Digital Hearing Aids is an essential reference for information about the latest innovations in digital hearing aid technology. Concise descriptions and easy-to-reference tables and diagrams enable the reader to rapidly gain a solid understanding of digital signal processing, including such important topics as adaptive acoustic directionality, adaptive noise reduction, adaptive feedback cancellation, and sound classification. The book is divided into three main sections, with the first section providing an overview of foundational concepts, the second section presenting detailed analysis of state-of-the-art processing techniques, and the third section describing specific technical aspects of digital processing.
Each chapter opens with a brief overview of topics
and questions, rapidly orienting the reader with the scope of the material
Mathematical examples in the third section of the
book allow the reader to work through practical calculations, comprehend the
nuts and bolts of the processing schemes, and understand the benefits and
limitations of each
More than 170 illustrations and diagrams aid the
comprehension of key concepts
This handbook is ideal for audiologists,
otolaryngologists, speech-language pathologists, and for other professionals involved in the applications of digital signal processing.
TABLE OF CONTENTS Foreword Preface Part I Basics and overview 1. Acoustic signals 2. Hearing impairment 3. Overview of hearing aid characteristics 4. Basic amplification schemes Part II Signal processing in digital hearing aids 5. Static behavior of digital WDRC 6. Temporal behavior of digital WDRC 7. Acoustic directionality 8. Noise reduction 9. Feedback cancellation 10. Sound classification Part III Calculations in the digital processor 11. Segment-wise processing with Fourier transforms 12. Digital filters 13. Digital level measurement 14. Autocorrelation and prediction 15. How everything fits together