rounds of EQ
« Reply #3 on: March 21, 2019, 10:09:49 PM »
No there shouldn't be much of an issue. Many multiband EQs work this way, with a series of cascaded 2-pole filters that all just keep pushing the samples down the chain, so to speak.

You *might* theoretically run into an issue of resonance if you keep passing the same bit of audio through the same filter over and over again, but you'd need a pretty sharply peaked bandpass filter for that to be an issue.

Thanks for the quick and knowledgeable response!  Hope you're doing well.

I suppose this is as good a thread as any to wish wforwumbo a hearty mazel tov for defending his dissertation, and becoming (not that kind of ) doctor wforwumbo.
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Offline heathen

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Re: Multiple rounds of EQ
« Reply #4 on: March 21, 2019, 10:56:53 PM »
No there shouldn't be much of an issue. Many multiband EQs work this way, with a series of cascaded 2-pole filters that all just keep pushing the samples down the chain, so to speak.

You *might* theoretically run into an issue of resonance if you keep passing the same bit of audio through the same filter over and over again, but you'd need a pretty sharply peaked bandpass filter for that to be an issue.

Thanks for the quick and knowledgeable response!  Hope you're doing well.

I suppose this is as good a thread as any to wish wforwumbo a hearty mazel tov for defending his dissertation, and becoming (not that kind of ) doctor wforwumbo.

Right on.  Double mazel tov!
Recordings on LMA: https://archive.org/search.php?query=taper%3A%22Lucas+Lorenz%22
Mics: Core Sound TetraMic | AT4031 | AT AE5100 | AT853 (C/SC) | Line Audio CM3 | Sennheiser e614 | Sennheiser MKE2 | DPA 4061 | CA-14 omni Pre: CA9200 Decks: Zoom F8 | Roland R-05

Offline Perry

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Re: Multiple rounds of EQ
« Reply #5 on: March 28, 2019, 10:34:31 PM »
That's a regular practice for me. I find easier to work on a particular freq band or even one instrument at a time. Keeps me from affecting adjacent frequencies. Rather than stacking eq's on a track, I render between eq's. This is why it takes me so long to share a recording. That, and I'm a little anal retentive.
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Offline Gutbucket

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Re: Multiple rounds of EQ
« Reply #6 on: March 29, 2019, 12:08:36 PM »
I suppose this is as good a thread as any to wish wforwumbo a hearty mazel tov for defending his dissertation, and becoming (not that kind of ) doctor wforwumbo.

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