User Preference and Reliability of Bilateral Hearing Aid Gain Adjustments

2008 ◽  
Vol 19 (02) ◽  
pp. 158-170 ◽  
Author(s):  
Benjamin W.Y. Hornsby ◽  
H. Gustav Mueller

The purpose of the current study was to evaluate the consistency and reliability of user adjustments to hearing aid gain and the resulting effects on speech understanding. Sixteen bilaterally aided individuals with hearing loss adjusted their hearing aid gain to optimize listening comfort and speech clarity while listening to speech in quiet and noisy backgrounds. Following these adjustments, participants readjusted their aids to optimize clarity and comfort while listening to speech in quiet. These final gain settings were recorded and compared to those provided by NAL-NL1 prescriptive targets. In addition, speech understanding was tested with the hearing aids set at target and user gain settings. Performance differences between the gain settings were then assessed.Study results revealed that although some listeners preferred more or less gain than prescribed, on average, user and prescribed gain settings were similar in both ears. Some individuals, however, made gain adjustments between ears resulting in "gain mismatches." These "mismatches" were often inconsistent across trials suggesting that these adjustments were unreliable. Speech testing results, however, showed no significant difference across the different gain settings suggesting that the gain deviations introduced in this study were not large enough to significantly affect speech understanding. El propósito del actual estudio fue evaluar la consistencia y la confiabilidad de los ajustes ganancia del auxiliar auditivo por parte del usuario, en cuanto a mejorar la comprensión del lenguaje. Dieciséis individuos hipoacúsicos con amplificación bilateral ajustaron la ganancia de sus auxiliares auditivos para optimizar la comodidad al escuchar y la claridad del lenguaje mientras escuchaban lenguaje en ambientes silenciosos y ruidosos. Después de estos ajustes, los participantes reajustaron sus auxiliares para optimizar la claridad y la comodidad al escuchar lenguaje en silencio. Estos ajustes finales de ganancia fueron registrados y comparados a aquellos indicados por las metas de prescripción del NAL-NL1. Además, se evaluó la comprensión del lenguaje con los auxiliares auditivos graduados en el nivel meta y en el nivel escogido por el usuario. Entonces se evaluaron las diferencias de desempeño entre dichos ajustes de ganancia.El estudio reveló que aunque algunos sujetos prefirieron más o menos ganancia de la prescrita, en promedio, los ajustes de ganancia del usuario y los prescritos fueron similares en ambos oídos. Algunos individuos, sin embargo, realizaron ajustes de ganancia entre sus dos oídos que resultaron en "desajustes de ganancia". Estos "desajustes" fueron a menudo inconsistentes en los diferentes ensayos sugiriendo que eran no confiables. Los resultados de las pruebas de lenguaje, sin embargo, no mostraron diferencias significativas entre los diferentes ajustes de ganancia, sugiriendo que las desviaciones de ganancia introducidas en este estudio no fueron lo suficientemente grandes para afectar significativamente la comprensión del lenguaje.

2020 ◽  
Vol 5 (1) ◽  
pp. 36-39
Author(s):  
Mariya Yu. Boboshko ◽  
Irina P. Berdnikova ◽  
Natalya V. Maltzeva

Objectives -to determine the normative data of sentence speech intelligibility in a free sound field and to estimate the applicability of the Russian Matrix Sentence test (RuMatrix) for assessment of the hearing aid fitting benefit. Material and methods. 10 people with normal hearing and 28 users of hearing aids with moderate to severe sensorineural hearing loss were involved in the study. RuMatrix test both in quiet and in noise was performed in a free sound field. All patients filled in the COSI questionnaire. Results. The hearing impaired patients were divided into two subgroups: the 1st with high and the 2nd with low hearing aid benefit, according to the COSI questionnaire. In the 1st subgroup, the threshold for the sentence intelligibility in quiet was 34.9 ± 6.4 dB SPL, and in noise -3.3 ± 1.4 dB SNR, in the 2nd subgroup 41.7 ± 11.5 dB SPL and 0.15 ± 3.45 dB SNR, respectively. The significant difference between the data of both subgroups and the norm was registered (p


2012 ◽  
Vol 23 (08) ◽  
pp. 606-615 ◽  
Author(s):  
HaiHong Liu ◽  
Hua Zhang ◽  
Ruth A. Bentler ◽  
Demin Han ◽  
Luo Zhang

Background: Transient noise can be disruptive for people wearing hearing aids. Ideally, the transient noise should be detected and controlled by the signal processor without disrupting speech and other intended input signals. A technology for detecting and controlling transient noises in hearing aids was evaluated in this study. Purpose: The purpose of this study was to evaluate the effectiveness of a transient noise reduction strategy on various transient noises and to determine whether the strategy has a negative impact on sound quality of intended speech inputs. Research Design: This was a quasi-experimental study. The study involved 24 hearing aid users. Each participant was asked to rate the parameters of speech clarity, transient noise loudness, and overall impression for speech stimuli under the algorithm-on and algorithm-off conditions. During the evaluation, three types of stimuli were used: transient noises, speech, and background noises. The transient noises included “knife on a ceramic board,” “mug on a tabletop,” “office door slamming,” “car door slamming,” and “pen tapping on countertop.” The speech sentences used for the test were presented by a male speaker in Mandarin. The background noises included “party noise” and “traffic noise.” All of these sounds were combined into five listening situations: (1) speech only, (2) transient noise only, (3) speech and transient noise, (4) background noise and transient noise, and (5) speech and background noise and transient noise. Results: There was no significant difference on the ratings of speech clarity between the algorithm-on and algorithm-off (t-test, p = 0.103). Further analysis revealed that speech clarity was significant better at 70 dB SLP than 55 dB SPL (p < 0.001). For transient noise loudness: under the algorithm-off condition, the percentages of subjects rating the transient noise to be somewhat soft, appropriate, somewhat loud, and too loud were 0.2, 47.1, 29.6, and 23.1%, respectively. The corresponding percentages under the algorithm-on were 3.0, 72.6, 22.9, and 1.4%, respectively. A significant difference on the ratings of the transient noise loudness was found between the algorithm-on and algorithm-off (t-test, p < 0.001). For overall impression for speech stimuli: under the algorithm-off condition, the percentage of subjects rating the algorithm to be not helpful at all, somewhat helpful, helpful, and very helpful for speech stimuli were 36.5, 20.8, 33.9, and 8.9%, respectively. Under the algorithm-on condition, the corresponding percentages were 35.0, 19.3, 30.7, and 15.0%, respectively. Statistical analysis revealed there was a significant difference on the ratings of overall impression on speech stimuli. The ratings under the algorithm-on condition were significantly more helpful for speech understanding than the ratings under algorithm-off (t-test, p < 0.001). Conclusions: The transient noise reduction strategy appropriately controlled the loudness for most of the transient noises and did not affect the sound quality, which could be beneficial to hearing aid wearers.


2020 ◽  
Vol 11 (SPL4) ◽  
pp. 184-187
Author(s):  
Jyothi Singamsetty ◽  
Ravikumar Raju ◽  
Sankaralingam P ◽  
Manoj Reddy P

Hearing loss is one among the persistent sensory deficiency in human populaces, involving added 250 million public in the world. Hearing aids are electrical equipments that aid in optimizing acuity of speech or other sounds. Outcome measures have a rising concern to audiologists, customers and hearing aid producers. To assess the user gratification of  government-funded hearing aids. To assess the digital quality of free hearing aids provided by the government. Method: The study was done on patients who are providing by overdue the ear hearing aids in a free hearing aid distribution camp under Support to Disabled persons for obtaining / fitting of aids/appliances (ADIP) scheme. A survey was done for 100 subjects by administering the SADL. The SADL gratification scores showed high gratification ratings for almost all aspects of the questionnaire. Approximately 80 % of the individuals using the hearing aids provided positive feedback and were tremendously satisfied with the performance of the hearing aid.Hence to conclude, ADIP scheme hearing aids do satisfy the users in most of the features such as speech understanding, speaking over the phone and enhanced hearing.


2019 ◽  
Vol 30 (05) ◽  
pp. 346-356 ◽  
Author(s):  
Tian Kar Quar ◽  
Cila Umat ◽  
Yong Yee Chew

AbstractThe use of probe microphone measures in hearing aid verification is often neglected or not fully used by practitioners. Some practitioners rely on simulated gain and output provided by manufacturer's fitting software to verify hearing aids.This study aims to evaluate the effectiveness of manufacturer’s prefit procedure in matching the prescribed real-ear targets. It also aims to study its correlated impact on the predicted speech perception in children with severe and profound hearing loss.This cross-sectional experiment was carried out by measuring the output of hearing aids based on prefit versus real-ear at low-, moderate-, and high-input levels. The predicted speech perception for different hearing aid fittings was determined based on the Speech Intelligibility Index (SII).Sixteen children (28 ears) aged between 4 and 7 yr, with severe to profound sensorineural hearing loss took part in the study.Two different types of hearing aids (Phonak and Unitron) were programmed based on their respective manufacturers’ Desired Sensation Levels (DSL) v5 Child procedure. The hearing aids were then verified using coupler-based measurements and individual real-ear-to-coupler differences. The prefit outputs were compared with the DSL v5 Child–prescribed outputs at low-, moderate-, and high-input levels. The hearing aids were then adjusted to closely match the prescribed output. The SIIs were calculated for the fittings before and after adjustment.Sixty four percent of fittings that were based on the prefit procedure achieved the optimal fit-to-targets, with less than 5-dB RMS deviations from the DSL v5 Child targets. After adjusting the hearing aids to attempt to meet the DSL v5 Child targets, 75% of the ears tested achieved the optimal fit-to-targets. On average, hearing aid outputs generated by the manufacturer’s prefit procedure had good and reasonable agreement with the DSL v5 Child–prescribed outputs at low- and mid-frequencies. Nonetheless, at 4000 Hz, the hearing aid output mostly fell below the DSL v5 Child–prescribed outputs. This was still the case even after the hearing aid was adjusted to attempt to match with the targets. At low input level, some prefit outputs were found to be higher than the prescribed outputs. The deviations of prefit outputs from the prescribed outputs were dependent on the type of hearing aid and input levels. There was no significant difference between the SII calculated for fittings based on the prefit and adjusted fit.Prefit procedure tends to produce outputs that were below the DSL v5 Child–prescribed outputs, with the largest mean difference at 4000 Hz. Even though the hearing aid gains were adjusted to attempt to match with the targets, the outputs were still below the targets. The limitations of hearing aids to match the DSL v5 Child targets at high-frequency region have resulted in no improvement in the children’s predicted speech perception.


2018 ◽  
Vol 29 (03) ◽  
pp. 243-254 ◽  
Author(s):  
Angeline Seeto ◽  
Grant D. Searchfield

AbstractAdvances in digital signal processing have made it possible to provide a wide-band frequency response with smooth, precise spectral shaping. Several manufacturers have introduced hearing aids that are claimed to provide gain for frequencies up to 10–12 kHz. However, there is currently limited evidence and very few independent studies evaluating the performance of the extended bandwidth hearing aids that have recently become available.This study investigated an extended bandwidth hearing aid using measures of speech intelligibility and sound quality to find out whether there was a significant benefit of extended bandwidth amplification over standard amplification.Repeated measures study designed to examine the efficacy of extended bandwidth amplification compared to standard bandwidth amplification.Sixteen adult participants with mild-to-moderate sensorineural hearing loss.Participants were bilaterally fit with a pair of Widex Mind 440 behind-the-ear hearing aids programmed with a standard bandwidth fitting and an extended bandwidth fitting; the latter provided gain up to 10 kHz.For each fitting, and an unaided condition, participants completed two speech measures of aided benefit, the Quick Speech-in-Noise test (QuickSIN™) and the Phonak Phoneme Perception Test (PPT; high-frequency perception in quiet), and a measure of sound quality rating.There were no significant differences found between unaided and aided conditions for QuickSIN™ scores. For the PPT, there were statistically significantly lower (improved) detection thresholds at high frequencies (6 and 9 kHz) with the extended bandwidth fitting. Although not statistically significant, participants were able to distinguish between 6 and 9 kHz 50% better with extended bandwidth. No significant difference was found in ability to recognize phonemes in quiet between the unaided and aided conditions when phonemes only contained frequency content <6 kHz. However significant benefit was found with the extended bandwidth fitting for recognition of 9-kHz phonemes. No significant difference in sound quality preference was found between the standard bandwidth and extended bandwidth fittings.This study demonstrated that a pair of currently available extended bandwidth hearing aids was technically capable of delivering high-frequency amplification that was both audible and useable to listeners with mild-to-moderate hearing loss. This amplification was of acceptable sound quality. Further research, particularly field trials, is required to ascertain the real-world benefit of high-frequency amplification.


Author(s):  
Kumars Akaberi ◽  
Hamid Jalilvand ◽  
Mohammad Ebrahim Mahdavi ◽  
Ahmadreza Nazeri1 ◽  
Seyed Mehdi Tabatabaee

Background and Aim: It is well known that hearing aid fitting is an effective approach to improve the communication ability of hearingimpaired people. In the past, most of the hearing aids were fitted unilaterally rather than bilaterally. Whereas the unilateral hearing aid fitting improves verbal communication partially, it causes late-onset auditory deprivation. The main aim of this study is to investigate the ANL for each ear among the users with unilateral hearing aid experience. Methods: A total of 23 participants were recruited (14 females, 9 males). The mean age was 74.65 years (ranged from 41 to 83). All subjects had bilateral symmetric sensorineural hearing loss. The most comfortable level (MCL), Background Noise Level (BNL), and acceptable noise level (ANL) were measured for ear with amplification experience and ear without experience. Results: MCL, BNL and ANL in the aided ear was 82.22, 73.48 and 8.74 respectively, in addition in the unaided ear the results for MCL, BNL and ANL was 81.78, 72.13 and 9.65 respectively. Comparing the mean values of MCL, BNL and ANL between two ears showed no significant difference. Conclusion: There was not any difference for BNL and ANL measures Keywords: Bilateral hearing loss; acceptable noise level; late onset auditory deprivation; Hearing aid 


Author(s):  
Golnaz Moradipour ◽  
Ahmadreza Nazeri ◽  
Hamid Jalilvand ◽  
Seyed Mehdi Tabatabaee

Background and Aim: One of the chronic hea­lth problems of the elderly is presbycusis, and one of the most important age-related changes in central auditory processing is dichotic listening deficit. The purpose of this study was to investi­gate the effects of using hearing aids on dichotic listening performance of the elderly with hearing loss by dichotic tests. Methods: In this cross-sectional study, randomi­zed dichotic digit test (RDDT) and dichotic auditory verbal memory test (DAVMT) were performed on 20 seniors with hearing loss (8 male, 12 female) aged 65−80 years. They were divided into two groups of test (with hearing aid, n = 10) and control (without hearing aid, n = 10). They were tested before and two months after the use of hearing aid and the results were analyzed using t-test for two independent variables. Results: There was a significant difference in the total DAVMT score in control group before and after the intervention (p < 0.001) and not in test group, but in terms of right and left ear DAVMT and RDDT scores, showed no significant diffe­rence in any groups. Moreover, there was no sig­nificant difference in the mean DAVMT score of the right ear and the mean RDDT score between groups, but in terms of the total DAVMT score, a significant difference between two groups was reported (p = 0.003). Conclusion: It can be said that the DAVMT has the ability to show adverse effects of hearing loss on recognition function and memory of the elde­rly.   Keywords: Randomized dichotic digit test; dichotic auditory verbal memory test; hearing aid; presbycusis


2015 ◽  
Vol 26 (03) ◽  
pp. 260-274 ◽  
Author(s):  
Teresa Y.C. Ching ◽  
Tian Kar Quar ◽  
Earl E. Johnson ◽  
Philip Newall ◽  
Mridula Sharma

Background: An important goal of providing amplification to children with hearing loss is to ensure that hearing aids are adjusted to match targets of prescriptive procedures as closely as possible. The Desired Sensation Level (DSL) v5 and the National Acoustic Laboratories’ prescription for nonlinear hearing aids, version 1 (NAL-NL1) procedures are widely used in fitting hearing aids to children. Little is known about hearing aid fitting outcomes for children with severe or profound hearing loss. Purpose: The purpose of this study was to investigate the prescribed and measured gain of hearing aids fit according to the NAL-NL1 and the DSL v5 procedure for children with moderately severe to profound hearing loss; and to examine the impact of choice of prescription on predicted speech intelligibility and loudness. Research Design: Participants were fit with Phonak Naida V SP hearing aids according to the NAL-NL1 and DSL v5 procedures. The Speech Intelligibility Index (SII) and estimated loudness were calculated using published models. Study Sample: The sample consisted of 16 children (30 ears) aged between 7 and 17 yr old. Data Collection and Analysis: The measured hearing aid gains were compared with the prescribed gains at 50 (low), 65 (medium), and 80 dB SPL (high) input levels. The goodness of fit-to-targets was quantified by calculating the average root-mean-square (RMS) error of the measured gain compared with prescriptive gain targets for 0.5, 1, 2, and 4 kHz. The significance of difference between prescriptions for hearing aid gains, SII, and loudness was examined by performing analyses of variance. Correlation analyses were used to examine the relationship between measures. Results: The DSL v5 prescribed significantly higher overall gain than the NAL-NL1 procedure for the same audiograms. For low and medium input levels, the hearing aids of all children fit with NAL-NL1 were within 5 dB RMS of prescribed targets, but 33% (10 ears) deviated from the DSL v5 targets by more than 5 dB RMS on average. For high input level, the hearing aid fittings of 60% and 43% of ears deviated by more than 5 dB RMS from targets of NAL-NL1 and DSL v5, respectively. Greater deviations from targets were associated with more severe hearing loss. On average, the SII was higher for DSL v5 than for NAL-NL1 at low input level. No significant difference in SII was found between prescriptions at medium or high input level, despite greater loudness for DSL v5 than for NAL-NL1. Conclusions: Although targets between 0.25 and 2 kHz were well matched for both prescriptions in commercial hearing aids, gain targets at 4 kHz were matched for NAL-NL1 only. Although the two prescriptions differ markedly in estimated loudness, they resulted in comparable predicted speech intelligibility for medium and high input levels.


Author(s):  
Farzad Hamzehpour ◽  
Aghil Absalan ◽  
Ebrahim Pirasteh ◽  
Zahra Sharafi ◽  
Hamideh Arbabsarjoo

Abstract Background Since the hearing and vestibular organs are close to each other, the correlation between hearing and balance is one of the principal issues, especially in people with hearing loss. Purpose In this study, the effect of the auditory system on human balance performance was investigated by comparing the balance status of hearing-impaired children in the aided and unaided situations. Research Design In this cross-sectional study a group of children were assigned the task to compare the balance sways in two aided and unaided situations. Study Sampling A total of 90 children aged 7 to 10 years with severe to profound congenital hearing loss and the healthy vestibular system of both genders served as the research population. Data Collection and Analysis After a complete evaluation of the hearing and vestibular system and validation of the hearing aid performance, body sway was recorded using the pediatric clinical test of sensory interaction for balance in aided and unaided situations in the presence of background noise from the speaker. Results According to this study, there was no difference in body sway in aided and unaided situations for conditions 1, 2, and 3. In comparison, in conditions 4, 5, and 6 of the test, there was a statistically significant difference in body sway between aided and unaided situations. However, there was no difference in the sway of the body in aided and unaided situations between girls and boys. Conclusion According to this study, hearing aids can improve balance in challenging listening environments.


2016 ◽  
Vol 6 (2) ◽  
pp. 21-26
Author(s):  
Husnija Hasanbegović ◽  
◽  
Sanela Čajlaković Kurtalić ◽  
Esad H. Mahmutović ◽  
◽  
...  

The aim of this study was to determine the cause and effect relationship of noise and hearing status users of hearing aids. It was assumed that increased continously and intensity of noise in urban areas has resulted in postponement of the assessment of hearing impairment in relation to age. Also, it was assumed that the inferior status hearing aid users of hearing aids in the city, compared to the auditory user status hearing aids from the suburbs. The sample (N = 60) consisted of the hearing impaired, which is assigned to a hearing aid. The sample was selected randomly and divided into two sub-samples, 30 patients from the city and 30 patients from the suburbs. The survey was administered questionnaire intensity noise levels and users of hearing aids. The processing of the collected data was used descriptive analysis, and testing the difference T - test and Mann Whitney U test, with the selected level of statistical significance 0.05. The results showed a statistically significant difference in the prevalence of users of hearing aids urban and suburban areas, in relation to the age of the respondents. The population of urban settlements are likely accustomed to communicate on a higher level of intensity socio-voice communication, and thus later in life notice hearing loss and later appears at diagnosis. Results hearing loss and hearing loss percentage by Fowler-Sabine-in, in clinical terms, they showed slight differences, with somewhat unfavorable hearing status urban, suburban relative to the population. Not confirmed the statistical significance of these differences, which are only partially can be argued that increasing the intensity of noise in urban areas has resulted in inferior status hearing aid users of hearing aids in this, in relation to the hearing aid user status from the suburbs.


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