The Effects of Expansion Time Constants on the Objective Performance of Hearing Instrument Users

2005 ◽  
Vol 16 (08) ◽  
pp. 614-621 ◽  
Author(s):  
Patrick N. Plyler ◽  
Ashley Blair Hill ◽  
Timothy D. Trine
Keyword(s):  
Hearing Loss ◽  
Time Constant ◽  
Test Results ◽  
Connected Speech ◽  
Time Constants ◽  
Speech Test ◽  
Hearing In Noise ◽  
Expansion Time ◽  
Objective Performance ◽  
Noise Test

The present study investigated the effects of expansion time constants on the objective performance of 20 hearing instrument users fitted binaurally with digital in-the-ear products. Objective performance was evaluated in quiet using the Connected Speech Test and in noise using the Hearing in Noise Test. Results indicated that objective performance in quiet and in noise decreased as the expansion time constant increased. Furthermore, expansion time constants affected the objective performance of listeners with varying degrees of hearing loss in a similar manner.

The Effects of Expansion on the Objective and Subjective Performance of Hearing Instrument Users

2005 ◽  
Vol 16 (02) ◽  
pp. 101-113 ◽  
Author(s):  
Patrick N. Plyler ◽  
Ashley Blair Hill ◽  
Timothy D. Trine
Keyword(s):  
Hearing Loss ◽  
Daily Basis ◽  
Expansion Ratio ◽  
Connected Speech ◽  
Speech Test ◽  
Hearing In Noise ◽  
Objective Performance ◽  
Expansion Condition ◽  
Preference Ratings ◽  
Noise Test

The present study investigated the effects of expansion on the objective and subjective performance of 20 hearing instrument users fitted binaurally with digital ITE products. Objective performance was evaluated in quiet using the Connected Speech Test and in noise using the Hearing in Noise Test. Subjective performance was evaluated in two ways: (a) by having each participant rate their satisfaction regarding the amount of noise reduction they perceived in each expansion condition on a daily basis and (b) by having each participant indicate which expansion condition they preferred following the completion of a two-week trial. Results indicated that expansion significantly reduced low-level speech perception performance; however, satisfaction and preference ratings significantly increased when using expansion. The effect of degree of hearing loss, expansion kneepoint, and expansion ratio on the effectiveness of expansion for a given listener was discussed.

Amplified Earmuffs

2005 ◽  
Vol 14 (1) ◽  
pp. 80-85 ◽  
Author(s):  
Thomas G. Dolan ◽  
Dennis O’Loughlin
Keyword(s):  
Hearing Loss ◽  
Speech Intelligibility ◽  
Noise Exposure ◽  
High Input ◽  
Industrial Noise ◽  
Low Input ◽  
Speech In Noise ◽  
Hearing In Noise ◽  
Noise Test

Purpose: To determine how amplified earmuffs affect the intelligibility of speech in noise for people with hearing loss, and to determine how various brands of amplified earmuffs compare in terms of speech intelligibility and electroacoustic response. Method: The Hearing in Noise Test (HINT) was used to measure the intelligibility of speech for 10 participants with hearing loss when they listened in a background of recorded industrial noise at 85 dBA. Participants listened with 3 different sets of amplified earmuffs (Peltor Tactical 7-S, Elvex COM 55, and Bilsom 707 Impact II), with a set of passive earmuffs (E-A-R Ultra 9000), and with ears unoccluded. Two measurements of sentence threshold were obtained under each of the 5 listening conditions. Gain was measured electroacoustically across a range of input levels and frequencies for each amplified earmuff. Results: Electroacoustic measurements indicated that each electronic earmuff amplified at low input levels and attenuated at high input levels. However, gain characteristics varied greatly across devices. HINT sentence thresholds were not significantly different across the 5 listening conditions or across the 2 trials. Conclusion: Results suggest that each type of earmuff can be used to reduce the noise exposure of people with hearing loss without compromising their ability to understand speech.

Communication in Noise with Acoustic and Electronic Hearing Protection Devices

2003 ◽  
Vol 14 (05) ◽  
pp. 260-268
Author(s):  
Patrick N. Plyler ◽  
Micah L. Klumpp
Keyword(s):  
Input Signal ◽  
Hearing Protection ◽  
Test Results ◽  
Behavioral Testing ◽  
Experimental Conditions ◽  
Hearing In Noise ◽  
Signal Presentation ◽  
Communication Ability ◽  
Protection Devices ◽  
Noise Test

The purpose of the present study was to evaluate communication ability in noise at two signal presentation levels when using acoustic and electronic hearing protection devices (HPDs). Fourteen normal hearing subjects were fitted binaurally with custom acoustic HPDs (ER-15) and custom electronic HPDs (Starkey SA T9). Probe microphone measurements were obtained on 28 ears for three experimental conditions (open ear, acoustic HPD, electronic HPD) at four input signal levels (60, 70, 80, 90 dB SPL). Also, communication in noise was evaluated for three conditions (open ear, acoustic HPD, electronic HPD) at two input signal levels (75 and 90 dB SPL) using the Hearing In Noise Test. Results indicated significantly greater attenuation as well as significantly better communication in noise for the acoustic HPD. Results also indicated that the electronic HPD failed to attenuate any input signal utilized. Although results of behavioral testing indicated that communication ability in noise was not significantly impacted by varying the signal presentation level when utilizing either HPD, a more salient finding may be that utilization of the electronic HPD may place listeners at risk for temporary or permanent sensorineural hearing loss.

scholarly journals Benefits of active middle ear implants over hearing aids in patients with sloping high tone hearing loss: comparison with hearing aids

2017 ◽  
Vol 37 (3) ◽  
pp. 218-223
Author(s):  
J.M. Lee ◽  
J.H. Jeon ◽  
I.S. Moon ◽  
J.Y. Choi
Keyword(s):  
Hearing Loss ◽  
Middle Ear ◽  
Hearing Aids ◽  
Hearing Aid ◽  
High Tone ◽  
Sono Stati ◽  
Hearing In Noise ◽  
Middle Ear Implants ◽  
Noise Test ◽  
Hearing Aid Benefit

In questo studio retrospettivo, abbiamo confrontato i benefici oggettivi e soggettivi degli impianti attivi dell’orecchio medio (AMEI) rispetto alle tradizionali protesi acustiche (HA) nei pazienti con perdita dell’udito per le frequenze acute. Trentaquattro pazienti con ipoacusia neurosensoriale sono stati trattati con l’impianto di AMEI. Tra questi, sei avevano un audiogramma “in discesa” con perdita dell’udito per le frequenze acute, ed avevano usato per più di sei mesi HA. È stata quindi eseguita una valutazione oggettiva, tramite l’audiometria tonale e il test di riconoscimento delle parole, una versione coreana del “Hearing in Noise Test” (K-HINT), ed una valutazione soggettiva tramite il seguente questionario: Abbreviated Profile of Hearing Aid Benefit (APHAB). I pazienti sono stati sottoposti ai suddetti test in tre occasioni distinte: 1) prima della chirurgia, senza protesi; 2) prima della chirurgia, con HA; 3) tre mesi dopo l’impianto di AMEI. Il guadagno medio per le alte frequenze (≥ 2 kHz) si è rivelato migliore con AMEI che con HA. Sebbene il risultato non ha raggiunto un livello di significatività statistica, gli impianti attivi dell’orecchio medio hanno mostrato un punteggio di riconoscimento delle parole superiore rispetto a HA. Ad ogni modo, il livello di comoda udibilità al quale il punteggio di riconoscimento delle parole è stato testato si è rivelato significativamente più basso con AMEI rispetto ad HA. Al K-HINT i pazienti con AMEI hanno mostrato un migliore riconoscimento rispetto ai risultati ottenuti con HA, sia in condizione di quiete sia di rumore. Gli score APAHB hanno rivelato che i pazienti erano più soddisfatti con AMEI. L’uso degli impianti attivi dell’orecchio medio in pazienti con perdita dell’udito per le frequenze acute ha permesso di ottenere risultati migliori rispetto all’utilizzo delle protesi tradizionali. Basandoci su questi dati, gli AMEI hanno offerto risultati oggettivi e soggettivi migliori, e pertanto, potrebbero rappresentare una valida alternativa per il trattamento delle ipoacusie con audiogramma in discesa.

scholarly journals Application of Arabic hearing in noise test on subjects with sensorineural hearing loss

2019 ◽  
Vol 5 (6) ◽  
pp. 1635
Author(s):  
Wessam Mostafa Essawy
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Sensorineural Hearing ◽  
Perception Threshold ◽  
Practical Applications ◽  
Speech In Noise ◽  
Hearing In Noise ◽  
The Mean ◽  
Noise Test ◽  
Test Suit

<p class="abstract"><strong>Background:</strong> HINT sentence test is one of adaptive speech in noise tests. It has been used in many clinical applications such as recording of speech perception threshold using sentences material in quiet and in noise and verifying the benefit from hearing-aid amplification and cochlear implants, especially in noise. This study was designed to apply HINT to subjects with SNHL to get a normative data for this group.</p><p class="abstract"><strong>Methods:</strong> This study included 50 subjects with bilateral mild to moderate sensorineural hearing loss.  </p><p class="abstract"><strong>Results:</strong> In SNHL subjects, the mean of sSRT in quiet was 49.46 dB (A)±0.68 dB. The mean of S/N ratio at threshold was 7.69 S/N ratio ±0.68, -8.18±0.33 and -8.18±0.35 in the noise conditions 0°, 90° and 270° respectively.</p><p><strong>Conclusions:</strong> The statistical reliability and efficiency of the test suit it to practical applications especially in SNHL subjects. </p>

scholarly journals Hearing in Noise Test in Subjects With Conductive Hearing Loss

2009 ◽  
Vol 108 (12) ◽  
pp. 937-942 ◽  
Author(s):  
Duen-Lii Hsieh ◽  
Kai-Nan Lin ◽  
Jung-Hung Ho ◽  
Tien-Chen Liu
Keyword(s):  
Hearing Loss ◽  
Conductive Hearing Loss ◽  
Hearing In Noise ◽  
Noise Test ◽  
Conductive Hearing

Adaptation of the Connected Speech Test: Rerecording and Passage Equivalency

2020 ◽  
Vol 29 (2) ◽  
pp. 259-264 ◽  
Author(s):  
Hasan K. Saleh ◽  
Paula Folkeard ◽  
Ewan Macpherson ◽  
Susan Scollie
Keyword(s):  
Speech Perception ◽  
North American ◽  
First Language ◽  
Intraclass Correlation ◽  
Normal Hearing ◽  
Connected Speech ◽  
Internal Reliability ◽  
Speech Test ◽  
The Mean ◽  
Unit Standard

Purpose The original Connected Speech Test (CST; Cox et al., 1987) is a well-regarded and often utilized speech perception test. The aim of this study was to develop a new version of the CST using a neutral North American accent and to assess the use of this updated CST on participants with normal hearing. Method A female English speaker was recruited to read the original CST passages, which were recorded as the new CST stimuli. A study was designed to assess the newly recorded CST passages' equivalence and conduct normalization. The study included 19 Western University students (11 females and eight males) with normal hearing and with English as a first language. Results Raw scores for the 48 tested passages were converted to rationalized arcsine units, and average passage scores more than 1 rationalized arcsine unit standard deviation from the mean were excluded. The internal reliability of the 32 remaining passages was assessed, and the two-way random effects intraclass correlation was .944. Conclusion The aim of our study was to create new CST stimuli with a more general North American accent in order to minimize accent effects on the speech perception scores. The study resulted in 32 passages of equivalent difficulty for listeners with normal hearing.

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