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Repeatable speech audiometry with complete sentences

The Oldenburg Sentence Test (OLSA) is an audiometric test for determining the speech recognition threshold in quiet and in noise. Sentences of the form name - verb - numeral - adjective - noun are used as speech material. The sequence of words is a random combination from an inventory of 50 words in total. The design of the test prevents memorization of the sentences, so the OLSA can be repeated as often as desired. The speaking rate of the OLSA is also suitable for people with severe hearing loss and cochlear implant users.


  • 45 test lists with 20 sentences each
  • 40 test lists with 30 sentences each
  • automatic, adaptive level control for measuring speech recognition thresholds
  • measurement of speech recognition thresholds between 20% and 80% intelligibility possible
  • measurement with continuous noise possible
  • measurement with answer input by patient possible

Areas of application

  • Measurement of speech recognition threshold
  • Comparison of different measurement situations and hearing instrument settings due to very high accuracy
  • Studies with frequently repeated measurements
  • Measurements with CI users
  • Proof of the benefit of hearing aid provision in Germany

Advantages of the OLSA

  • Use of whole sets
  • Very high accuracy
  • Repeatable as often as required, therefore ideal for research and patients where repeated measurements are frequently performed
  • Measurement in quiet or in noise
  • Approved in Germany according to the ‘Hilfsmittelrichtlinie’ (Auxiliary means guideline)

Under "R&D" you can download the R&D version of the measurement procedure as well as a free 30 day trial license. The CE-certified version can be obtained from your audiometer manufacturer.

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