Signal-To-Noise Threshold with and without Hearing Aid

Welzl-Müller, K; Sattler, K.

doi:10.3109/14992028409042137

Cited by 2 publications

(2 citation statements)

References 8 publications

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“…Mean speech-perception scores were significantly better at both sites in the condition with the hearing aids in the omnidirectional microphone mode than in the unaided listening condition. Few studies have reported these two conditions with current hearing aid technologies (Nabelek and Mason, 1981;Duquesnoy and Plomp, 1983;Welzl-Muller and Sattler, 1984). However, this finding is reasonable given the enhancement of the auditory signal, particularly that of the higher frequencies, provided via amplification.…”

Section: Discussionmentioning

confidence: 89%

Speech Perception in Noise: Directional Microphones versus Frequency Modulation (FM) Systems

Lewis¹,

Crandell²,

Valente³

et al. 2004

J Am Acad Audiol

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The major consequence of sensorineural hearing loss (SNHL) is communicative difficulty, especially with the addition of noise and/or reverberation. The purpose of this investigation was to compare two types of technologies that have been shown to improve the speech-perception performance of individuals with SNHL: directional microphones and frequency modulation (FM) systems. Forty-six adult subjects with slight to severe SNHL served as subjects. Speech perception was assessed using the Hearing in Noise Test (HINT) with correlated diffuse noise under five different listening conditions. Results revealed that speech perception was significantly better with the use of the FM system over that of any of the hearing aid conditions, even with the use of the directional microphone. Additionally, speech perception was significantly better with the use of two hearing aids used in conjunction with two FM receivers rather than with just one FM receiver. Directional microphone performance was significantly better than omnidirectional microphone performance. All aided listening conditions were significantly better than the unaided listening condition.

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Section: Discussionmentioning

confidence: 89%

Speech Perception in Noise: Directional Microphones versus Frequency Modulation (FM) Systems

Lewis¹,

Crandell²,

Valente³

et al. 2004

J Am Acad Audiol

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“…The mean S/N relations obtained for all of the subjects in this study were +3.20 DB SPL (A) ranging from -1.16 dB SPL (A) to +6.47 dB SPL (A). Certain authors (3,8,(14)(15)(19)(20)(21)(22)(27)(28)(29) evaluated normal hearing adults, in free field with noise in fixed intensity, and obtained the relations Signal / Noise (S/N) of -6.4 dB A, -10.33 dB A, A -8.14 dB, -2.92 dB A, A -2.6 dB, -12 dB A, the -6 dB, -6.71 dBA, The -11.5 dB, -8.72 dB and -7.57 dB A, respectively. From these, some (3,(19)(20)22,29) also evaluated, individuals with sensorineural hearing loss in the same conditions and obtained Relations Signal / Noise (S/N) of -3,7 dB A, +1,34 dB A, +2,1 dB A -1,15 dB A -2,1 dB A.…”

Section: Relations Signal / Noise (S/n) Obtained Through the Sentencmentioning

confidence: 99%

Recognition of sentences in silence, and at noise, in free Field, in carriers from hearing loss from moderate degree

Lessa

Padilha

Santos

et al. 2014

AIO

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SUMMARYIntroduction: In daily routine from the audiologists, the complaints are frequent about the difficulty of understanding of speech in a noisy environment. Audiologic tests that use the sentences as stimulus, have been objects of research, because besides check the real hearing abilities from the patient, provide a direct approach with situations of communications and provide information that will guide the more adequate conduct to be indicated for the individual with hearing complaints. Objective: Determine the thresholds of recognition of sentences in silence and the relation sign/noise in a group of individual carriers of the bilateral neurosensory hearing loss and symmetric from moderate degree. Method: Retrospective study, clinic and experimental. Were evaluated 50 individuals, being 16 adults of middle age and 34 elderly. Was performed a anamnesis and the basic audiological evaluation. Posteriorly, using the test of List of Sentences in Portuguese, was performed the research of the thresholds of recognition of sentences in silence and the relation sign/noise with a fixed level of noise of 65 dB NPS(A). Results: The average LRSS obtained for all subject was of 60,90 dB NPS (A), and the average of relations S/R was of +3,20 dB NPS (A). Conclusion: The analysis of variables allowed to obtain the average LRSS, affirm that it had correlation with the triton mean of the better ear from subjects and that the threshold of audibility seems to be the only parameter to influence the recognition in the silence. Besides, make it possible to obtain of the mean of relations S/R, which demonstrate the difficulty that the individual with hearing loss present in noisy environment.

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Signal-To-Noise Threshold with and without Hearing Aid

Cited by 2 publications

References 8 publications

Speech Perception in Noise: Directional Microphones versus Frequency Modulation (FM) Systems

Speech Perception in Noise: Directional Microphones versus Frequency Modulation (FM) Systems

Recognition of sentences in silence, and at noise, in free Field, in carriers from hearing loss from moderate degree

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