Short and Long Compression Release Times: Speech Understanding, Real-World Preferences, and Association with Cognitive Ability

Cox, Robyn M.; Xu, Jingjing

doi:10.3766/jaaa.21.2.6

Cited by 42 publications

(63 citation statements)

References 38 publications

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“…Lunner (2003) also suggested that it is important to note that the hearing aid processing may in itself be cognitively demanding. This is in agreement with the results reported by Gatehouse et al (2006) and Cox and Xu (2010) who showed that listeners with greater cognitive skills were more likely to benefit from fast acting compression than those with poorer cognitive performance. The implication from the mismatch theory is that the more the hearing aid processing causes the signal to differ from the representation stored in the long term memory, the greater the predictive role of cognition will be.…”

supporting

confidence: 93%

Predictors of aided speech recognition, with and without frequency compression, in older adults

Ellis

Munro

2015

International Journal of Audiology

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Objective:The aim was to investigate whether cognitive and/or audiological measures predict aided speech recognition, both with and without frequency compression (FC).Design: Participants wore hearing aids, with and without FCfor a total of 12 weeks (six weeks in each signal processing condition, ABA design). Performance on a sentence-in-noise recognition test was assessed at the end of each six week period. Audiological (severity of high frequency hearing loss, presence of dead regions) and cognitive measures (reading span and trail making test scores) were obtained and assessed as predictors of sentence-in-noise recognition with and without FC enabled.Study sample: Twelve experienced hearing aid users (aged 65-84 years old) with moderate-to-severe high-frequency hearing loss took part in the study. Results:The results suggest that both auditory and cognitive factors can be predictive of sentence-innoise recognition with conventional amplification. However, only auditory factors were significantly correlated with the degree of benefit obtained from FC.

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supporting

confidence: 93%

Predictors of aided speech recognition, with and without frequency compression, in older adults

Ellis

Munro

2015

International Journal of Audiology

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“…In the domain of hearing aids, it has been shown that WMC correlates with aided speech recognition in noise performance (Foo, Rudner, Rönnberg & Lunner, 2007;Gatehouse, Naylor & Elberling, 2003, 2006a, 2006bLunner, 2003, Lunner andSundewall-Thorén, 2007). The ability to derive benefit from digital signal processing algorithms in hearing aids is also associated with WMC (Arehart et al, 2013;Cox & Xu, 2010;Lunner, 2003;Lunner and Sundewall-Thorén, 2007;Rudner, Foo, SundewallThorén, Lunner & Rönnberg, 2008;Rudner, Foo, Lunner & Rönnberg, 2009;.…”

Section: Working Memorymentioning

confidence: 99%

Exploring Cognitive Spare Capacity : Executive Processing of Degraded Speech

Mishra¹

2014

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Cognitive resources, specifically working memory capacity are used for listening to speech, especially in noise. Cognitive resources are limited, and if listeners allocate a greater share of these resources to recovering the input signal in noise, fewer resources are available for interpreting and encoding its linguistic content. Although the importance of CSC for individual success in communicative situations has been acknowledged, this concept has not hitherto been explored experimentally. In this thesis, a CSC test (CSCT) was developed and administered to young adults with normal hearing and older adults with age-related hearing loss. CSCT required executive processing of speech at different memory loads with and without visual cues in different noise conditions. A free recall task using the same material was administered for comparison purposes and a battery of cognitive tests was administered to understand the relation between CSC and established cognitive concepts. The aims of the thesis were to investigate how CSC is influenced by 1) different executive demands and memory loads; 2) background noise; 3) visual cues; 4) aging and concomitant hearing loss. The results showed that 1) CSC was sensitive to memory load, and updating demands reduced CSC more than inhibition demands; 2) CSC was reduced in background noise compared to quiet; 3) visual cues enhanced CSC especially in noise; 4) CSC was reduced with ageing and concomitant hearing loss especially when visual cues were absent, memory demands were increased and background noise was speech-like. The main finding of this thesis was that visual cues enhanced CSC for older individuals with hearing loss, specifically in adverse listening conditions. This demonstrates the importance of audiovisual testing in audiological assessment. Further, specific cognitive resources depleted during listening in noise were at least partially compensated by other cognitive functions. This thesis is the first step towards a theoretical understanding of CSC and in future, tests of CSC may play a crucial role in planning rehabilitation of persons with hearing loss.

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“…Most studies (Cox & Xu, 2010; Foo et al, 2007; Gatehouse, Naylor, & Elberling, 2003; Gatehouse et al, 2006; Lunner & Sundewall-Thoren, 2007; Rudner, Foo, Ronnberg, & Lunner, 2009) used a two-channel wide-dynamic range compressor, as was the standard approach in wearable aids at that time. Results may be different with higher numbers of compression channels, which can produce a variety of complex envelope modifications (Souza, Hoover, Gallun, & Brennan, 2010).…”

mentioning

confidence: 99%

Relating Working Memory to Compression Parameters in Clinically Fit Hearing Aids

Souza

Sirow

2014

Am J Audiol

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Purpose Several laboratory studies have demonstrated that working memory may influence response to compression speed in controlled (i.e., laboratory) comparisons of compression. In this study, we explored whether the same relationship would occur under less controlled conditions, as might occur in a typical audiology clinic. Method Participants included 27 older adults who sought hearing care in a private practice audiology clinic. Working memory was measured for each participant using a reading span test. We examined the relationship between working memory and aided speech recognition in noise, using clinically-fit hearing aids with a range of compression speeds. Results Working memory, amount of hearing loss, and age each contributed to speech recognition but the contribution depended on the speed of the compression processor. For fast-acting compression, the best performance was obtained by patients with high working memory. For slow-acting compression, speech recognition was affected by age and amount of hearing loss but was not affected by working memory. Conclusions Despite the expectation of greater variability from differences in compression implementation, number of compression channels or attendant signal processing, the relationship between working memory and compression speed showed a similar pattern as results from more controlled, laboratory-based studies.

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Short and Long Compression Release Times: Speech Understanding, Real-World Preferences, and Association with Cognitive Ability

Cited by 42 publications

References 38 publications

Predictors of aided speech recognition, with and without frequency compression, in older adults

Predictors of aided speech recognition, with and without frequency compression, in older adults

Exploring Cognitive Spare Capacity : Executive Processing of Degraded Speech

Relating Working Memory to Compression Parameters in Clinically Fit Hearing Aids

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