Simply some rapid writing on a chalkboard. . . Interior. . . Using an ordinary piece of chalk. . This is a mono file at 44. 1 khz and 16 bit. Recorded with sony mini-disc recorder in 2009.
We've recorded the sound produced by writing in one of the whitebords which are in the libary of the poblenou campus of the pompeu fabra university (upf).
A dry-erase marker squeaking on a whiteboard. Squeaking, rubbing, could be used for other things on a similar kind of surface. Recorded with zoom h1, in a classroom.