Development of Digital Hearing Aids

This review discusses the challenges in hearing aid design and fitting and the recent developments in advanced signal processing technologies to meet these challenges. The first part of the review discusses the basic concepts and the building blocks of digital signal processing algorithms, namely, the signal detection and analysis unit, the decision rules, and the time constants involved in the execution of the decision. In addition, mechanisms and the differences in the implementation of various strategies used to reduce the negative effects of noise are discussed. These technologies include the microphone technologies that take advantage of the spatial differences between speech and noise and the noise reduction algorithms that take advantage of the spectral difference and temporal separation between speech and noise. The specific technologies discussed in this paper include first-order directional microphones, adaptive directional microphones, second-order directional microphones, microphone matching algorithms, array microphones, multichannel adaptive noise reduction algorithms, and synchrony detection noise reduction algorithms. Verification data for these technologies, if available, are also summarized.

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“…For a detailed explanation on the differences in hearing aids, please refer to Schweitzer, 1997.…”

Section: Differentiating Hearing Aidsmentioning

confidence: 99%

Challenges and Recent Developments in Hearing Aids: Part I. Speech Understanding in Noise, Microphone Technologies and Noise Reduction Algorithms

Chung

2004

Trends in Amplification

186

171

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“…There has been an extreme technological development of hearing aids over the past decades (Arlinger et al, 2009;Schweitzer, 1997). Parallel to the technological advancements research has developed new knowledge on sensorineural hearing loss (Arlinger et al, 2009;Saremi & Stenfelt, 2011).…”

Section: Hearing Aids and Cochlear Implants (Ci)mentioning

confidence: 99%

Cognitive capacities and composite cognitive skills in individuals with Usher syndrome type 1 and 2

Henricson

2015

Studies From the Swedish Institute for Disability Research

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“…Although digital hearing aids have been available for only a decade, approximately 90% of the hearing aids dispensed today are digital hearing aids. 1,2 Our journal, Trends, has been active in educating readers about digital technology in hearing aids from the introduction of the first behind-the-ear and in-the-ear digital hearing aids in 1997 3 and in providing updated information on a regular basis. [4][5][6][7][8][9][10] The incorporation of digital technology in hearing aids has led to several important changes in hearing aid capabilities that could not have been achieved with analog technology.…”

Section: About the Authorsmentioning

confidence: 99%

From the Editor

Neuman¹

2007

Trends in Amplification

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Development of Digital Hearing Aids

Cited by 12 publications

References 68 publications

Challenges and Recent Developments in Hearing Aids: Part I. Speech Understanding in Noise, Microphone Technologies and Noise Reduction Algorithms

Challenges and Recent Developments in Hearing Aids: Part I. Speech Understanding in Noise, Microphone Technologies and Noise Reduction Algorithms

Cognitive capacities and composite cognitive skills in individuals with Usher syndrome type 1 and 2

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