simulate DJ scratching

I want to make a mechanic that when a user makes a certain input they can make a scratch noise like a DJ Ideally I want it to be in real time (if you've seen Sarato or and other dj software you can see what mean) that when the input is made its reading the soundwave. Ex: you move the analog stick left and right, unity goes over the sound wave left and right. is there a tool out there that will help is unity robust enough that I can do sound production like that, need help, send beer.