PubMed Health⌕ Search

Biomedical subjects

E Cudahy

Publications and source records attributed to E Cudahy.

6 recordsLinked to original sources
PubMed1991

Toward implementation of a flexible hearing aid measurement system.

An evaluation of a computerized hearing aid measurement system was performed with input and output compression hearing aids stimulated using high-quality audio equipment. The results of the computer measurements were compared to those from a manual technique using conventional laboratory instrumentation. The results from the computerized and manual methods matched very closely. However, the computer system was found to be considerably more flexible than conventional instrumentation and was much easier to use.

Equipment Design↗
PubMed1987

Towards a general measure of distortion.

An approach to the measurement of distortion in hearing aids is presented. Distortion is first defined in general terms. The technique is then applied to the specific problem of predicting the detectability of non-linear distortion. Distortion indices have been obtained for two common, but very different forms of distortion: peak clipping (common to most conventional hearing aids); and, quantization (a form of distortion common to digital systems including digital hearing aids). Distortion indices were derived for the two forms of distortion in steady-state vowels. The results showed good agreement between the distortion indices at the just-detectable level of distortion.

Acoustics↗