Auditory Processing of Complex Sounds - Sensitivity to Chirps

  • End date
    Nov 30, 2023
  • participants needed
  • sponsor
    University of Rochester
Updated on 22 October 2022
Accepts healthy volunteers


The purpose of this study is to better understand the sensitivity of listeners to the fast changes in frequency or amplitude of sounds that occur in speech. The investigators are studying ways to manipulate these aspects of sounds in an effort to make speech sounds more clear.


The investigators will test listeners with normal hearing or with mild or moderate hearing loss. Tests will first focus on sensitivity to changes in fast changes in amplitude (loudness) or frequency (pitch) in sounds. Then the investigators will test the intelligibility of synthetic vowels and syllables in which these "chirps" are manipulated. Finally, the investigators will test intelligibility of words in noise while manipulating sounds in an effort to improve clarity.

Condition Hearing Loss, Sensorineural
Treatment Signal processing to improve intelligibility
Clinical Study IdentifierNCT03666676
SponsorUniversity of Rochester
Last Modified on22 October 2022


Yes No Not Sure

Inclusion Criteria

Normal hearing, mild or moderate symmetric sensorineural hearing loss

Exclusion Criteria

Asymmetric hearing thresholds (more than 15 decibels (dB) threshold difference between the two ears at any frequency up to 4 kHz)
Severe hearing loss (greater than 60 dB hearing thresholds at any frequency up to 4 kHz)
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What happens next?
  • You can expect the study team to contact you via email or phone in the next few days.
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Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

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If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

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Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

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