Recording the ShopBot

We set up a Zoom recorder with an XY m/s canceling mic to record the surfacing path of the CIF's ShopBot. The machine runs the perimeter of the table and planes it level. The cut noise is a bit erratic, occurring only when the bit catches a high spot. The router noise remains constant, but has an approach and decay from the mic position.

I was hoping for a bit of a doppler effect, but that might be achieved by putting some condensers at opposite ends of the table and panning them hard left and right to the capture device.