Research output per year

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Personal profile

Research interests

I am a clinical physicist-audiologist at the department of Otolaryngology Head and Neck Surgery. In my clinical work I am involved in care for adults and children with hearing aids or cochlear implants. My research focusses on understanding and measuring speech recognition in noise abilities. I developed the digits-in-noise hearing screening test in the early 2000s. This test is known as the National Hearing Test. I am an expert on digits-in-noise tests and worked on many related projects including the development of similar tests in other languages, improving the efficiency of these test and the introduction of these speech-in-noise tests in clinical practice for children, CI users and via eHealth technology. I am part of the steering group who guided the WHO in the development of the HearWHO, a digits-in-noise test which was launched worldwide.

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Research Output

Improving Sensitivity of the Digits-In-Noise Test Using Antiphasic Stimuli

De Sousa, K. C., Swanepoel, D. W., Moore, D. R., Myburgh, H. C. & Smits, C., 1 Mar 2020, In : Ear and Hearing. 41, 2, p. 442-450 9 p.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access

Development and validation of an automatic speech-in-noise screening test by telephone

Smits, C., Kapteyn, T. S. & Houtgast, T., 2004, In : International Journal of Audiology. 43, 1, p. 15-28 14 p.

Research output: Contribution to journalArticleAcademicpeer-review

Development and validation of a smartphone-based digits-in-noise hearing test in South African English

Potgieter, J-M., Swanepoel, D. W., Myburgh, H. C., Hopper, T. C. & Smits, C., 2016, In : International Journal of Audiology. 55, 7, p. 405-411

Research output: Contribution to journalArticleAcademicpeer-review

Speech Recognition Abilities in Normal-Hearing Children 4 to 12 Years of Age in Stationary and Interrupted Noise

Koopmans, W. J. A., Goverts, S. T. & Smits, C., 2018, In : Ear and Hearing. 39, 6, p. 1091-1103

Research output: Contribution to journalArticleAcademicpeer-review


  • 2 Examination
  • 1 Organising a conference, workshop, ...
  • 1 Editorial work
  • 1 Membership of committee

International Journal of Audiology (Journal)

Cas Smits (Member of editorial board)
2018 → …

Activity: Publication peer-review and editorial workEditorial work

World Congress of Audiology

Cas Smits (Participant)

Activity: Participating in or organising an eventOrganising a conference, workshop, ...

Research Foundation Flanders (FWO), Belgium (External organisation)

Cas Smits (Chair)
2017 → …

Activity: MembershipMembership of committee