Abstract:
OBJECTIVE:To measure masked detection and reaction thresholds for two reverse alarms (tonal and broadband) and compare results to available standards and psychoacoustic criteria for setting alarm levels. DESIGN:Alarm detection and reaction thresholds were adaptively measured in 80-dBA background noises without hearing protection (Experiment 1), and with a passive earmuff-style hearing protection device (HPD) (Experiment 2). STUDY SAMPLE:Twenty-four young adults with normal hearing in each experimental group. RESULTS:Reverse alarms remained audible at levels well-below background noises [thresholds: -11 to -25 dB signal-to-noise ratio (SNR)], with and without the selected HPD. Detection was more influenced by alarm and noise type, while reaction was more susceptible to HPD use. HPD use resulted in lower detection thresholds by up to 2.5 dB compared to unprotected listening but increased reaction thresholds by 5-10 dB depending on the alarm. CONCLUSIONS:Since noise type appears to have a more limited effect on reaction thresholds, adjusting alarms based on a global dBA method appears preferable to methods based on masked detection thresholds. However, while the >0 dB SNR recommended in ISO 9533 seems adequate for unprotected listening, an additional 5-10 dB may be warranted to elicit the same reaction when the selected HPD is used.
journal_name
Int J Audioljournal_title
International journal of audiologyauthors
Laroche C,Giguère C,Vaillancourt V,Roy K,Pageot LP,Nélisse H,Ellaham N,Nassrallah Fdoi
10.1080/14992027.2017.1400188subject
Has Abstractpub_date
2018-02-01 00:00:00pages
S51-S60issue
sup1eissn
1499-2027issn
1708-8186journal_volume
57pub_type
杂志文章abstract:OBJECTIVE:An experiment was conducted to investigate the possibility that speech perception could be improved for some cochlear implant (CI) users by adjustment of the frequency allocation to the electrodes, following assessment of pitch perception along the electrode array. STUDY SAMPLE:Thirteen adult CI users with M...
journal_title:International journal of audiology
pub_type: 杂志文章
doi:10.1080/14992027.2018.1516048
更新日期:2019-03-01 00:00:00
abstract::The purpose of this study was to determine and to compare the overall intelligibility, articulation, resonance, and voice characteristics in children using cochlear implants (CI) and children using conventional hearing aids (HA). Nine prelingually deaf children using CI and six children with a prelingual severe hearin...
journal_title:International journal of audiology
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abstract::Audiometric measurements through a hearing aid ('in-situ') may facilitate provision of hearing services where these are limited. This study investigated the validity and reliability of in-situ air conduction hearing thresholds measured with closed and open domes relative to thresholds measured with insert earphones, a...
journal_title:International journal of audiology
pub_type: 杂志文章
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journal_title:International journal of audiology
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abstract::Children (n = 141) referred to 5 clinical sites for auditory processing disorder assessment were tested with two dichotic listening tests, one with word pairs and the other with pairs of digits, as part of a comprehensive diagnostic battery. Scores from the Randomized Dichotic Digits Test and the Dichotic Words Test w...
journal_title:International journal of audiology
pub_type: 杂志文章,多中心研究
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journal_title:International journal of audiology
pub_type: 杂志文章,多中心研究
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journal_title:International journal of audiology
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journal_title:International journal of audiology
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journal_title:International journal of audiology
pub_type: 杂志文章
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journal_title:International journal of audiology
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更新日期:2018-06-01 00:00:00
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journal_title:International journal of audiology
pub_type: 杂志文章,多中心研究
doi:
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pub_type: 临床试验,杂志文章
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更新日期:2009-04-01 00:00:00
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更新日期:2017-07-01 00:00:00
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更新日期:2014-03-01 00:00:00
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