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  #1  
Old 03-02-2023, 04:53 AM
aneirin_w aneirin_w is offline
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Default Avid's Pro Subharmonic Not Nulling

Hi all,

Does anyone knows what settings in Pro Subharmonic causes it not to null?

I've got a track that i recorded twice with the same settings, flipped the polarity on one of the track and it does not null!

Thanks in advance.
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  #2  
Old 03-02-2023, 05:09 AM
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JFreak JFreak is offline
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Default Re: Avid's Pro Subharmonic Not Nulling

Hi, welcome to the community.

Unless you recorded a perfectly stable sine wave, any kind of modulation before the plugin causes it to not null.
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  #3  
Old 03-02-2023, 06:19 AM
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Farhoof Farhoof is offline
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Default Re: Avid's Pro Subharmonic Not Nulling

What version, OS, PT version, dsp or not, etc?

Subharmonic has been bugged for a while generating different outputs each time you press play. I'm not sure it's fixed. Does it sound the same but just doesn't null or is there a (huge) level difference?

See also: https://duc.avid.com/showthread.php?t=399381
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  #4  
Old 03-02-2023, 07:08 AM
originalscottyg originalscottyg is offline
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Default Re: Avid's Pro Subharmonic Not Nulling

Quote:
Originally Posted by Farhoof View Post
What version, OS, PT version, dsp or not, etc?

Subharmonic has been bugged for a while generating different outputs each time you press play. I'm not sure it's fixed. Does it sound the same but just doesn't null or is there a (huge) level difference?

See also: https://duc.avid.com/showthread.php?t=399381
Yeah, I've been bitten by this before. If I use it, I generally use it for something specific, and print it right away.
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  #5  
Old 03-03-2023, 02:53 PM
aneirin_w aneirin_w is offline
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Default Re: Avid's Pro Subharmonic Not Nulling

Quote:
Originally Posted by JFreak View Post
Hi, welcome to the community.

Unless you recorded a perfectly stable sine wave, any kind of modulation before the plugin causes it to not null.
That is interesting, I've just tried it with sine wave track and it does indeed null. Does not work well on any instrument - tried on drums/bass/keys
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  #6  
Old 03-03-2023, 03:00 PM
aneirin_w aneirin_w is offline
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Default Re: Avid's Pro Subharmonic Not Nulling

Quote:
Originally Posted by Farhoof View Post
What version, OS, PT version, dsp or not, etc?

Subharmonic has been bugged for a while generating different outputs each time you press play. I'm not sure it's fixed. Does it sound the same but just doesn't null or is there a (huge) level difference?

See also: https://duc.avid.com/showthread.php?t=399381
That's a great thread! thanks.

Just A/B-ing them, I can't really tell much of a level difference, but when I invert the polarity of one of them, there seems to be some phase cancellation.

I'm using PT 2022.12, same as the plugin. Using Monterey V12.6.3. Plugins are running natively.
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  #7  
Old 03-03-2023, 03:03 PM
aneirin_w aneirin_w is offline
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Default Re: Avid's Pro Subharmonic Not Nulling

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Originally Posted by originalscottyg View Post
Yeah, I've been bitten by this before. If I use it, I generally use it for something specific, and print it right away.
Does seem like that will be the approach I'll be taking now! haha
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Old 03-03-2023, 03:30 PM
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Default Re: Avid's Pro Subharmonic Not Nulling

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Originally Posted by aneirin_w View Post
That is interesting, I've just tried it with sine wave track and it does indeed null. Does not work well on any instrument - tried on drums/bass/keys
Modulation (f.ex reverb) by definition does not null if you compare two different prints.
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  #9  
Old 03-03-2023, 04:25 PM
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Eric Lambert Eric Lambert is offline
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Default Re: Avid's Pro Subharmonic Not Nulling

Yeah, I don't know that anything is broken, it's just the nature of chaotic processing where each time there's a different result, perhaps undetectable by the ears. I wouldn't worry about it, unless you're doing something that requires bit-accurate repetition.

Last edited by Eric Lambert; 03-04-2023 at 10:44 AM.
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  #10  
Old 03-03-2023, 10:57 PM
smurfyou smurfyou is offline
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Default Re: Avid's Pro Subharmonic Not Nulling

I really like the sound of it but ever since the output level bug ^^ I tend to just print it as I go.
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