I started building a DSP Simulator (think Matlab Simulink) for iOS devices in August of last year. It was a personal side project that I found interesting. To be honest, I am not an expert either in DSP or in iOS.

Today I am making this project open source. Maybe some of you are interested in these kind of projects. It can probably move faster and in the right direction because of this.

Here's the Github link: https://github.com/medius/DSPTools

It supports very basic circuit creation and waveform generation for different nodes. A few sample circuits like sample-and-hold with quantizer, delta-modulator and sigma-delta modulator are included. There are more details in the README file, but I am also open to discussing it if you are interested.