Study on Consonant Confusion in Japanese Patients With Sensorineural Hearing Loss

Kodera, Kazuoki; Akai, Sadayasu; Hirota, Eiko; Miura, Masayoshi; Yabe, Susumu

doi:10.3950/jibiinkoka.96.1404

Cited by 6 publications

(5 citation statements)

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“…A set of 18 letters was used for the assessment. Ma, Na, Me, Ne, Mo, No, Ya, Ra, Yu, Ru, Yo, Ro, Ki, Chi, Ku, Tsu, Ke, and Te were selected from a possible list of over fifty Japanese hiragana characters, given that each pair that can be formed from these 18 letters are easy to confuse for Japanese patients with sensorineural hearing loss (Kodera, Akai, Hirota, Miura, & Yabe, 1993). In addition to these standard stimuli, two sets of distorted auditory stimuli were prepared.…”

Section: Procedures and Stimulimentioning

confidence: 99%

A Proposed Speech Discrimination Assessment Methodology Based on Event-Related Potentials to Visual Stimuli

Morikawa

Kozuka

Adachi

2012

International Journal of E-Health and Medical Communications

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Objective and quantitative assessment methods are needed for the fitting of hearing aid parameters. This paper proposes a novel speech discrimination assessment method using electroencephalograms (EEGs). The method utilizes event-related potentials (ERPs) to visual stimuli instead of the conventionally used auditory stimuli. A spoken letter is played through a speaker as an initial auditory stimulus. The same letter can then be visually displayed on a screen as a match condition, or a different letter is displayed (mismatch condition). The participant determines whether the two stimuli represent the same letter or not. The P3 component or late positive potential (LPP) component are elicited when a participant detects either a match or mismatch between the auditory and visual stimuli, respectively. The hearing ability of each participant can be estimated objectively via analysis of these ERP components.

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Section: Procedures and Stimulimentioning

confidence: 99%

A Proposed Speech Discrimination Assessment Methodology Based on Event-Related Potentials to Visual Stimuli

Morikawa

Kozuka

Adachi

2012

International Journal of E-Health and Medical Communications

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“…In addition to percent articulation, the problem of consonant confusion is another factor in sensorineural hearing loss. In Japanese, the monosyllables in the /s/ row are heard incorrectly as belonging to the /h/ row, and those in the /h/ and /t/ rows are heard incorrectly as belonging to the /k/ row [2]. As shown in Figure 4, it is interesting that the monosyllables with longer W e values are heard instead of those with shorter W e values among the voiceless consonants.…”

Section: Discussionmentioning

confidence: 94%

“…Previous studies have investigated the speech intelligibility of patients with sensorineural hearing loss, and identified the indiscernible consonants in Japanese monosyllables [1][2][3]. These studies reported that the monosyllables in the /k/ and /y/ rows of the Japanese syllabary were discerned the easiest, while those in the /n/ and /d/ rows were discerned with the most difficulty.…”

Section: Introductionmentioning

confidence: 99%

Relationship between Intelligibility and autocorrelation factors of Japanese monosyllables

Shimokura

Akasaka

Hosoi

et al. 2013

The Journal of the Acoustical Society of America

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The amplification of speech sounds by hearing aids only partially improve speech intelligibility for sensorineural hearing loss. Previous research has identified the indiscernible consonants in Japanese monosyllables, but it remains unclear which acoustical features in those consonants cause hearing difficulty. Therefore, the aim of this study is to clarify the influential factors in speech intelligibility using the autocorrelation function (ACF), which can capture the temporal features of signals. We compared the ACF factors with the percent articulations obtained by a Japanese speech intelligibility test (n = 144). The time-series factors were calculated by running ACF along a monosyllable which then represented the median values of the ACF factors. Results showed the effective duration (τe [ms]) of the ACF was correlated with the averaged percent articulations among the consonants (r = 0.87, p < 0.01). Variable τe indicates the temporal fluctuation of speech signals including its fundamental frequency. Deteriorated perceptual function for temporal fluctuation may reduce recognition ability of the consonants, and thus the application of ACF analysis for hearing aids may help improve the hearing of patients with sensorineural hearing loss.

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“…At Japanese medical institutions, speech perception in patients with clinically moderate sensorineural hearing loss is evaluated according to the percentage of correctly perceived monosyllables out of a total of 50 Japanese monosyllables, as shown in Table 1. Previous studies investigated speech intelligibility in patients with sensorineural hearing loss and identified the less discernible consonants among the Japanese monosyllables [5,6]. However, to the best of our knowledge, only a few studies explained the differences in discernibility in terms of the physical characteristics of monosyllables.…”

Section: Introductionmentioning

confidence: 94%

Relationship between Effective Duration and Intelligibility of Japanese Monosyllables in Individuals with Sensorineural Hearing Loss

et al. 2023

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Among the temporal elements in the autocorrelation function, the effective duration (τe) is a useful indicator of speech recognition for patients with sensorineural hearing impairment. We assessed the influence of speech recognition performance on the relationship between the percentage of accurately perceived articulation and the median τe (τe-med) and the relationship between monosyllabic confusion and the τe-med. Significant correlations were observed between the articulation percentage and the average τe-med in groups with high, middle, and low speech recognition scores (SRSs). Two-factor mixed analysis of variance revealed significant main effects for the condition (presentation/response). There was no significant main effect for group (high-, middle-, or low-SRS) scores and no significant interaction between the groups. The average τe-med of the response was significantly longer than that of the presentation in all three groups. Monosyllables with short τe-med values tended to be misheard as monosyllables with a long τe-med when confusion occurred. The τe-med was useful for estimating monosyllables that patients with sensorineural hearing impairment find easy to listen to, independent of speech recognition performance.

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Study on Consonant Confusion in Japanese Patients With Sensorineural Hearing Loss

Cited by 6 publications

References 0 publications

A Proposed Speech Discrimination Assessment Methodology Based on Event-Related Potentials to Visual Stimuli

A Proposed Speech Discrimination Assessment Methodology Based on Event-Related Potentials to Visual Stimuli

Relationship between Intelligibility and autocorrelation factors of Japanese monosyllables

Relationship between Effective Duration and Intelligibility of Japanese Monosyllables in Individuals with Sensorineural Hearing Loss

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