Binaural Hearing with Temporally Complex Signals

Stecker, G. Christopher; Bernstein, Leslie; Brown, Andrew D.

doi:10.1007/978-3-030-57100-9_6

Cited by 10 publications

(8 citation statements)

References 97 publications

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“…While many appropriate methods for the assessment of binaural hearing exist for adults (e.g. Stecker & Gallun, 2012), they are largely unavailable for a young, pre-verbal, population. The aim here was to study whether auditory elicited saccadic gaze latencies could be measured between 0.5 years and 5 years of age and to relate latency to age.…”

Section: Introductionmentioning

confidence: 99%

The Development of Sound Localization Latency in Infants and Young Children with Normal Hearing

2022

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With the advances in eye tracking, saccadic reflexes towards auditory stimuli have become an easily accessible behavioral response. The present study investigated the development of horizontal sound localization latency quantified by saccadic reflexes in infants and young children with normal hearing (0.55 to 5.6 years, n = 22). The subject was seated in front of an array of 12 loudspeaker/display-pairs arranged equidistantly in an arc from −55 to + 55° azimuth. An ongoing auditory-visual stimulus was presented at 63 dB SPL and shifted to another randomly selected pair at 24 occasions. At each shift, the visual part of the stimulus was blanked for 1.6 s providing auditory-only localization cues. A sigmoid model was fitted to the gaze samples following the azimuthal sound shifts. The overall sound localization latency (SLL) for a subject was defined as the mean of the latencies for all trials included by objective criteria. The SLL was assessed in 21 of 22 children with a mean of 6.1 valid trials. The SLL ranged 400 to 1400 ms (mean = 860 ms). An inverse model demonstrated a significant relationship between SLL and age ( R2 = 0.79, p < 0.001), reflecting a distinct reduction of latency with increasing age. No partial correlation between SLL and sound localization accuracy was found when controlling for age ( p = 0.5), suggesting that localization latency may provide diagnostic value beyond accuracy.

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Section: Introductionmentioning

confidence: 99%

The Development of Sound Localization Latency in Infants and Young Children with Normal Hearing

2022

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“…The binaural consequences of these strategies have not previously been investigated, despite good reasons to believe that modifications of the envelope might influence the salience of binaural cues. In particular, it has long been recognized that abrupt rises in the amplitude envelope (or “onsets”) have special significance for the coding of binaural information, and this phenomenon has received renewed attention in recent years as researchers have tried to characterize binaural “onset dominance” for temporally complex sounds [for review, see Stecker et al (2021) ]. Of particular relevance here, interaural time differences (ITDs) occurring at onsets in the envelope tend to dominate the overall spatial percept of modulated sounds, and the steepness of these rising portions of the envelope is known to affect the salience of ITDs ( Klein-Hennig et al , 2011 ; Laback et al , 2011 ; Dietz et al , 2013 ; Stecker, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Binaural consequences of speech envelope enhancement

Baltzell

Cardosi

Swaminathan

et al. 2022

JASA Express Letters

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The potential binaural consequences of two envelope-based speech enhancement strategies (broadband compression and expansion) were examined. Sensitivity to interaural time differences imposed on four single-word stimuli was measured in listeners with normal hearing and sensorineural hearing loss. While there were no consistent effects of compression or expansion across all words, some potentially interesting word-specific effects were observed.

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“…By presenting the speech and masker signals with different binaural cues or from different spatial directions, the ability to exploit interaural difference cues for segregating competing signals can be assessed. When intact, this ability can clearly improve speech understanding in noise (e.g., Stecker & Gallun, 2012). When immature or impaired, speech understanding deficits can be expected to occur that require effective diagnosis and treatment strategies (e.g., Gallun, 2021;Litovsky, 2012).…”

Section: Introductionmentioning

confidence: 99%

Masked Speech Recognition by Normal-Hearing 6–13-Year-Olds in Conditions With and Without Interaural Difference Cues

2022

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Using the Danish ‘børneDAT’ corpus, the current study aimed to (1) collect normative masked speech recognition data for 6–13-year-olds in conditions with and without interaural difference cues, (2) evaluate the test–retest reliability of these measurements, and (3) compare two widely used measures of binaural/spatial benefit in terms of the obtained scores. Seventy-four children and 17 young adults with normal hearing participated. Using headphone presentation, speech recognition thresholds (SRTs) were measured twice at two separate visits in four conditions. In the first two conditions, børneDAT sentences were presented in diotic stationary speech-shaped noise, with the sentences either interaurally in-phase (‘N0S0’) or interaurally out-of-phase (‘N0S180’). In the other two conditions, børneDAT sentences were simulated to come from 0° azimuth and two running speech maskers from either 0° azimuth (‘co-located’) or ±90° azimuth (‘spatially separated’). In relative terms, the children achieved lower SRTs in stationary noise than in competing speech, whereas the adults showed the opposite pattern. 12–13-year-old children achieved adult-like performance in all but the co-located condition. Younger children showed generally immature speech recognition abilities. Test–retest reliability was highest for the SRTs in stationary noise and lowest for the spatial benefit scores. Mean benefit was comparable for the two measures and participant groups, and the two sets of scores were not correlated with each other. Developmental effects were most pronounced in the conditions with interaural difference cues. In conclusion, reference data for the børneDAT corpus obtained under different acoustic conditions are available that can guide future research and potential clinical applications.

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Binaural Hearing with Temporally Complex Signals

Cited by 10 publications

References 97 publications

The Development of Sound Localization Latency in Infants and Young Children with Normal Hearing

The Development of Sound Localization Latency in Infants and Young Children with Normal Hearing

Binaural consequences of speech envelope enhancement

Masked Speech Recognition by Normal-Hearing 6–13-Year-Olds in Conditions With and Without Interaural Difference Cues

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