Auditory profile: spectral and temporal resolution (HEARCOM, WP2)

Researcher(s):    T.E.M. van Esch, MSc.
Supervisor(s):     prof. W.A. Dreschler, PhD.

Background:
Often, sensorineurally hearing impaired listeners experience more difficulties in understanding speech in noisy situations than expected based on their pure-tone thresholds. A main reason for this is the poor processing of suprathreshold sounds in these patients, due to reduced spectral and temporal resolution. Therefore, it is important that tests on spectral and temporal resolution will become part of the auditory profile (see also www.hearcom.info).  In the last few years, several spectral- and temporal-resolution tests have been developed, among which two tests that measure both spectral and temporal resolution simultaneously. In the current study, we will investigate which of these tests is most feasible and relevant for clinical use.

Aim:
To determine which test is clinically feasible and relevant for measuring spectral and temporal resolution in sensorineurally hearing impaired patients.

Method:
An experiment will be set up in which measurements of spectral and temporal resolution and speech perception will be conducted in normal hearing and hearing impaired listeners. Results of two ‘combination tests’ (tests which measure both spectral and temporal resolution simultaneously) will be compared to results of more conventional spectral and temporal resolution tests and to speech perception measurements in noise. In this way, reliability, accuracy, relevance (in relation to speech perception) and clinical usefulness of these tests will be investigated.