This trial is active, not recruiting.

Condition hearing loss
Treatment oldenburger sentence test, localization test
Sponsor University of Zurich
Start date April 2015
End date December 2015
Trial size 30 participants
Trial identifier NCT02602171, DN_23_10_15


The present study has the evaluation of a test to measure the localization performance goal . It is about the perception of danger audio signals in everyday listening environments nearby which are reproduced in controlled laboratory conditions. In addition, a dereverberation algorithm regarding speech intelligibility and localization ability is evaluated . The research hypothesis is that the dereverberation of the audio signals can improve speech intelligibility for both normal hearing and hearing-impaired persons. In addition, the binaural dereverberation algorithm should not affect the localization ability in everyday situations.

United States No locations recruiting
Other countries No locations recruiting

Study Design

Allocation randomized
Intervention model parallel assignment
Masking single blind (subject)
Oldenburger Sentence test, localization test
oldenburger sentence test, localization test
Oldenburger Sentence test, localization test
oldenburger sentence test, localization test

Primary Outcomes

Oldenburger sentence test and localization test with 30 subjects
time frame: 1 day

Secondary Outcomes

Differences in localization ability
time frame: 1 day

Eligibility Criteria

Male or female participants from 18 years up to 70 years old.

Inclusion Criteria: - adults , in general healthy (no diagnosis of dementia and/or stroke known), mother tongue: (swiss) german, normal hearing or with hearing aid wearers both sides or with CI support on both sides, symmetrical hearing loss Exclusion Criteria: - deviation of inclusion criteria, known fluctuating, rapidly progressive hearing loss, test person is not able to come one time a week to the University Hospital of Zurich or to handle 1-2 hours appointments or is not able to use touchscreen

Additional Information

Official title Virtual Acoustic Localization Experiment for the Evaluation of a Dereverberation Algorithm in Terms of Speech Intelligibility & Localization Performance of Normal Hearing & Hearing Impaired Subjects
Principal investigator Norbert Dillier, Prof. Dr.
Trial information was received from ClinicalTrials.gov and was last updated in November 2015.
Information provided to ClinicalTrials.gov by University of Zurich.