Project IRENE Using optical scanning to digitize ethnographic field recordings on wax cylinders

Noise Reduction: Raw Data

A sample of Raw data with defects that can cause unwanted noise. The white line is some feature sitting on top of the surface, most likely a hair or other fiber. Its edges are very sharp, causing high frequency changes in the height of the surface, which will introduce a high frequency noise into the audio, a sharp clicking noise every time a stylus intersects it.
Actual Dimension:
Exhibit Tags:
diagram, method, blob cleaning, cleaning, and image processing