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Multiple rounds of EQ

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heathen:
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?

wforwumbo:
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.

heathen:

--- Quote from: 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.

--- End quote ---

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

noahbickart:

--- Quote from: heathen on March 20, 2019, 10:30:05 PM ---
--- Quote from: 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.

--- End quote ---

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

--- End quote ---

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.

heathen:

--- Quote from: noahbickart on March 21, 2019, 10:09:49 PM ---
--- Quote from: heathen on March 20, 2019, 10:30:05 PM ---
--- Quote from: 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.

--- End quote ---

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

--- End quote ---

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.

--- End quote ---

Right on.  Double mazel tov!

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