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Gear / Technical Help => Post-Processing, Computer / Streaming / Internet Devices & Related Activity => Topic started by: heathen on March 20, 2019, 10:05:21 PM

Title: Multiple rounds of EQ
Post by: heathen 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?
Title: Re: Multiple rounds of EQ
Post by: wforwumbo 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.
Title: Re: Multiple rounds of EQ
Post by: heathen 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.
Title: Re: Multiple rounds of EQ
Post by: noahbickart 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.
Title: Re: Multiple rounds of EQ
Post by: heathen 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!
Title: Re: Multiple rounds of EQ
Post by: Perry 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.
Title: Re: Multiple rounds of EQ
Post by: Gutbucket 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.

Hear here! Dr acoustical-feel-good Nik!