The main objective is to assess the perceived sound quality of different speech and music excerpts that are modified using the dereverberation algorithm by CI users. To this end a suitable graphical user interface (GUI), the MuSHRA, will be…
ID
Source
Brief title
Condition
- Hearing disorders
Synonym
Research involving
Sponsors and support
Intervention
Outcome measures
Primary outcome
MuSHRA test outcomes, i.e., overall music quality/ enjoyment/ experience,
distortion/ naturalness, speech/ vocal quality, instrumental quality,
subjective ratings on a Likert scale, or a continuous scale when sliders are
used on a GUI.
Secondary outcome
na
Background summary
A cochlear implant (CI) is a device that provides people with severe hearing
loss or deafness the ability to acquire functional hearing by electrically
stimulating the auditory nerve. CIs are primarily designed to provide speech
understanding. Their ability to convey music, however, is very limited due to
the limitations of the implant and the way CIs decode sounds. One of the most
pressing problems is that CIs convert sound into electrical signals by
extracting the acoustic envelope and discarding the fine structure of the
sound. CI users report a poor sound quality of music. The Multi Stimulus test
with Hidden Reference and Anchor (MuSHRA) can be used to quantify these
subjective claims. This is a standardized and commonly used method for
subjective assessment to numerically quantify sound quality among CI users.
Study objective
The main objective is to assess the perceived sound quality of different speech
and music excerpts that are modified using the dereverberation algorithm by CI
users. To this end a suitable graphical user interface (GUI), the MuSHRA, will
be optimized.
Study design
This study is a prospective semi-randomized single-centered cross-sectional
study. The total duration of the study is estimated to be one year. CI users
and normal-hearing (NH) subjects are included as study group.
Study burden and risks
Each subject will participate in a maximum of two non-consecutive test
sessions. Each session lasts about three hours, with breaks between each
sub-test if needed. The study is considered to involve negligible risk and
minimal burden. Benefits to the Cl population at large may be to provide CI
users with a user-friendly and versatile research tool to quantitatively assess
the sound quality, and aid in their overall sound experience. Given the small
risk and high yield of this research it is an ethically justified study.
Albinusdreef 2
Leiden 2333 ZA
NL
Albinusdreef 2
Leiden 2333 ZA
NL
Listed location countries
Age
Inclusion criteria
Normal-hearing subjects:
- 16 year of age or older
- Normal-hearing listeners should have normal hearing, namely an average
pure-tone threshold of 35 dB or less across a frequency range of 500-4000 Hz.
CI users:
- Implanted with a CI at least on one side;
- 16 years of age or older;
- Post-lingual deafness
- At least six months experience with their CI;
- A speech understanding score (CVC phoneme test) of at least 50%;
- Wearing a hearing aid in the nonimplanted ear is possible.
- Express interest and have affinity in participating in a study on music and
CIs
Exclusion criteria
- Disorders other than a hearing impairment that could affect the study
results, such as psychiatric disorders or physical disorders that would limit
their ability to undergo testing (e.g., movement disorders or blindness)
- Prelingual deafness
- Not able to complete three hours of consecutive testing
- Not native Dutch speaker
- Pregnant women
- Women who are breastfeeding
Design
Recruitment
Medical products/devices used
metc-ldd@lumc.nl
metc-ldd@lumc.nl
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In other registers
| Register | ID |
|---|---|
| CCMO | NL85189.058.23 |