Synchronized Swept-Sine: Theory, Application, and Implementation - October 2015
Effect of Microphone Number and Positioning on the Average of Frequency Responses in Cinema Calibration - October 2015
The Measurement and Calibration of Sound Reproducing Systems - July 2015
Pitfalls in Hearing Aid Response Curves
This discussion of ambiguities in interpreting hearing-aid measurements centers around the frequency response as generated with a 2 cc coupler artificial ear vs the subjective measurements of loudnsess of an actual ear; the frequency response as obtained in 2 cc coupler artificial ear vs probe tube measurements in actual ears fitted with different types of earmolds; the difference in reported frequency response caused by variations in length, diameter and other acoustic coupling hardware; and differences in frequency response curves taken on sound boxes and actual anechoic chambers. Errors in frequency response as the result of using improper input sound pressure levels, and the effect of the volume control settings on hearing aids are discussed. It is shown that visual displays can also alter the subjective acceptance of a frequency response curve.
Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.