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Book Cover
E-book
Author Venema, Theodore H

Title Compression for Clinicians : Third Edition
Edition 3rd ed
Published San Diego : Plural Publishing, Incorporated, 2017

Copies

Description 1 online resource (417 pages)
Contents Intro; Preface; 1 Common Clinical Encounters: Do We Really Know Them?; Introduction; The Outer Ear and Ear Canal: What Do These Offer for the Understanding of Speech?; The Occlusion Effect: What Exactly Is It?; The Middle Ear: Why Do We Have Middle Ears in the First Place?; The Middle Ear Adds Some 30 to 35 dB: Why Can a Conductive Hearing Loss Be More Than This?; Why Are Hearing Thresholds in dB Sound Pressure Level (SPL) Shaped as a Curve?; Why Does Carhart's Notch Appear With Otosclerosis?; Acoustic Reflexes: Why Do We Really Have Them Anyway?
Noise-Induced Hearing Loss: Why Does It Have Its Shape?Meniere's Disease: Why Does It Often Initially Present With a Rising Audiogram?; A Word About Presbycusis: Why Does It Mainly Affect the High Frequencies?; Speech Discrimination: Why Is It Different From Client to Client?; Postscript: T he Complementary Roles of AR Testing and OAE Testing; References; 2 The Cochlea and Outer Hair Cell Damage; Introduction; A Sketch of Cochlear Anatomy and Physiology; Inner and Outer Hair Cells: Structure and Function; The Passive, Asymmetric Traveling Wave; OHCs and Active Traveling Wave
Outer Hair Cells and Oto-Acoustic EmissionsHearing Aids for Sensory SNHL Caused by OHC Damage; References; 3 Inner Hair Cell Damage, Traveling Wave Envelopes, and Cochlear Dead Regions; Introduction; IHCs: Functions and Consequences of Damage; Asymmetry of the Traveling Wave Envelope; VIII Nerve Tuning Curves: Also Asymmetric; Psychophysical Tuning Curves: Also Asymmetric; Traveling Wave Asymmetry and Audiograms Associated With Cochlear Dead Regions; Low-Frequency Dead Regions and the Moderate Reverse Audiogram; High-Frequency Dead Regions and the Severe, Precipitous Audiogram
Other Audiograms Associated With Cochlear Dead RegionsMoore's Threshold Equalizing Noise (TEN) Test for Cochlear Dead Regions; TEN Test Procedures; Perceptions of Sounds Within a Dead Hair Cell Region; Dead Regions and Implications for Amplification; Closing Remarks; References; 4 Early Hearing Aid Fitting Methods: Why So Many?; Introduction; Lenses for the Eye Versus Hearing Aids for the Ear; SNHL: The Audibility Problem and the Speech-in-Noise Problem; A Short History of Hearing Aid Technology; Linear Hearing Aids; Dynamic Range: Reduced Versus Normal
A Short History of Linear-Based Fitting MethodsReferences; 5 Verification with Real Ear Measures: Yesterday and Today; Introduction; Real Ear Measurement: Components; Yesterday's Real Ear Measurement: Procedures; Gain in dB Versus Output in dB SPL; Effects of Compression on Gain (dB) Versus Output (dB SPL); Today's Real Ear Measurement; Those Awful Transforms! From the Audiogram to the SPL-o-Gram; Procedures in Today's Real Ear Measurement; Points to Ponder; Epilogue; References; 6 Compression and the DSL and NAL Fitting Methods; Introduction; Two Types of Compression for Two Types of SNHL
Summary Explaining the many developments that have taken place in the world of hearing aid compression, fitting methods, and real ear measurement, this text aims to make difficult concepts easier to understand and to explain in plain language many topics pertaining to compression. Directional microphones and digital features of noise reduction, feedback reduction, and expansion are also covered
Notes Loudness Growth and Consequences of Reduced Dynamic Range
Print version record
Subject Compression (Audiology)
Hearing aids -- Fitting.
Compression (Audiology)
Hearing aids -- Fitting
Form Electronic book
ISBN 9781597569880
1597569887