IvnOs

I'm working on some insane idea - reversed subtractive/additive synthesizer based on noise as source.

And additive possibilities is my main problem for now.

I can't figure it out why my poly~ object is distorting signal on high octaves (see screenshots with spectrum), even if i'm upsampling it to 8. I think that it is happening because of foldover, but i'm not sure about that. That is why i'm asking for you to help me.

Also i really can't understand the nature of clicks that are appearing when i'm triggering the notes with low attack values.

I will be very thankful for any advice or any direction to what info should i dig, about this problems.

On screenshots, as you can see there is a huge amount of low frequencies when i'm triggering high notes. Also sometimes this gaps covering all spectrum. And sometimes notes playing to louder then it should.

Hi everybody.
Firstly, some words about my project.
I'm working on some insane idea - reversed subtractive/additive synthesizer based on noise as source.

And additive possibilities is my main problem for now.
I can't figure it out why my poly~ object is distorting signal on high octaves (see screenshots with spectrum), even if i'm upsampling it to 8. I think that it is happening because of foldover, but i'm not sure about that. That is why i'm asking for you to help me.

On screenshots, as you can see there is a huge amount of low frequencies when i'm triggering high notes. Also sometimes this gaps covering all spectrum. And sometimes notes playing to louder then it should.


aliasing-foldover-problem

Add: Also found some info that biquad~ is not a best choice for frequency track... Tried to remake device with reson~, at higher octaves C7 - G8, problems above are disappearing, but tones are becoming more distorted.

Aliasing foldover problem