Temporal processing and speech perception through multi-channel and channel-free hearing aids in hearing impaired

Mohan, Kishan Madikeri; Rajashekhar, Bellur

doi:10.1080/14992027.2019.1660005

Cited by 3 publications

(10 citation statements)

References 31 publications

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“…In a study in which acoustic analyzes of hearing aid signal outputs were performed, channel-free hearing aids also showed spectral distortion, similar to multichannel hearing aids. These results support our study findings 7 . Plomp has suggested that multichannel hearing aids assign different compression ratios to different channels depending on hearing loss at each frequency, which reduces spectral contrast and changes the spectral shape of speech, resulting in lower speech recognition scores 12 .…”

Section: Discussionsupporting

confidence: 94%

“…Moreover, in the acoustic analysis of the hearing aid signal outputs, channelfree hearing aids also showed temporal distortion, similar to multichannel hearing aids. 7 In our results, 1,000 Hz (p ¼ 0.045), 2,000 Hz (p ¼ 0.046), and composite RGDT (p ¼ 0.001) thresholds were found to be statistically significantly lower with channel-free hearing aids. This has shown that temporal resolution performance is better than multichannel hearing aids.…”

Section: Discussionsupporting

confidence: 43%

“…For the CMR-CM task, the channel-free hearing aid performed statistically significantly better than the multichannel hearing aid. Moreover, in the acoustic analysis of the hearing aid signal outputs, channel-free hearing aids also showed temporal distortion, similar to multichannel hearing aids 7 . In our results, 1000 Hz (p=.045), 2000 Hz (p=.046) and composite RGDT (p=.001) thresholds were found to be statistically significantly lower with channel-free hearing aids.…”

Section: Accepted Manuscriptmentioning

confidence: 86%

“…No statistically significant difference was observed in the study 16 . Mohan and Rajashekhar found that the performance between multichannel and channel-free hearing aids did not show a statistically significant difference for speech perception in noise test 7 . According to the results we obtained; no statistically significant difference was observed between multichannel and channel-free hearing aids for SRT in noise and SI in noise within the scope of TMT (p>0.05) (Table 2).…”

Section: Accepted Manuscriptmentioning

confidence: 95%

“…It performs parallel processing by measuring the sound pressure level of the input signal and assigns a gain to the fed signal into the filter control at any moment as dictated by the measured sound pressure level. Finally, it amplifies the soft input signal and maintains the comfort sound for high-level sound without changing the temporal speech envelope 6,7 . While both signal processing strategies are currently available in hearing aids, it is unclear whether differences in these signal processing strategies affect user performance and preference.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

See 4 more Smart Citations

The Effect of Multichannel and Channel-Free Hearing Aids on Spectral-Temporal Resolution and Speech Understanding in Noise

KILIÇ

Kara

2022

J Am Acad Audiol

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Background: Identifying and understanding speech is difficult for individuals with sensorineural hearing loss, especially in noisy environments. Possible causes include less audibility of the signal, impaired temporal resolution and low selectivity of frequency. The hearing aid is the most common option used to minimize the problems faced by individuals with sensorineural hearing loss. Purpose: To investigate the effects of multichannel and channel-free hearing aid signal processing techniques on spectral-temporal resolution and speech understanding in noise. Research Design: A experimental study was used in which the determined tests were applied to the participants. Study Sample: Thirty-four individuals with bilateral symmetrical sensorineural hearing loss between the ages of 18-70 were included in our study. Data Collection and Analysis: Spectral-temporally modulated ripple test, random gap detection test (RDGT) and Turkish matrix test were applied to the participants using multichannel and channel-free hearing aids. All the data obtained were compared statistically in terms of the performances of the hearing aids. Results: There was no significant difference between multichannel and channel-free hearing aids for spectral resolution and speech understanding in noise tests (p>0.05). While there was no significant difference between the two hearing aids for 500 Hz and 4000 Hz RGDT in temporal resolution measurement (p>0.05); for 1000 Hz (p=.045), 2000 Hz (p=.046) and composite RGDT (p=.001), statistically significant better performances were obtained with the channel-free hearing aids. Conclusions: It is thought that faster processing of the incoming signal in the channel-free hearing aids improves the temporal resolution performance. It is predicted that our study findings might help to determine the signal processing technique that will maximize the communication skills of the patients in various conditions.

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Section: Discussionsupporting

confidence: 94%

Section: Discussionsupporting

confidence: 43%

Section: Accepted Manuscriptmentioning

confidence: 86%

Section: Accepted Manuscriptmentioning

confidence: 95%

Section: Accepted Manuscriptmentioning

confidence: 99%

See 3 more Smart Citations

The Effect of Multichannel and Channel-Free Hearing Aids on Spectral-Temporal Resolution and Speech Understanding in Noise

KILIÇ

Kara

2022

J Am Acad Audiol

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Investigation of hearing aid users' speech understanding in noise and their spectral-temporal resolution skills

KILIÇ

Kara

2023

Journal of Otology

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时间信息加工与信息加工时间特性双视角下的重要时间参数及其证据

Yin¹,

Cui²,

Bai³

et al. 2020

Adv Psychol Sci

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Time is not only the object of human information processing, but also the factors that affect the processing of non-temporal information. The duration between tens of milliseconds and seconds is closely related to human life, for example, subjective timing, performance and speech activities. In this time range, 20~60 ms, 1/3~1 s and 2~3 s are the important time parameters concerned by researchers. It can be seen from the previous literature that whether these parameters really exist is still one of the major disagreements in the academic circle. Firstly, this paper introduces the important time parameters from the two perspectives of temporal information processing and temporal processing of information, Then, the evidence of 1/3~1 s and 2~3 s boundaries from the perspective of "temporal information processing" is reviewed in the fields of behavior, brain injury, pharmacology, EEG, brain imaging, trans cranial magnetic stimulation and trans cranial direct current stimulation, Then, from the perspectives of Montessori synchronization, subjective rhythmic, speech act, reversals of perception, inhibition of return and mismatch negativity, the paper reviews the evidence of 20~60 ms and 2~3 s time windows from the perspective of "temporal processing of information". On the one hand, future research should build a theoretical hypothesis based on the stronger explanatory power of the demarcation region and time window, on the other hand, it should clarify the relationship and difference between the demarcation region and time window.

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Temporal processing and speech perception through multi-channel and channel-free hearing aids in hearing impaired

Cited by 3 publications

References 31 publications

The Effect of Multichannel and Channel-Free Hearing Aids on Spectral-Temporal Resolution and Speech Understanding in Noise

The Effect of Multichannel and Channel-Free Hearing Aids on Spectral-Temporal Resolution and Speech Understanding in Noise

Investigation of hearing aid users' speech understanding in noise and their spectral-temporal resolution skills

时间信息加工与信息加工时间特性双视角下的重要时间参数及其证据

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