https://www.nfsa.gov.au/sites/default/files/2024-07/Cane%20Toads%20Mega%20Menu%201_1000x745.jpg
Ultrasonic
Sound waves at a frequency of more than approximately 15,000 Hz., which is used to provided energy for cleaning film. Electrical energy is converted to generate ultrasonic frequencies, then a transducer converts the energy at these frequencies into mechanical vibrations.
The National Film and Sound Archive of Australia acknowledges Australia’s Aboriginal and Torres Strait Islander peoples as the Traditional Custodians of the land on which we work and live and gives respect to their Elders both past and present.