Tom Potter wrote:
I am interested in analyzing surfaces of objects
to detect natural and man-made shaping of the object surface,
and I have been experimenting,
using a MP3 player/recorder to record the sound,
as I drag various fabrics attached to the player across the objects.



Use a Webcam, and if necessary put a magnifying lens in front !
Why are you trying to build an ACOUSTIC Force Microscope to examine
Macroscopic Objects !

Yukio YANO

a retired Scanning Electron Microscope person.