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Scientists map how noise blurs speech across frequencies

NCT ID NCT07822802

Knowledge-focused Sponsor: Ohio State University Source: ClinicalTrials.gov ↗

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only This study
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
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Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

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Status unknown
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First seen Sep 16, 2026 · Last updated Sep 17, 2026 · Updated 1 time

Summary

Researchers at Ohio State University are studying how background noise affects speech understanding in adults with normal hearing. About 200 native English speakers aged 18 to 70 will listen to filtered speech in different frequency ranges while noise is added at various levels. Participants report the words they hear, and researchers measure the percentage of words correctly identified. The trial asks whether noise disrupts speech understanding equally across frequencies and whether understanding declines at the same rate in each range.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Filtered speech and background noise listening tasks
What this could lead to
If the trial maps how noise disrupts speech across frequencies, it could inform better hearing aids and clearer communication in noisy places.
What could go wrong
This is a basic listening study in healthy adults, so it may not capture how real-world hearing loss or aging changes speech understanding.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 200 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Sep 2026

An estimate. Start dates often move.

Expected to finish

Aug 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 70 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Age between 18 and 70 years * Native English speakers * No known history of cognitive impairment * No known history of hearing impairment Exclusion Criteria: * Age under 18 or over 70 years * Non-native English speaker * Known history of cognitive impairment * Known history of hearing impairment

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Conditions

The condition(s) this trial relates to.

hearing loss disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Healthy Hearing Speech perception

How to take part

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  1. The places running it

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  2. The official record

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

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Contacts and locations

Locations

  • The Ohio State University

    Columbus, Ohio, 43210, United States

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