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Description and Validation of an LDL Procedure Designed to Select SSPLSO

Hawkins David B.; Walden, Brian E.; Montgomery, Allen; Prosek, Robert A.
Ear and Hearing: June 1987


A new procedure is described for measuring loudness discomfort levels (LDLs) for the purpose of selecting SSPLSO characteristics of hearing aids. The person is seated in sound field wearing a high-output hearing aid (with a known amount of 2 cm3 coupler gain) connected to a personal earmold. The loudness of frequency- specific signals is rated from a series of loudness category descriptors. The LDL is defined in terms of SPL developed in a 2 cm3 coupler, thus making selection of SSPLSO from hearing aid specification sheets practical. Experiments on LDL stability over time and validation of the SSPLSO selection are reported.

Address reprint requests to David B. Hawkins, Ph.D., Department of Communicative Disorders, University of South Carolina. Columbia, SC, 29208.

† Present address: Department of Communicative Disorders, University of South Carolina, Columbia, SC 29208.

Portions of this manuscript were presented at the Annual Convention of the American Speech-Language-Hearing Association Convention in Washington, DC, 1985.

Received June 16, 1986; accepted December 15, 1986.

© Williams & Wilkins 1987. All Rights Reserved.