< Back to previous page

Publication

Objectief en automatisch meten van spraakverstaan

Book - Dissertation

Hearing impairment is considered the most prevalent impairment in the world. Methods to diagnose hearing loss are used for screening, diagnostics and evaluation during rehabilitation with auditory prostheses. We can distinguish between behavioural and objective diagnostic methods. With behavioural methods, active participation of the patient is required, which leads to confounded results, or makes it entirely impossible to test some patients. With behavioural methods, the response is the result of activation of the entire auditory system, so it is hard to distinguish between disorders at different levels. With an objective method, these problems are not present, and by manipulating the auditory stimulus and response detection methods, different parts of the auditory system can be precisely evaluated. Current objective measurements only allow investigation of the early parts of the auditory system as they do not use real speech stimuli. This is currently the missing link between behavioural and objective audiometry. In this project, we developed an objective and automatic measure of speech intelligibility using speech signals. The basic principle is to record the electroencephalogram (EEG) in response to the speech signal and define a metric to compare between the EEG and the temporal envelope of the speech signal. This metric is indicative of the acuity of transmission of essential features of speech to the auditory cortex, and therefore of speech intelligibility.
Publication year:2020
Accessibility:Open