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What splits audio into a tone and noise part?
Old 18th June 2020
  #1
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Wolf LeProducer's Avatar
 

What splits audio into a tone and noise part?

Hi!!


What tool do I need to split audio into a tone and noise part? For example, if I wanted to split a kick into its harmonic tone at the fundamental and the its upper mid rage, high rage click part?

Steinberg Backbone does this --- however, no way this is new tech.

What else does this?
Old 18th June 2020
  #2
Here for the gear
Sounds like a crossover maybe? Something to split the signal by frequency?
Old 18th June 2020
  #3
Lives for gear
 

Generic separation of tonal and noise elements of signal is used for instance in noise reduction plugins. Like iZotope RX spectral de-noise module does that internally, also there is Deconstruct module, which is intended for independent adjustment (or total isolation) of elements.

Eventide Physion plugin uses that technique, so you have isolation then two paths with different chain of effects (like EQ, delay, compressor, verb or so) and finally it's combined back with the ratio according to your taste.

There is also one nice freebie, if you would like to experiment with that.
https://www.kvraudio.com/product/voi...y-sundevstudio

Michal
Old 19th June 2020
  #4
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Bouroki's Avatar
 

If you're talking specifically about drums then Waves Torque can also be a cool option.
Old 19th June 2020
  #5
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Wolf LeProducer's Avatar
 

Quote:
Originally Posted by Bouroki View Post
If you're talking specifically about drums then Waves Torque can also be a cool option.
Have it. Love it
Old 19th June 2020
  #6
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Wolf LeProducer's Avatar
 

Quote:
Originally Posted by msmucr View Post
Eventide Physion plugin uses that technique, so you have isolation then two paths with different chain of effects (like EQ, delay, compressor, verb or so) and finally it's combined back with the ratio according to your taste.
It is like a secret weapon. Thanks
Old 19th June 2020
  #7
Under the hood

Quote:
Originally Posted by Wolf LeProducer View Post
What tool do I need to split audio into a tone and noise part? For example, if I wanted to split a kick into its harmonic tone at the fundamental and the its upper mid rage, high rage click part?

Steinberg Backbone does this --- however, no way this is new tech.

What else does this?
The underlying DSP algorithm is called a "Singular Value Decomposition". It operates on a finite-length record, so it requires multiple frames (similar to FFT-based processing) and a "trajectory-tracking algorithm" that stitches the identified tones together across frames. The tonal components are those that come back with larger "eigenvalues"; everything with small values can be considered noise. Doing the cross-frame tracking and possibly associating some tones as overtones of other ones is part of the "special sauce" that each plug-in vendor has to invent for themselves.

If you've ever encountered the statistical analysis method called Principal Component Analysis, it's pretty much the same thing as a single frame of the processing described above.

David L. Rick
Old 19th June 2020
  #8
Gear Head
 

OP: sounds very much like a source-filter decomposition, as described here : https://en.wikipedia.org/wiki/Source...93filter_model
For plugin implementation I'd suggest Ircam-trax-v3 :
https://www.flux.audio/project/ircam-trax-v3/

Can't tell if it's based on the same algorithm, but Sonible Entropy Eq works very well on percussions : https://www.sonible.com/entropyeq/
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