Critical Band Based Spectral Compression: An Insight into the Future of Digital Hearing Aids - Couverture souple

Patil, Vikrant; Krishna, Y.; Bellur, Rajashekhar

 
9783848481217: Critical Band Based Spectral Compression: An Insight into the Future of Digital Hearing Aids
Couverture souple
ISBN 10 : 3848481219 ISBN 13 : 9783848481217
Editeur : LAP LAMBERT Academic Publishing, 2012

Synopsis

Individuals with sensorineural hearing impairment often experience difficulty in understanding speech. This can be attributed to the widened auditory filters, which results in greater spectral spread across the critical bands and thus causing increased spectral masking. Off late various methods have been used to compress the signal towards the center of the critical band. In our study we have used gammatone filters to split the speech signal into various bands and each critical band was compressed along the frequency axis. 30 hearing impaired subjects participated in a perceptual judgment and speech identification task. From the results of our study we confirmed that processed speech became more intelligible. Thus our study highlights the need for devising a processing algorithm that can achieve spectral compression of signal towards the center of critical band in real-time. Such a processing algorithm when incorporated in digital hearing aids may prove to be beneficial for individuals with sensorineural hearing loss to improve their perceived speech intelligibility.

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Présentation de l'éditeur

Individuals with sensorineural hearing impairment often experience difficulty in understanding speech. This can be attributed to the widened auditory filters, which results in greater spectral spread across the critical bands and thus causing increased spectral masking. Off late various methods have been used to compress the signal towards the center of the critical band. In our study we have used gammatone filters to split the speech signal into various bands and each critical band was compressed along the frequency axis. 30 hearing impaired subjects participated in a perceptual judgment and speech identification task. From the results of our study we confirmed that processed speech became more intelligible. Thus our study highlights the need for devising a processing algorithm that can achieve spectral compression of signal towards the center of critical band in real-time. Such a processing algorithm when incorporated in digital hearing aids may prove to be beneficial for individuals with sensorineural hearing loss to improve their perceived speech intelligibility.

Biographie de l'auteur

Mr. Vikrant Patil is currently working as a consultant audiologist at National Hearing Care Australia, with particular emphasis in amplification and aural rehabilitation of adults with hearing impairment. He has degrees from Manipal University (India) (BASLP, 2004, MASLP 2006). He is also pursuing his Doctor of Audiology from University of Florida.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
LAP LAMBERT Academic Publishing
Date d'édition
2012
Langue
anglais
ISBN 10 
3848481219
ISBN 13 
9783848481217
Reliure
Broché
Nombre de pages
60
Coordonnées du fabricant
non disponible
Personne responsable
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