side channel maker saturator thingy

hi, i (thought i) had a cool idea for a JS plug in, but when i finished it up and tested it out, i was like..."this thing sucks". :D so i thought i would share it for you to all enjoy, if possible. what it does is it takes a mono source (...if it's not mono, it will be, because this sums the left and right channel to make it mono if it wasn't already...) and makes a side channel that is an "octave" up. it is not a pitch shifter, it is an asymmetrical saturation that creates only the #2 harmonic and outputs it to the side channel only, leaving the mid channel "untouched" (dry). it totally didn't turn out how i imagined, and i'm not even sure i tested it properly, but since you don't have any expectations for it, you might enjoy it. fell free to let me know if you think this is good or shit or good shit. it might actually be ok for like a bass guitar or tuba or something. thanks :)

Hey man(woman,or whatever form u are!) um- I gave this a test drive with some fairly decent results>> then I changed this line ## side = (pos-neg)*1000; ## and it got a bit more interesting for me> :D Might be nice for tips of snares n cymbals by default--maybe increase the harmonics even and/or odd? It's got a kinda nice distorted gnarl to it right now.nicejob.Ty!

Thanks for trying it out :) I actually have 4 or 5 different versions of this, but I figured I'd put up the simplest and then see what people liked/disliked and maybe put a few more versions up. Basically I split a mono signal L and R and apply opposite polarity DC to each channel. Then saturate it. This gives you odd harmonics in the mid and even on the side. But I removed the odd/mid to focus on the even. I thought this was a different approach I haven't really seen before. Or have I ? Anyway, be careful messing around in the code because there's DC generated and it can make some nasty pops n stuff if you remove the "filter" (a,b,c). (I can see you doing this right now...:D) I think this effect could be useful to help bring certain elements up out of the mix, but I only really tried it on drum samples and bass guitar. I don't really think it sucks, but I thought that line would be good advertising. :p Just another tool for the box.

I use a cubic function, which produces one odd harmonic. spl0 = (spl0^3)/3 in this case. adding asymmetry (to the input or the function itself) will generate one even harmonic along with the one odd. The method I use to create the even harmonic removes the odd harmonic. I could have simply used the square to achieve the same result, but how do you square the side channel of a mono source ? So my code uses + & - DC to create a side channel and the harmonic. Two birds with one stoner. :)

here's a little more detail...(i was replying from my iPad before) this is the part of the code for the "saturation" (harmonics)... Code:

I appreciate it. Your description got me past my confusion, I get it now.