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Spectral Dynamics and Speech Understanding by Hearing Impaired People
NCT01867515 · View on ClinicalTrials.gov ↗
Study Summary
The purpose of this program of research is to understand the perception of the dynamic spectral properties of speech by hearing-impaired listeners, with the long-term goal of improving speech understanding by these individuals in adverse listening conditions. The proposed research compares the performance of normally-hearing and hearing-impaired listeners on measures of speech understanding in the presence of different types of signal distortion and speech understanding of signals with enhanced spectral dynamics. A computational model based on the amount of potential information available in speech will be used to quantify differences in speech intelligibility due to hearing status and stimulus characteristics.
Conditions Studied
Interventions
- OTHER Acoustic distortion of speech
Study Locations (1)
Oregon
- VA Portland Health Care System, Portland, OR — Portland
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 50 participants |
| Start Date | 2013-08 |
| Est. Completion | 2016-09 |
| Phase | NA |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT01867515
The ClinicalTrials.gov registry entry for NCT01867515 describes a study currently listed as completed. It is categorized as NA, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 50 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is VA Office of Research and Development, which has 1,863 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 1 condition, with Hearing Loss, Sensorineural appearing as the primary indexed condition, and to 1 intervention — of which Acoustic distortion of speech is the first listed. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT01867515 reports 1 study location spanning 1 distinct geographic area — top geographies include Oregon. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT01867515 about?
NCT01867515 is a clinical study titled "Spectral Dynamics and Speech Understanding by Hearing Impaired People". The purpose of this program of research is to understand the perception of the dynamic spectral properties of speech by hearing-impaired listeners, with the long-term goal of improving speech understanding by these individuals in adverse listening conditions. The proposed research compares the perfo...
What is the current status of trial NCT01867515?
This trial is currently completed. It is a NA study. The enrollment target is 50 participants. The study started on 2013-08. Estimated completion is 2016-09.
What conditions does trial NCT01867515 study?
This clinical trial studies the following conditions: Hearing Loss, Sensorineural. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
What interventions are being tested in trial NCT01867515?
The interventions under investigation include: Acoustic distortion of speech (OTHER). Each intervention is being evaluated for safety and efficacy as part of this clinical study.
Who is sponsoring clinical trial NCT01867515?
This trial is sponsored by VA Office of Research and Development, which has 1,863 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT01867515 being conducted?
This trial has 1 study location across Oregon. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
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