The testings of speech intelligibility for clinical practise

Hearing loss makes it difficult to understand speech; especially in noisy surroundings. Several different speech reception tests are made available, and these are used routinely in hearing clinics (audiological clinics). During the tests, the patient is typically presented with words or sentences, which the patient is to repeat or elect from several words on a computer screen.

Patients with auditory processing disorder (APD) ought not to have hearing problems, but nevertheless, they still find it difficult to hear and understand speech. Since APD is characterized by poor performance in one or several different auditory abilities, a single test is not able to address all dimensions of APD; a battery of tests is necessary. APD test batteries are available in numerous languages, including Danish.


This project has assessed different aspects of the most common speech reception tests in the clinical practice in Denmark. In addition, the Danish APD test battery has been assessed in relation to different parameters.


The project consisted of seven studies in total: five studies assessing tests for the examination of speech intelligibility and two studies assessing the tests found in the Danish APD test battery. Across the studies, the tests were assessed through experimental tests, clinically collected data and computer simulations.

The project contributed to the existing litterature by adding knowledge about the most widespread speech reception tests in the Danish clinical practice and about the tests in the Danish APD test battery. This additional knowledge is important to improve the tools for hearing tests and to ensure accurate interpretation of the test results. This provides better hearing diagnostics and better treatment of hearing problems.

Uffe Kock Wiil


Start: April 2013
End: June 2017


The project was carried out in collaboration with the University Hospital of Copenhagen, DELTA – a part of FORCE Technology and the Danish APD group.


The project was funded by the Oticon Foundation.