The first sub-project (part 1) aims to identify and characterize realistic dynamic scenarios in which speech communication takes place. In the second sub-project (part 2) we will investigate speech recognition performance in those realistic dynamic…
ID
Source
Brief title
Condition
- Hearing disorders
Synonym
Research involving
Sponsors and support
Intervention
Outcome measures
Primary outcome
o Set of relevant listening scenarios
o Set of auditory abilities that are critical for spatial speech perception in
complex, dynamic environments.
o Subset of auditory abilities that are reduced in hearing impaired listeners
o Signal attributes that should be provided or compensated in rehabilitation
o An efficient set of laboratory tests to adequately assess auditory abilities
in realistic and dynamic environments, in both unaided and aided conditions for
listeners with hearing impairments.
Disseminating results of this study will lead to more appropriate clinical
tests and will guide clinicians and hearing aid industries in enabling
participation for individuals with impaired hearing.
Secondary outcome
o Sets of recordings from relevant listening scenarios as well as sets of
staged laboratory recordings including
• a single moving target and stationary located interferers
• moving interferers and single stationary located target
• multiple spatially separated targets, as in a group conversation
o Signal attributes that are used in these scenarios
o Setup of real-time head-motion-compensation system (RT-VAS; real time virtual
audio space) in Amsterdam
Background summary
The primary issue of concern in audiology is the diagnosis and rehabilitation
of auditory capacity: hearing loss is the usual reason for referral to a
hearing specialist. The ultimate goal is participation in everyday life,
despite hearing loss and its consequences. However, it has never been
established systematically what configurations (in terms of S/N ratio, masker
pattern, masker content, spatial scenario, relative movement etc.) occur in
relevant everyday life communication settings and which signal attributes
normal hearing and hearing impaired persons utilize to process auditory
information in those situations. The underlying hypothesis is that hearing
impaired listeners are not able to utilize all signal attributes that are used
by normal hearing listeners.
Study objective
The first sub-project (part 1) aims to identify and characterize realistic
dynamic scenarios in which speech communication takes place. In the second
sub-project (part 2) we will investigate speech recognition performance in
those realistic dynamic listening situations for individuals with normal and
impaired hearing. We want to know what signal attributes are used in those
situations by normal hearing listeners, and how listeners with impaired hearing
are capable of processing the signal cues. Specifically we will look at the
influence of head movements on speech recognition.
Study design
Exploratory (part 1) and cross-sectional study (part 2).
Study burden and risks
For this study, participants will attend one test session of 3-4 hours. All
subjects will undergo audiometry and speech reception clinical tests to assess
their hearing. For part 1, five normal hearing subjects will subjectively judge
the recorded and created signals. For part 2, twelve normal hearing subjects
will be tested with a real-time virtual auditory space setup to determine the
influence of head movements on speech recognition and identify the signal
attributes normal hearing utilize to process auditory information in realistic
situations. Subsequently, 12 normal hearing and 24 hearing impaired subjects
will be tested using a setup of laboratory tests to assess processing of
relevant signal attributes by varying those attributes. Participants are at no
health risk and not exposed to harmful sound intensities.
De Boelelaan 1118
Amsterdam 1081 HZ
NL
De Boelelaan 1118
Amsterdam 1081 HZ
NL
Listed location countries
Age
Inclusion criteria
Part 1:
5 normal hearing subjects:
- normal hearing (pure-tone air-conduction thresholds not exceeding 20 dB HL at any octave frequency from 250 Hz to 4000 Hz in both ears);
- age 18 years or older.;Part 2:
Part 2a:
12 normal hearing subjects:
- normal hearing (pure-tone air-conduction thresholds not exceeding 20 dB HL at any octave frequency from 250 Hz to 4000 Hz in both ears);
- age 18 years or older.;Part 2b:
study group: 24 hearing impaired subjects:
- hearing impaired (average of pure-tone air-conduction thresholds at 500 Hz, 1000 Hz and 2000 Hz of 35dB HL or higher in both ears);
- essentially symmetrical hearing loss (absolute differences not exceeding 15 dB at any octave frequency from 250 Hz to 4000 Hz);
- aided speech recognition (monosyllables) >= 75%;
- Age distributed over wide range, from 18 years and older.;reference group: 12 normal hearing subjects:
- normal hearing (pure-tone air-conduction thresholds not exceeding 20 dB HL at any octave frequency from 250 Hz to 4000 Hz in both ears);
- age-matched to hearing impaired group.;all subjects, part 1 and 2:
- Dutch as native language.
Exclusion criteria
- Conductive hearing loss (average air-bone gap at 500 Hz, 1000 Hz and 2000 Hz exceeding 10 dB or air-bone-gap exceeding 10 dB at one or more frequencies and abnormal tympanogram in either ear);
- serious/relevant medical issues;
- other native language;
- diagnosed cognitive delay (IQ<80);
- specific language impairment (SLI) or psychiatric disorder (e.g. ADHD).
Design
Recruitment
Followed up by the following (possibly more current) registration
No registrations found.
Other (possibly less up-to-date) registrations in this register
No registrations found.
In other registers
| Register | ID |
|---|---|
| CCMO | NL50123.029.14 |