Better-ear rating based on glimpsing

Schoenmaker, Esther; Sutojo, Sarinah; Par, Steven van de

doi:10.1121/1.5002684

Cited by 8 publications

(5 citation statements)

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“…Another advantage of binaural hearing is improved hearing in noisy situations. Individuals with binaural hearing can benefit from head shadow effects just by attending to the ear with the better SNR [ 37 ]. Furthermore, the auditory system can combine different mixtures of speech and noise arriving at each ear to effectively remove some of the noise [ 38 ].…”

Section: Discussionmentioning

confidence: 99%

Benefits of Cartilage Conduction Hearing Aids for Speech Perception in Unilateral Aural Atresia

et al. 2021

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Severe conductive hearing loss due to unilateral aural atresia leads to auditory and developmental disorders, such as difficulty in hearing in challenging situations. Bone conduction devices compensate for the disability but unfortunately have several disadvantages. The aim of this study was to evaluate the benefits of cartilage conduction (CC) hearing aids for speech perception in unilateral aural atresia. Eleven patients with unilateral aural atresia were included. Each participant used a CC hearing aid in the atretic ear. Speech recognition scores in the binaural hearing condition were obtained at low speech levels to evaluate the contribution of aided atretic ears to speech perception. Speech recognition scores were also obtained with and without presentation of noise. These assessments were compared between the unaided and aided atretic ear conditions. Speech recognition scores at low speech levels were significantly improved under the aided atretic ear condition (p < 0.05). A CC hearing aid in the unilateral atretic ear did not significantly improve the speech recognition score in a symmetrical noise presentation condition. The binaural hearing benefits of CC hearing aids in unilateral aural atresia were predominantly considered a diotic summation. Other benefits of binaural hearing remain to be investigated.

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Section: Discussionmentioning

confidence: 99%

Benefits of Cartilage Conduction Hearing Aids for Speech Perception in Unilateral Aural Atresia

et al. 2021

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“…The ear channel, for which the distribution of local

{SNR}_{i, j} s

exhibited the higher median (computed across time and frequency), was defined as the better ear throughout the trial. From the distribution of local

{SNR}_{i, j} s

at the better ear, we calculated a value, which was introduced as useful speech percentage (USP) in Schoenmaker, Sutojo, and van de Par (), and which is supposed to reflect the number of glimpses reaching the better ear. To obtain the USP value, a criterion was set, which defines local

{SNR}_{i, j} s

exceeding the criterion as useful to the listener.…”

Section: Methodsmentioning

confidence: 99%

“…The USP metric described above was used to determine the number of glimpses that subjects had available near their respective SRTs. Although it does not aim for a precise quantification of the information available to the auditory system, as the amount of information within each glimpse is not defined, the number of available glimpses was found to nevertheless correlate well with speech intelligibility (Schoenmaker et al., ). In order to estimate the USP values for each participant and condition, the analysed speech material consisted of all trials that had been used throughout the measurement phase of the AFC procedure per participant and per condition.…”

Section: Methodsmentioning

confidence: 99%

Contribution of binaural masking release to improved speech intelligibility for different masker types

Sutojo

Par

Schoenmaker

2018

Eur J of Neuroscience

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In situations with competing talkers or in the presence of masking noise, speech intelligibility can be improved by spatially separating the target speaker from the interferers. This advantage is generally referred to as spatial release from masking, and different mechanisms have been suggested to explain it. One proposed mechanism to benefit from spatial cues is the binaural masking release, which is purely stimulus-driven. According to this mechanism, the spatial benefit results from differences in the binaural cues of target and masker, which need to appear simultaneously in time and frequency to improve the signal detection. In an alternative proposed mechanism, the differences in the interaural cues improve the segregation of auditory streams, a process, which involves top-down processing rather than being purely stimulus-driven. Other than the cues that produce binaural masking release, the interaural cue differences between target and interferer required to improve stream segregation do not have to appear simultaneously in time and frequency. This study is concerned with the contribution of binaural masking release to spatial release from masking for three masker types that differ with respect to the amount of energetic masking they exert. Speech intelligibility was measured, employing a stimulus manipulation that inhibits binaural masking release and analysed with a metric to account for the number of better-ear glimpses. Results indicate that the contribution of the stimulus-driven binaural masking release plays a minor role while binaural stream segregation and the availability of glimpses in the better ear had a stronger influence on improving the speech intelligibility.

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“…In addition, in environments with multiple sound sources, listeners with normal hearing seem able to attend to the information from the ear with the better SNR at each specific point in time. Such “better-ear glimpsing” occurs either by a binaural ( Brungart & Iyer 2012 ; Glyde et al 2013a ) or a monaural ( Edmonds & Culling 2006 ) process, and substantially contributes to performance in speech-on-speech tasks ( Schoenmaker et al 2017 ). The potential for SRM increases when interfering sounds are intelligible and qualitatively similar to the target.…”

Section: Introductionmentioning

confidence: 99%

Differing Bilateral Benefits for Spatial Release From Masking and Sound Localization Accuracy Using Bone Conduction Devices

et al. 2022

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Objectives: Normal binaural hearing facilitates spatial hearing and therefore many everyday listening tasks, such as understanding speech against a backdrop of competing sounds originating from various locations, and localization of sounds. For stimulation with bone conduction hearing devices (BCD), used to alleviate conductive hearing losses, limited transcranial attenuation results in cross-stimulation so that both cochleae are stimulated from the position of the bone conduction transducer. As such, interaural time and level differences, hallmarks of binaural hearing, are unpredictable at the level of the inner ears. The aim of this study was to compare spatial hearing by unilateral and bilateral BCD stimulation in normal-hearing listeners with simulated bilateral conductive hearing loss.Design: Bilateral conductive hearing loss was reversibly induced in 25 subjects (mean age = 28.5 years) with air conduction and bone conduction (BC) pure-tone averages across 0.5, 1, 2, and 4 kHz (PTA 4 ) <5 dB HL. The mean (SD) PTA 4 for the simulated conductive hearing loss was 48.2 dB (3.8 dB). Subjects participated in a speech-in-speech task and a horizontal sound localization task in a within-subject repeated measures design (unilateral and bilateral bone conduction stimulation) using Baha 5 clinical sound processors on a softband. For the speech-inspeech task, the main outcome measure was the threshold for 40% correct speech recognition when masking speech and target speech were both colocated (0°) and spatially and symmetrically separated (target 0°, maskers ±30° and ±150°). Spatial release from masking was quantified as the difference between colocated and separated masking and target speech thresholds. For the localization task, the main outcome measure was the overall variance in localization accuracy quantified as an error index (0.0 = perfect performance; 1.0 = random performance). Four stimuli providing various spatial cues were used in the sound localization task. Results:The bilateral BCD benefit for recognition thresholds of speech in competing speech was statistically significant but small regardless if the masking speech signals were colocated with, or spatially and symmetrically separated from, the target speech. Spatial release from masking was identical for unilateral and bilateral conditions, and significantly different from zero. A distinct bilateral BCD sound localization benefit existed but varied in magnitude across stimuli. The smallest benefit occurred for a low-frequency stimulus (octave-filtered noise, CF = 0.5 kHz), and the largest benefit occurred for unmodulated broadband and narrowband (octave-filtered noise, CF = 4.0 kHz) stimuli. Sound localization by unilateral BCD was poor across stimuli. Conclusions:Results suggest that the well-known transcranial transmission of BC sound affects bilateral BCD benefits for spatial processing of sound in differing ways. Results further suggest that patients with bilateral conductive hearing loss and BC thresholds within the normal range may benefit from a b...

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Better-ear rating based on glimpsing

Cited by 8 publications

References 40 publications

Benefits of Cartilage Conduction Hearing Aids for Speech Perception in Unilateral Aural Atresia

Benefits of Cartilage Conduction Hearing Aids for Speech Perception in Unilateral Aural Atresia

Contribution of binaural masking release to improved speech intelligibility for different masker types

Differing Bilateral Benefits for Spatial Release From Masking and Sound Localization Accuracy Using Bone Conduction Devices

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