Application of finite difference/time-stepping methods for physical modeling in Reaktor?

cs5947

spring_dafx_r1.pdf

Hey, I want to be able to apply this paper to be able to simulate a geometrical model of a spring reverb tank. It is applied using finite difference techniques, more of which can be found here.

https://youtu.be/NTp7dRuld08?t=79

The only issue here is that I have no idea how the hell I can properly apply this technique using the method displayed at 1:19. I have a basic experience in waveguide/karplus-strong physical modeling and have already created a spring reverb you can find here.

https://www.native-instruments.com/en/reaktor-community/reaktor-user-library/entry/show/14629/

The reason I'm posting this is because I want to branch out and test the waters with different, more physically-accurate methods of sound generation.

Regards,

Chet Singer

I've done some reading about that technique and am intrigued by it. They've also done an interesting brass horn. But unfortunately, the math is beyond me.

cs5947

I really don't blame you Chet. This stuff is hard.

Maybe you could try studying this ensemble I found? It's String by Anders Straadt.

https://www.native-instruments.com/en/reaktor-community/reaktor-user-library/entry/show/2467/

I don't think it's really 'finite difference' in the most rigid sense but it does calculate the newtonian forces of a string.