The Sound Archive Project

Sensor Development


One of the main aspects of the Sound Archive Project is to investigate the optical sensing technology required for non-contact surface measurement of mechanical sound recordings. Aims for sensor development include:


The relationship between surface incline and white light sensor response has been investigated {Ref}. Additionally, the relationship between the average reflected light level and the measured surface distance has been examined. In recent work, a reference sinusoidal surface has been used to compare four different sensing technologies.

White Light sensor meausrement of Sinusoidal surface

White light sensor measurements of reference sinusoidal surface. The measured amplitude is 300 nanometers.

Sensor Head Design

Design of custom sensor heads is a key goal for the Sound Archive Project. The choice of lenses, light source, spot size etc., shall be determined using optical system design software, ZEMAX.