Hiring - dsp algorithms needed

Hi! We are building a mobile app for musicians which includes dsp algorithms to adjust their sound automatically to give music they create a little boost.
We would prefer dsp algorithms that are already built or have a foundation already complete so we can move through this milestone with speed.
To start we are looking at items like a vocal compressor, limiter, reverb, harmonic excitement.

If you are interested in working on this project, please send a message.