Is there any software for designing custom audio filters? I am not talking about EQ :|
By filters, I mean crazy filters which cannot be achieved by simple EQ(Which its purpose mostly is to sound musical)

 

There are quite a few. More details would help.

On a first thought I can think of:
1. Blue Cat Audio: has several plugins that can host another BCA plugins and any other VST.
2. MeldaProduction MXX: quite the same but can only use other MeldaProduction plugins
3. HY-Plugins: I'm not sure but I think it can do something similar to MXX. Meaning only other HY plugins. Could be another company.

And then modular ones, meaning you can route with virtual cables inside the plugin. They are more complicated
1. MuTools MUX: can host other VSTs, you can make a custom GUI
2. Plogue Bidule: the best hosting another VSTs

 

What does this have to do with Custom audio filter? You are introducing plugin wrapper and routers here!

 

do you mean coding or clicking together ?

 

Programming? Or VST? ApQualizr2 has plenty of filters and ways to modulate these.
http://apulsoft.ch/apqualizr2/

 

That's why more details of what you want and how would help.
"custom audio filter" is very ambiguous.

 

Something like the picture above!

 

Why do you look for something if you already found this

So something like this:
https://www.google.de/search?safe=o...fjiAhXSY1AKHY6pCbwQvQ4ILCgA&biw=1378&bih=1027

I am curious, what is you intention ?

 

Cause it does not have real time audio playback and whole lots of other useful features. Like being able to draw nodes then interpolate. I just want to know whether anything better with better features(I might not know what those features will be- like you try two plugins and see one has better implementation) exists?

 

C Sound .... https://csound.com/

 

I know C sound exists. But could you please be more specific? What about C Sound? Oh I can implement my idea in it? Oh what about C++? Python? Ruby? I can name a dozen of languages as an answer.

 

FFAQ (foreseen frequently answered questions):
1. yes, that too
2. My answer is as specific as your questions

Matlab. You can do everything with Matlab.

 

If the filter simulator you're using can save impulse responses (and there are some that can) then all you have to do is load the impulse response into a realtime convolutor VST/AU. I guess you haven't yet thought about this, right? ;)

 

For my forays into DSP (such as filter design) I use Reaktor, and https://www.native-instruments.com/en/products/komplete/synths/reaktor-6/dsp-articles/ these set of articles. Pd or Max/MSP can of course do this stuff as well.

For prototyping I use Python and jupyter + matplotlib to quickly try out/visualise things.

 

By the way, you could also draw any spectral shape and do an inverse FFT to get your desired Wave file.
I'm sure there are wave editors that can do it, otherwise there are many ready-made fft libraries for a lot of programming languages, just search for <your desired prog language> and <fft library>.

 

I don't have a clue of what he wants but it's more than IR based EQ/reverb.

 

you can implement your idea in it or whatever you like....you can make vsts too

 

I might be wrong but the 1st idea that came to my mind was to use Reaktor to accomplish this.

 

He wanted to design crazy custom audio filters and that's a way to do it. In Europe it's legal to use realtime convolution for other purposes that EQ or reverb, I don't know about the rest of the world however.

 

I have and I know it saves impulse response of course. By real-time I mean while changing coefficients hearing effect somehow. Saving it and loading it then monitoring is the process I wanna avoid