The Design and Evaluation of an Artificial Ear.
Abstract
A wideband artificial ear for the calibration of supraaural audiometric earphones was designed and constructed. The device consisted of three acoustically coupled cavities, and was designed to possess the acoustic impedance of an average human ear as seen by a standard supraaural earphone. An acoustic impedance measuring device was developed to aid in the evaluation of this artificial ear. Plots of experimentally determined acoustic impedance of this and other artificial ears are presented and discussed. Comparison of the experimentally determined acoustic impedance of the subject artificial ear with design values showed general agreement. It was concluded that lumped parameter representation of acoustic impedances, and the ability to measure acoustic impedance accurately and rapidly, are valuable tools for the development of complex acoustic systems. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 20, 1972
- Accession Number
- AD0746691
Entities
People
- E. L. Hixson
- Harry L. Record
Organizations
- University of Texas at Austin