Math Stereo Reverb and Filter (Ruby)

[User108]

Here it is.
I tried other number and also "@insnd.size" but is what not better

I could not catch that unprocessed step, but found that filter is very noisy due to some incorrect logic. And the correct one still to come later when I have some free time.. So I commented out one line which disabled filter. Now sine wave sounds pure as it should be.
Although as I read from Google, Low pas filter has a pretty straight forward algorithm, just averaging nearest samples - it will remove fast changing samples, which are higher frequencies.

[User108]

And here's my previous experiments with this reverb, where bugs created some interesting vocoder effect.. I forgot the line responsible for this, but think somewhere in feedback processing.