hi. i am interested in building a voice changer. are there any products that can do this? but im looking to create this specific effect
https://youtu.be/ejmWBU7W4YQ?t=700
time: 12:06
theres 3 voice effects here
thanks
I’m not seeing anything on the sparkfun website that would work for you unfortunately. 
You might be able to find a phone app for that though.