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calf-studio-gear / calf

Developers repository of Calf Studio Gear. Expect some issues when using it for production.
http://calf-studio-gear.org
GNU Lesser General Public License v2.1
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A dedicated formant processor plugin? #124

Open unfa opened 7 years ago

unfa commented 7 years ago

AFAIK apart from Autotalent there is no opensource formant-processing capable plugin. And Autotalent is pretty limited in that regard.

Do you think a dedicated formant processor would be good thing to have? I guess there are more things possible todo with formants than just shifting, I guess compressing/expanding formant could also be a thing, and possibly amplifying/attenuating the formant depth could also be a thing.

harryhaaren commented 7 years ago

"Formats" are basically specific settings for filters. JOS writes a detailed analysis of formant sounds here: https://ccrma.stanford.edu/~jos/fp/Formant_Filtering_Example.html

So achieving formant filtering is not difficult. IIUC, what you are looking for is a plugin that is capable of easily providing "musical" control over a bank of formant-filters, not "a formant processor" (aka, biquad filter).

The Propellorheads also do a great write-up of format-manipulation (with audio samples!) https://www.propellerheads.se/blog/thor-demystified-17-filters-pt-5-formant-filters

I agree that linux-audio doesn't have one of these - and would be cool to have :)

unfa commented 7 years ago

Yes, I wondered if a vocoder in combination with a pitchshifter could be used as a formant shifter - but I guess that's produce a lot of bad side effects.

A dedicated effect plugin that could analyse and manipulate formant information in realtime, possibly with a sidechain input would be a really nice addition to the FLOSS music production arsenal.