DSP for adding intentional Harmonic Distortion

[VietnamRadioEnjoyer]

I know most people are looking for Hi-Fi & as little coloration as possible, But I am curious about its effects.
I don't think it will be that bad since usually when we are having lots of distortion something in the audio chain isn't working properly. But here everything is fine & we are adding it ourselves as part of the music

Is there a filter to try this out? Something that allows us to choose which frequencies, which order of Harmonics & how much we add. preferably on linux

 

[Sokel]

Distort audibility tester | Distort documentation

distortaudio.org

@pkane (the author) is a member here,there's a thread about it too:

Beta Test: DISTORT - audibility of distortions

DeltaWave beta-test was a huge success, thanks to all of you! This new beta-test is again, only for the brave and the curious :) Introducing DISTORT - free software designed to help determine the audibility thresholds of various audio distortions with your own equipment, at your own pace, with...

www.audiosciencereview.com

 

[Keith_W]

There is also PKHarmonic from @pkane:

ASR thread and PKHarmonic webpage. It is donationware.

(EDIT) sorry, I missed / forgot the "preferably on Linux" bit!!

 

[somebodyelse]

Well...there are ways to use VSTs on linux like LinVST and Carla. Not sure if anyone has done it with PKHarmonic but it might be worth a try.