The National Acoustic Laboratoriesʼ Procedure for Selecting the Saturation Sound Pressure Level of Hearing Aids: Theoretical Derivation

Abstract

The theoretical procedure provides a good initial prescription of three frequency average SSPL, but it is still essential to evaluate the fitting and, if necessary, fine tune the individual's hearing aid. Compression limiting hearing aids can have slightly lower SSPL settings than peak clipping hearing aids for the same acceptability.