So I thought it had a great look and interface, but couldn't imagine how expensive it was.
...it isn't...
This was a project by two people (I assume students at the time) at The Queen Mary University of London.
It operates of a Raspberry Pi, two USB/MIDI keyboards, 4 slider potentiometers, a Focusrite USB soundcard, an arduion Teensy, two microphones and a monitor.
To make it pretty you build a box.
Their project site has full documentation on the wiring, software, and even hardware.
there are a couple of howevers.
-First, the software was last updated in 2016. They have a compiled app at the project page that works just fine, but if you want to make any changes...well lets just say I have been neck deep in software for the last few days.
-Second, most of the pictures and explanations show the original version, the plans demonstrate the later version...can cause confusion.
So a big part of their project was the Collaborative concept of separate keyboards, microphones, and sample manipulation.
For now I am simply building a single person version...so I only have to source half the hardware from ebay...
...but I had to modify the software...
If you notice in the video, you see two wave forms...but they are both on a single monitor. I wanted to make a single user version and only show one waveform on the whole screen.
If I had done this back in 2016 it would have been a simple text edit and recompile. However, the compiling code changed quite a bit from then and it was far from a simple text edit.