This study reviewed the performance of universal neonatal hearing screening (UNHS) programs in 46 countries across North America, Europe, Asia, the Middle East, Oceania and Africa. The review was based on data collected from a 2004 survey of early hearing detection programs; responses to a 2006 survey of audiologists undertaken by the authors; a literature review of 55 articles, reports and internet sources from 1995 to 2007; and one 2006 Market Research Report. This data was compared to the UNHS benchmarks set by the Joint Committee on Infant Hearing (JCIH) in 2007. In the 21 countries where data on national screening coverage were available, the average coverage was 46% (JCIH recommends 95% or more). In the 32 countries where data on regional or local screening coverage were available, the average coverage was 64% (JCIH recommends 95% or more). In the 27 countries where data on referral rates were available, the average rate was 7% (JCIH recommends 4% or less). Finally, in the 16 countries where data on follow-up rate were available, the average rate was 63% (JCIH recommends 90% or more). These results highlight screening coverage and follow-up rate as the major inhibitors to the success of UNHS programs in many countries where UNHS programs are currently in operation. Factors contributing to these inhibitors are discussed.
{"title":"Progress towards Universal Neonatal Hearing Screening: A World Review","authors":"Julie Tann, W. Wilson, A. Bradley, Geoff Wanless","doi":"10.1375/AUDI.31.1.3","DOIUrl":"https://doi.org/10.1375/AUDI.31.1.3","url":null,"abstract":"This study reviewed the performance of universal neonatal hearing screening (UNHS) programs in 46 countries across North America, Europe, Asia, the Middle East, Oceania and Africa. The review was based on data collected from a 2004 survey of early hearing detection programs; responses to a 2006 survey of audiologists undertaken by the authors; a literature review of 55 articles, reports and internet sources from 1995 to 2007; and one 2006 Market Research Report. This data was compared to the UNHS benchmarks set by the Joint Committee on Infant Hearing (JCIH) in 2007. In the 21 countries where data on national screening coverage were available, the average coverage was 46% (JCIH recommends 95% or more). In the 32 countries where data on regional or local screening coverage were available, the average coverage was 64% (JCIH recommends 95% or more). In the 27 countries where data on referral rates were available, the average rate was 7% (JCIH recommends 4% or less). Finally, in the 16 countries where data on follow-up rate were available, the average rate was 63% (JCIH recommends 90% or more). These results highlight screening coverage and follow-up rate as the major inhibitors to the success of UNHS programs in many countries where UNHS programs are currently in operation. Factors contributing to these inhibitors are discussed.","PeriodicalId":114768,"journal":{"name":"Australian and New Zealand Journal of Audiology","volume":"143 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120939520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nuala Beahan, J. Kei, C. Driscoll, Rebecca Forde, Matthew Le Dilly, B. Charles
Establishing normative high frequency pure tone audiometry (HFPTA) threshold data would assist in monitoring ototoxicity in the paediatric oncology population. The present study aimed to acquire HFPTA (8-16 kHz) data from normally hearing children in a common clinical setting. Participants were 129 normally hearing children (63 males and 66 females), aged between 4 and 13 years (mean = 8.4 years; SD = 2.2 years). HFPTA thresholds at 8, 9, 10, 11.2, 12.5, 14, and 16 kHz were measured using an Interacoustics AC40 audiometer with Koss R/80 high frequency headphones. The results from the normative HFPTA data showed that the mean threshold and standard deviation values increased with frequency. A significant age effect was found with the youngest age group showing poorer HFPTA thresholds than their older counterparts. This indicates that children aged 4 to 6 years require a separate set of norms from children aged 7 years and older.
{"title":"High Frequency Pure Tone Audiometry (8-16 kHz) in Children: A Normative Study","authors":"Nuala Beahan, J. Kei, C. Driscoll, Rebecca Forde, Matthew Le Dilly, B. Charles","doi":"10.1375/AUDI.31.1.33","DOIUrl":"https://doi.org/10.1375/AUDI.31.1.33","url":null,"abstract":"Establishing normative high frequency pure tone audiometry (HFPTA) threshold data would assist in monitoring ototoxicity in the paediatric oncology population. The present study aimed to acquire HFPTA (8-16 kHz) data from normally hearing children in a common clinical setting. Participants were 129 normally hearing children (63 males and 66 females), aged between 4 and 13 years (mean = 8.4 years; SD = 2.2 years). HFPTA thresholds at 8, 9, 10, 11.2, 12.5, 14, and 16 kHz were measured using an Interacoustics AC40 audiometer with Koss R/80 high frequency headphones. The results from the normative HFPTA data showed that the mean threshold and standard deviation values increased with frequency. A significant age effect was found with the youngest age group showing poorer HFPTA thresholds than their older counterparts. This indicates that children aged 4 to 6 years require a separate set of norms from children aged 7 years and older.","PeriodicalId":114768,"journal":{"name":"Australian and New Zealand Journal of Audiology","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128232074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The aims of this pilot study were to determine any difference in short-term tinnitus relief between pieces of music with differing musical element extremes and to establish any possible relationship between musical aptitude and/or subjective response to music and the stimulus perceived to be of the greatest benefit to tinnitus relief. Baroque music pieces, which covered a range of musical elements, were presented to 13 participants with mild tinnitus along with silence and broadband noise. Ratings on visual analogue scales were obtained and correlation analysis revealed that two pieces of music in the major musical mode provided a significant reduction in tinnitus annoyance. The results of this study suggest that music is effective in the short-term management of tinnitus and musicianship does not influence music's effectiveness. However, there was a considerable variation in participants' preference for music suggesting individual listening preference should be considered in prescription of sound for treating tinnitus.
{"title":"Strategies for the Selection of Music in the Short-term Management of Mild Tinnitus","authors":"D. Hann, G. Searchfield, Michael Sanders, K. Wise","doi":"10.1375/AUDI.30.2.129","DOIUrl":"https://doi.org/10.1375/AUDI.30.2.129","url":null,"abstract":"The aims of this pilot study were to determine any difference in short-term tinnitus relief between pieces of music with differing musical element extremes and to establish any possible relationship between musical aptitude and/or subjective response to music and the stimulus perceived to be of the greatest benefit to tinnitus relief. Baroque music pieces, which covered a range of musical elements, were presented to 13 participants with mild tinnitus along with silence and broadband noise. Ratings on visual analogue scales were obtained and correlation analysis revealed that two pieces of music in the major musical mode provided a significant reduction in tinnitus annoyance. The results of this study suggest that music is effective in the short-term management of tinnitus and musicianship does not influence music's effectiveness. However, there was a considerable variation in participants' preference for music suggesting individual listening preference should be considered in prescription of sound for treating tinnitus.","PeriodicalId":114768,"journal":{"name":"Australian and New Zealand Journal of Audiology","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123539171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This article reports the real-ear-to-coupler differences (RECD) of 24 children (46 ears) and the repeatability of measures for 30 ears. For measuring real-ear sound pressure level (SPL), the probe tube must be positioned close to the eardrum in order to be representative of the SPL at the eardrum. In this study, an acoustic method that used a 6 kHz standing wave minimum in the real ear to place the probe tube tip at 9 mm from the eardrum was used with custom earmoulds for measuring the real-ear portion of the RECD. The results showed a mean insertion depth from the inter-tragal notch of 24.4 mm. Across frequencies between 0.25 to 4 kHz, the test-retest difference was less than 1.0 dB, and the reliability coefficients ranged from 0.7 to 0.9. The finding on insertion depths from the inter-tragal notch confirms the appropriateness of recommendations for an insertion depth of 25 mm in measuring RECD of children of this age. Variability in measured insertion depths across individuals to achieve the same relative distance from the eardrums supports the use of the 6 kHz notch method for accurate real-ear SPL measurements. Intersubject variability is several times greater than variability associated with repeated measurements of a single subject. The repeatability of this method compares favourably with previous literature on measures using foam/immitance tips with constant probe tube insertion depth.
{"title":"Repeatability of Real-ear-to-coupler Differences Measured by an Acoustic Method for Determining Probe Tube Insertion Depth","authors":"T. Ching, L. Britton","doi":"10.1375/AUDI.30.2.91","DOIUrl":"https://doi.org/10.1375/AUDI.30.2.91","url":null,"abstract":"This article reports the real-ear-to-coupler differences (RECD) of 24 children (46 ears) and the repeatability of measures for 30 ears. For measuring real-ear sound pressure level (SPL), the probe tube must be positioned close to the eardrum in order to be representative of the SPL at the eardrum. In this study, an acoustic method that used a 6 kHz standing wave minimum in the real ear to place the probe tube tip at 9 mm from the eardrum was used with custom earmoulds for measuring the real-ear portion of the RECD. The results showed a mean insertion depth from the inter-tragal notch of 24.4 mm. Across frequencies between 0.25 to 4 kHz, the test-retest difference was less than 1.0 dB, and the reliability coefficients ranged from 0.7 to 0.9. The finding on insertion depths from the inter-tragal notch confirms the appropriateness of recommendations for an insertion depth of 25 mm in measuring RECD of children of this age. Variability in measured insertion depths across individuals to achieve the same relative distance from the eardrums supports the use of the 6 kHz notch method for accurate real-ear SPL measurements. Intersubject variability is several times greater than variability associated with repeated measurements of a single subject. The repeatability of this method compares favourably with previous literature on measures using foam/immitance tips with constant probe tube insertion depth.","PeriodicalId":114768,"journal":{"name":"Australian and New Zealand Journal of Audiology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129947964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
F. Zhao, D. Stephens, H. Pryce, Yun Zheng, Danielle Bahgat
King-Kopetzky syndrome (KKS) is defined as the condition in which an individual complains of difficulties understanding speech in background noise, but has normal thresholds on pure tone audiometry. Various studies have claimed that a number of factors, including peripheral and central auditory function, linguistic, speech processes and psychological factors, may be responsible for the condition. Because of the large variety of the causes underlying this condition, the clinical management of such a multifactorial disorder is extremely diverse. The purpose of this article is to highlight important aspects of the appropriate rehabilitative management strategies that should be considered in audiology clinics to treat this unique population of patients, and provide guidelines leading towards their effective rehabilitative management.
{"title":"Rehabilitative management strategies in patients with King-Kopetzky syndrome","authors":"F. Zhao, D. Stephens, H. Pryce, Yun Zheng, Danielle Bahgat","doi":"10.1375/AUDI.30.2.119","DOIUrl":"https://doi.org/10.1375/AUDI.30.2.119","url":null,"abstract":"King-Kopetzky syndrome (KKS) is defined as the condition in which an individual complains of difficulties understanding speech in background noise, but has normal thresholds on pure tone audiometry. Various studies have claimed that a number of factors, including peripheral and central auditory function, linguistic, speech processes and psychological factors, may be responsible for the condition. Because of the large variety of the causes underlying this condition, the clinical management of such a multifactorial disorder is extremely diverse. The purpose of this article is to highlight important aspects of the appropriate rehabilitative management strategies that should be considered in audiology clinics to treat this unique population of patients, and provide guidelines leading towards their effective rehabilitative management.","PeriodicalId":114768,"journal":{"name":"Australian and New Zealand Journal of Audiology","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124565328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The long-term use of headband-worn bone vibrators has been associated with skin ulceration and, in severe cases, physical depression at the point of contact. The cause for this problem has been poorly understood and a mechanism is suggested for the skin condition. When the pressure applied at the bone vibrator contact area exceeds the capillary closure pressure, blood supply is cut off. This affects skin and underlying tissue. Eleven subjects were tested to measure bone-vibrator pressure on the head. Bone conduction hearing aid fittings result in pressure on the head that greatly exceeds capillary closure pressure. It is recommended that bone vibrator contact area and headband force be chosen to avoid exceeding a maximum contact pressure of 3.7 kPa over an extended period of time, measured in hours. If the headband force holding the bone vibrator against the head cannot be measured, then the bone vibrator should be fitted with only enough force to hold it in place against the mastoid process without excessive movement.
{"title":"Taking the Pressure Off Bone Conduction Hearing Aid Users","authors":"George Raicevich, Eric Burwood, H. Dillon","doi":"10.1375/AUDI.30.2.113","DOIUrl":"https://doi.org/10.1375/AUDI.30.2.113","url":null,"abstract":"The long-term use of headband-worn bone vibrators has been associated with skin ulceration and, in severe cases, physical depression at the point of contact. The cause for this problem has been poorly understood and a mechanism is suggested for the skin condition. When the pressure applied at the bone vibrator contact area exceeds the capillary closure pressure, blood supply is cut off. This affects skin and underlying tissue. Eleven subjects were tested to measure bone-vibrator pressure on the head. Bone conduction hearing aid fittings result in pressure on the head that greatly exceeds capillary closure pressure. It is recommended that bone vibrator contact area and headband force be chosen to avoid exceeding a maximum contact pressure of 3.7 kPa over an extended period of time, measured in hours. If the headband force holding the bone vibrator against the head cannot be measured, then the bone vibrator should be fitted with only enough force to hold it in place against the mastoid process without excessive movement.","PeriodicalId":114768,"journal":{"name":"Australian and New Zealand Journal of Audiology","volume":"389 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131851686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Otitis media (OM) is the most common cause of conductive hearing loss in children in India. Hearing loss secondary to OM has been reported to result in deficits in auditory processing. It was hypothesised that such deficits can be more deleterious if OM occurs in the first year of life as there is maximum development of auditory neural pathways during this period. Therefore, the purpose of this study was to document the effects of reduced auditory experience secondary to OM in the first year of life on speech identification. Another purpose was to study the persistence of the negative effects of auditory deprivation on speech perception. A cross-sectional approach and a standard group comparison design was used in the study. Twenty one children, aged 5.1 years to 6.6 years, who had OM between 6 months and 12 months of age participated in the study along with age and gender matched normal children. Speech identification scores were obtained from these children for natural words, spectrally distorted, and time compressed words. Results showed that the children with early OM had significantly poorer speech identification scores for spectrally and temporally distorted words compared to normal children. There was no significant difference in the speech identification scores for natural speech between the two groups. These results have important implications for the way the hearing needs of children with early onset OM are taken care of in the classrooms of schools in India, and perhaps other developing countries.
{"title":"Effect of Early Otitis Media on Speech Identification","authors":"M. Sandeep, M. Jayaram","doi":"10.1375/AUDI.30.1.38","DOIUrl":"https://doi.org/10.1375/AUDI.30.1.38","url":null,"abstract":"Otitis media (OM) is the most common cause of conductive hearing loss in children in India. Hearing loss secondary to OM has been reported to result in deficits in auditory processing. It was hypothesised that such deficits can be more deleterious if OM occurs in the first year of life as there is maximum development of auditory neural pathways during this period. Therefore, the purpose of this study was to document the effects of reduced auditory experience secondary to OM in the first year of life on speech identification. Another purpose was to study the persistence of the negative effects of auditory deprivation on speech perception. A cross-sectional approach and a standard group comparison design was used in the study. Twenty one children, aged 5.1 years to 6.6 years, who had OM between 6 months and 12 months of age participated in the study along with age and gender matched normal children. Speech identification scores were obtained from these children for natural words, spectrally distorted, and time compressed words. Results showed that the children with early OM had significantly poorer speech identification scores for spectrally and temporally distorted words compared to normal children. There was no significant difference in the speech identification scores for natural speech between the two groups. These results have important implications for the way the hearing needs of children with early onset OM are taken care of in the classrooms of schools in India, and perhaps other developing countries.","PeriodicalId":114768,"journal":{"name":"Australian and New Zealand Journal of Audiology","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123519245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. Goggin, R. Eikelboom, Gemma S Edwards, Vesna Maric, J. R. Anderson, Paul B Sander, Matthew A James, P. Ricciardo, Carsten Broeze, Lucy Atkins, G. Rajan, M. Atlas
An investigation of noise levels experienced by patrons and workers at entertainment venues, and a survey of exposure times, experience of adverse effects, attitudes towards noise levels and hearing protection, use of hearing protection, and knowledge of noise induced hearing loss (NIHL) education campaigns were undertaken. Noise level measurements were taken at various points in the venues and a questionnaire was conducted with 303 of the patrons. Mean recorded sound levels exceeded 95 dB (A) and mean exposure time was almost five hours per session. The majority (81%) of respondents had suffered auditory symptoms such as temporary hearing loss, tinnitus and headache. The use of earplugs was low, especially in females and those under 26 years old. The results suggest that regular patrons and staff of these venues are at risk of NIHL. Recollection of a NIHL education campaign does not appear to influence the rate of hearing protection use. Regulating the noise level of venues must be considered as the most effective strategy to prevent NIHL.
{"title":"Noise Levels, Hearing Disturbances, and Use of Hearing Protection at Entertainment Venues","authors":"L. Goggin, R. Eikelboom, Gemma S Edwards, Vesna Maric, J. R. Anderson, Paul B Sander, Matthew A James, P. Ricciardo, Carsten Broeze, Lucy Atkins, G. Rajan, M. Atlas","doi":"10.1375/AUDI.30.1.50","DOIUrl":"https://doi.org/10.1375/AUDI.30.1.50","url":null,"abstract":"An investigation of noise levels experienced by patrons and workers at entertainment venues, and a survey of exposure times, experience of adverse effects, attitudes towards noise levels and hearing protection, use of hearing protection, and knowledge of noise induced hearing loss (NIHL) education campaigns were undertaken. Noise level measurements were taken at various points in the venues and a questionnaire was conducted with 303 of the patrons. Mean recorded sound levels exceeded 95 dB (A) and mean exposure time was almost five hours per session. The majority (81%) of respondents had suffered auditory symptoms such as temporary hearing loss, tinnitus and headache. The use of earplugs was low, especially in females and those under 26 years old. The results suggest that regular patrons and staff of these venues are at risk of NIHL. Recollection of a NIHL education campaign does not appear to influence the rate of hearing protection use. Regulating the noise level of venues must be considered as the most effective strategy to prevent NIHL.","PeriodicalId":114768,"journal":{"name":"Australian and New Zealand Journal of Audiology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125122689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Australian and New Zealand Journal of Audiology: Patterns of Publication since 1979 and Trends toward the Future","authors":"A. Yonovitz, N. Dold","doi":"10.1375/AUDI.30.1.86","DOIUrl":"https://doi.org/10.1375/AUDI.30.1.86","url":null,"abstract":"","PeriodicalId":114768,"journal":{"name":"Australian and New Zealand Journal of Audiology","volume":"61 3-4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126204458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In a research study conducted at the National Acoustic Laboratories (NAL), a group of severely and pro-foundly hearing-impaired users of amplification was fit with wide dynamic range compression (WDRC) for the first time. Many of the study participants expressed reservations about their initial sound experience with the new devices, prompting the experimenters to develop a set of recommendations for facilitating the transition from linear to nonlinear amplification for long-term, full-time hearing aid users with severe and profound hearing loss. Recommended management strategies include: (1) optimisation of the gain/frequency response prior to the activation of compression; (2) in situ demonstrations of new hearing aid features; (3) the use of systematic trial periods; and (4) client counselling during frequent follow-up appointments. The recommendations are illustrated through the cases of three research study participants, each of whom demonstrated very different initial reactions both to the new test devices and to nonlinear amplification.
{"title":"Transitioning Hearing Aid Users with Severe and Profound Hearing Loss from Linear to Nonlinear Amplification: Three Case Studies","authors":"E. Convery, G. Keidser, L. Carter","doi":"10.1375/AUDI.30.1.73","DOIUrl":"https://doi.org/10.1375/AUDI.30.1.73","url":null,"abstract":"In a research study conducted at the National Acoustic Laboratories (NAL), a group of severely and pro-foundly hearing-impaired users of amplification was fit with wide dynamic range compression (WDRC) for the first time. Many of the study participants expressed reservations about their initial sound experience with the new devices, prompting the experimenters to develop a set of recommendations for facilitating the transition from linear to nonlinear amplification for long-term, full-time hearing aid users with severe and profound hearing loss. Recommended management strategies include: (1) optimisation of the gain/frequency response prior to the activation of compression; (2) in situ demonstrations of new hearing aid features; (3) the use of systematic trial periods; and (4) client counselling during frequent follow-up appointments. The recommendations are illustrated through the cases of three research study participants, each of whom demonstrated very different initial reactions both to the new test devices and to nonlinear amplification.","PeriodicalId":114768,"journal":{"name":"Australian and New Zealand Journal of Audiology","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131210858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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