scholarly journals Threshold of hearing for pure tone under free-field listening conditions.

1994 ◽  
Vol 15 (3) ◽  
pp. 159-169 ◽  
Author(s):  
Hisashi Takeshima ◽  
Yôiti Suzuki ◽  
Masazumi Kumagai ◽  
Toshio Sone ◽  
Takeshi Fujimori ◽  
...  
Keyword(s):  
Pure Tone ◽  
Free Field

scholarly journals Equal-loudness levels measured with the method of constant stimuli Equal-loudness level contours for pure tone under free-field listening conditions (II).

1997 ◽  
Vol 18 (6) ◽  
pp. 337-340 ◽  
Author(s):  
Hisashi Takeshima ◽  
Yôiti Suzuki ◽  
Masazumi Kumagai ◽  
Toshio Sone ◽  
Takeshi Fujimori ◽  
...  
Keyword(s):  
Pure Tone ◽  
Free Field ◽  
Loudness Level ◽  
Method Of Constant Stimuli

scholarly journals Equal-loudness level contours for pure tone under free field listening conditions. (I). Some data and considerations on experimental conditions.

1989 ◽  
Vol 10 (6) ◽  
pp. 329-338 ◽  
Author(s):  
Seiki Suzuki ◽  
Yoiti Suzuki ◽  
Shunichi Kono ◽  
Toshio Sone ◽  
Masazumi Kumagai ◽  
...  
Keyword(s):  
Pure Tone ◽  
Free Field ◽  
Experimental Conditions ◽  
Loudness Level

Estimation of the Benefit of Bone-Anchored Hearing Aids

1994 ◽  
Vol 103 (11) ◽  
pp. 872-878 ◽  
Author(s):  
George G. Browning ◽  
Stuart Gatehouse
Keyword(s):  
Hearing Aids ◽  
Pure Tone ◽  
Bone Conduction ◽  
Free Field ◽  
Chronic Otitis Media ◽  
Valuable Alternative ◽  
Hearing Ability ◽  
Bone Anchored Hearing Aid ◽  
Bone Conduction Hearing ◽  
Air Conduction

Implantable bone conduction hearing aids are a valuable alternative to conventional aids for those who cannot use a conventional air conduction aid or find it difficult to use because of an aural discharge, most commonly due to chronic otitis media. Previously reported series of the use of a bone-anchored hearing aid (BAHA) come from the originators of this device, and an independent report of their benefit and use, especially in previous air conduction aid users, would be of value. Twenty-three patients were evaluated at least 6 months after implantation of a BAHA. All 7 previous bone conduction aid users were delighted with their BAHA, reporting increased comfort and hearing benefit that was backed by audiometric evidence. Of the 16 individuals who previously used an air conduction aid, 11 (69%) were delighted users of their BAHA. Unfortunately, the other 5 (31%) reverted to solely using their air conduction aid. There was no obvious predictor as to how these individuals might have been identified prior to implantation. In particular, their pure tone thresholds, especially the bone conduction thresholds, were no different from those of the 11 BAHA users. However, in free field audiometry, the users gained superior benefit from their BAHA compared to their air conduction aid, whereas the nonusers did not. In conclusion, in all series to date, previous users of a conventional bone conduction aid have been delighted users of a BAHA and have gained superior audiometric benefit. This is not necessarily the case with previous air conduction aid users. As most patients rate hearing ability to be more important than absence of an aural discharge, it is important to develop methods that might predict benefit from a BAHA prior to implantation.

scholarly journals A comparative study of smartphone based app with free field hearing for possible use as a screening test

2017 ◽  
Vol 3 (3) ◽  
pp. 710
Author(s):  
Himanshu Swami ◽  
Aditya Bhargava ◽  
Sabarigirish K. ◽  
Arvind B. M.
Keyword(s):  
Hearing Loss ◽  
Comparative Study ◽  
Gold Standard ◽  
Military Service ◽  
Pure Tone ◽  
Early Stage ◽  
Pearson Correlation ◽  
Free Field ◽  
Pure Tone Audiometry ◽  
Hearing Assessment

<p class="abstract"><strong><span lang="EN-US">Background:</span></strong>Hearing loss is an invisible injury that has been viewed as an acceptable by-product of military service. It is imperative to detect hearing loss at early stage to take immediate remedial measures. In Indian armed forces the current method of assessment of hearing is primarily by Free Field Hearing which is obsolete and has numerous shortcomings. We contucted a study using free iOS application to detect hearing loss. The objectives of the study were to investigate the validity and reproducibility of app based hearing assement and free field hearing with clinical pure tone audiometer as gold standard. It is cross sectional intra-subject comparative study</p><p class="abstract"><strong><span lang="EN-US">Methods:</span></strong>The study was conducted at CHAF where 200 patients were accrued. Hearing assessment was carried out by Pure Tone Audiometry (PTA) which is gold standard. Thereafter these patients were subjected to hearing assessment by using windows application “freehearingtestsoftware.com” and by free field hearing (FFH).  </p><p class="abstract"><strong><span lang="EN-US">Results:</span></strong>Hearing assessment by FFH and hearing check app was compared with PTA. Hearing check app was found to be more sensitive than FFH (98% and 73%). Both modalities had high specificity (95% and 99%). The test retest reproducibility measured with Pearson correlation coefficient was high (0.99) with hearing check app.</p><p class="abstract"><strong><span lang="EN-US">Conclusions:</span></strong>Smart phone application like Hearing check app is a cheap and effective way to assess hearing with reasonable accuracy. It’s high sensitivity and high test retest reproducibility makes it an ideal tool for screening and early detection of hearing loss replacing out-dated free field hearing.</p><p class="abstract"><span lang="EN-US"> </span></p>

scholarly journals A Study on Effects of Diabetes Mellitus on Auditory System

2017 ◽  
Vol 24 (1) ◽  
pp. 49-55
Author(s):  
Kamal Deep Joshi ◽  
Jeevan Ramachandra Galagali ◽  
Sanajeet Kumar Singh
Keyword(s):  
Hearing Loss ◽  
Pure Tone ◽  
Statistical Tests ◽  
Free Field ◽  
Pure Tone Audiometry ◽  
Diabetic Patients ◽  
Clinical Tests ◽  
Auditory Dysfunction ◽  
Auditory Functions

AbstractBackground and aims: Auditory dysfunctions in diabetes are known but are difficult to identify. Role of clinical tests and routine audiological tools are still to be established in early detection of diabetes-related auditory complication. The study aims to establish a link between diabetes and auditory dysfunction and assess the role of clinical examination and audiological investigations as a sensitive indicator of auditory dysfunctions in diabetics.Material and Methods: The auditory functions of 100 diabetic patients and 100 non-diabetics were assessed by clinical otological examination including free-field hearing and pure tone audiometry (PTA) in this descriptive study. The data for diabetic and non-diabetic groups and effect of age on auditory functions were analyzed with suitable statistical tests using SPSS 2.0 software with an error margin of 10%.Results: The demographical variables were comparable in both groups. The results showed a decline in free field hearing, which are furthur adversely affected by duration of diabetes and patient’s age. Overall pure tone thresholds were not significantly higher in diabetics, however the thresholds were higher in diabetics in older age groups. The hearing loss appears at an early age in diabetics but gradually becomes indistinguishable from age-related hearing loss.Conclusions: The auditory dysfunction can be linked to diabetes. It is usually not detectable at earliest stages with routine clinical and audiological tests but the clinical tests and pure tone audiometry can have a utility in monitoring the auditory dysfunction.

scholarly journals Screening for Hearing Impairment in Older Adults by Smartphone-Based Audiometry, Self-Perception, HHIE Screening Questionnaire, and Free-Field Voice Test: Comparative Evaluation of the Screening Accuracy With Standard Pure-Tone Audiometry

10.2196/17213 ◽  
2020 ◽  
Vol 8 (10) ◽  
pp. e17213
Author(s):  
Lok Yee Joyce Li ◽  
Shin-Yi Wang ◽  
Cheng-Jung Wu ◽  
Cheng-Yu Tsai ◽  
Te-Fang Wu ◽  
...  
Keyword(s):  
Older Adults ◽  
Hearing Loss ◽  
Hearing Impairment ◽  
Pure Tone ◽  
Free Field ◽  
Pure Tone Audiometry ◽  
High Sensitivity ◽  
High Specificity ◽  
The Self ◽  
Self Perception

Background Hearing impairment is the most frequent sensory deficit in humans, affecting more than 360 million people worldwide. In fact, hearing impairment is not merely a health problem, but it also has a great impact on the educational performance, economic income, and quality of life. Hearing impairment is therefore an important social concern. Objective We aimed to evaluate and compare the accuracy of self-perception, Hearing Handicap Inventory for the Elderly-Screening (HHIE-S) questionnaire, free-field voice test, and smartphone-based audiometry as tests for screening moderate hearing impairment in older adults in China. Methods In this study, 41 patients were recruited through a single otology practice. All patients were older than 65 years. Patients with otorrhea and cognitive impairment were excluded. Moderate hearing impairment was defined as mean hearing thresholds at 500, 1000, 2000, and 4000 Hz >40 dB hearing loss (pure-tone average > 40 dB hearing loss). All patients completed 5 hearing tests, namely, the self-perception test, HHIE-S questionnaire test, free-field voice test, smartphone-based audiometry test, and standard pure-tone audiometry by the same audiologist. We compared the results of these tests to the standard audiogram in the better-hearing ear. Results The sensitivity and the specificity of the self-perception test were 0.58 (95% CI 0.29-0.84) and 0.34 (95% CI 0.19-0.54), respectively. The sensitivity and the specificity of the HHIE-S questionnaire test were 0.67 (95% CI 0.35-0.89) and 0.31 (95% CI 0.316-0.51), respectively. The sensitivity and the specificity of the free-field voice test were 0.83 (95% CI 0.51-0.97) and 0.41 (95% CI 0.24-0.61), respectively. The sensitivity and the specificity of the smartphone-based audiometry test were 0.92 (95% CI 0.60-0.99) and 0.76 (95% CI 0.56-0.89), respectively. Smartphone-based audiometry correctly diagnosed the presence of hearing loss with high sensitivity and high specificity. Conclusions Smartphone-based audiometry may be a dependable screening test to rule out moderate hearing impairment in the older population.

scholarly journals Restoration of High Frequency Auditory Perception After Robot-Assisted or Manual Cochlear Implantation in Profoundly Deaf Adults Improves Speech Recognition

2021 ◽  
Vol 8 ◽  
Author(s):  
Renato Torres ◽  
Hannah Daoudi ◽  
Ghizlene Lahlou ◽  
Olivier Sterkers ◽  
Evelyne Ferrary ◽  
...  
Keyword(s):  
Speech Perception ◽  
Cochlear Implantation ◽  
High Frequency ◽  
Pure Tone ◽  
Free Field ◽  
Electrode Array ◽  
Electrode Arrays ◽  
Robot Assisted ◽  
Deaf Adults ◽  
Post Implantation

Background and Purpose: Robot-assisted cochlear implantation has recently been implemented in clinical practice; however, its effect on hearing outcomes is unknown. The aim of this preliminary study was to evaluate hearing performance 1 year post-implantation whether the electrode array was inserted manually or assisted by a robot.Methods: Forty-two profoundly deaf adults were implanted either manually (n = 21) or assisted by a robot (RobOtol®, Collin, Bagneux, France) with three different electrode array types. Participants were paired by age, and electrode array type. The scalar position of the electrode array in the cochlea was assessed by 3D reconstruction from the pre- and post-implantation computed tomography. Pure-tone audiometry and speech perception in silence (percentage of disyllabic words at 60 dB) were tested on the implanted ear 1 year post-implantation in free-field conditions. The pure-tone average was calculated at 250–500–750 Hz, 500–1,000–2,000–3,000 Hz, and 3,000–4,000–8,000 Hz for low, mid, and high frequencies, respectively.Results: One year after cochlear implantation, restoration of the high-frequency thresholds was associated with better speech perception in silence, but not with low or mid frequencies (p &lt; 0.0001; Adjusted R2 = 0.64, polynomial non-linear regression). Although array translocation was similar using either technique, the number of translocated electrodes was lower when the electrode arrays had been inserted with the assistance of the robot compared with manual insertion (p = 0.018; Fisher's exact test).Conclusion: The restoration of high-frequency thresholds (3,000–4,000–8,000 Hz) by cochlear implantation was associated with good speech perception in silence. The numbers of translocated electrodes were reduced after a robot-assisted insertion.

Clinical role of informal tests of hearing

1989 ◽  
Vol 103 (1) ◽  
pp. 7-11 ◽  
Author(s):  
G. G. Browning ◽  
I. R. C. Swan ◽  
K. K. Chew
Keyword(s):  
Pure Tone ◽  
Tuning Fork ◽  
Bone Conduction ◽  
Free Field ◽  
Pure Tone Audiometry ◽  
Comparison Method ◽  
Clinical Tests ◽  
Clinical Role ◽  
Modern Methods

AbstractClinical tests of hearing are regularly used in adults but their role, now that pure-tone audiometry is almost universally available, has not been evaluated by modern methods of analysis including sensitivity and specificity.Free-field voice testing was carried out in 101 patients and the Rinne tuning-fork test in a different group of 127 patients prior to clinical or audiometric evaluation. The results were subsequently compared to air and bone conduction pure-tone thresholds assessed using rigorous standards.Depending on the audiometric definition as to what constitutes a hearing impairment, the sensitivity of free-field voice testing to identify such an impairment because of an inability to hear a whispered voice at two feet (60 cm.) was 86 per cent or better with the specificity being in the region of 90 per cent.In the Rinne test the 256 Hz fork was superior to the 512 Hz fork (p<0.05) and the loudness comparison method superior to the threshold decay method (p<0.01) in detecting an air-bone gap. Combining the responses to the two forks did not improve the results. The Rinne test with the 256 Hz fork will identify correctly 48 per cent of individuals with a 15 dB, 69 per cent with a 20 dB, 87 per cent with a 25 dB, and 95 per cent with a 30 dB conductive impairment. In all instances the specificity is greater than 90 per cent.

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