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speech intelligibility index (SII)

speech intelligibility index (SII)

Conductive Hearing Loss and Speech Intelligibility

Chronic otitis media early in childhood is often voiced as a concern for speech-language delay, though the research is inconclusive.

Animals studies that induce chronic conductive pathologies can result in significant changes in central auditory pathways, including peripheral afferent and efferent neural innervation. However, in general, these animal studies create significant pathologies over extended periods of time without resolve and consistent sound stimulation.

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JAAA Editorial: Rise of the Machines: Audiology and Mobile Devices

Over the past few decades, advances in mobile device technology have enabled many of the core audiology tests to be delivered through smart phones or tablet computers.

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A Proposed Protocol: Assessment for Patients with Single-Sided Deafness or Asymmetric Hearing Loss

Do you fit bone-conduction hearing aids, contralateral routing of signals (CROS) hearing aids, and/or cochlear implants to your adult patients with single-sided deafness or asymmetric hearing loss (with the four-frequency pure-tone average in the poorer ear being greater than or equal to 70 dB HL)? Curious which one is the best treatment? If so, you may be interested in a consensus paper by Van de Heyning et al (2016). 

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Noise Reduction and Compression Combined?

Brons et al (2015) examined whether dynamic range compression and noise reduction work in tandem or in opposition to each other. They report that the literature on the interaction of these two strategies is scarce. The role of noise reduction is to “reduce hearing aid gain for background noises, while preserving gain for speech…” and the role of dynamic compression is to alter the hearing aid gain, based on the input level so as to fit sound levels into the dynamic range of the wearer.

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Invisible Hearing Loss and Speech Perception in Middle Age

The fact that temporal processing issues and temporal abnormalities can negatively impact speech perception in noise has been well described in the literature and is fairly well accepted. For example, Dubno and colleagues (2002) reported that people with reduced temporal resolution (due to aging or hearing loss) demonstrate poor speech recognition in temporally modulated noise, and deficient temporal processing may be a major factor associated with age-related speech in noise difficulties. 

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Is “Mediocrity” the New Standard Protocol?

Based on returned surveys from 1,141 experienced hearing aid users and 884 new users, Kochkin et al (2010) reported that "quality control at the point of dispensing has not kept pace with technological improvements…there is great variability in the hearing aid fitting process, and it appears that critical aspects of the fitting protocol are not followed, despite general consensus among all the professional societies…." 

The authors noted the top 10 key mistakes made by dispensing professionals included:

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Audiology Issues 2015: The View from 50,000 feet

Opinion Editorial by Douglas L. Beck AuD

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