Proportional Binaural Prescription Method (PBPM) : an algorithm for the fitting of hearing aids in sugjects with cochlear pathology
Proportional Binaural Prescription Method (PBPM) : an algorithm for the fitting of hearing aids in sugjects with cochlear pathology
A clinical study was carried out on a population of subjects with hearing loss of primary cochlear origin. Linear and non-linear amplification paradigms as well as the rationale for the use of binaural amplification were examined in relation to hearing aid usage and sensorineural hearing loss. A pilot study proved that this group of subjects was able to express a preference for non-linear amplification.
Regression analysis yielded data for the construction of a new prescriptive method which was applied to 24 subjects in a balanced clinical study where all treatments were randomised using Greco-Latin square sequences. Application of the Proportional Binaural Prescriptive Method (PBPM) led to a significant increase in scores for speech discrimination in noise and greater self-reported satisfaction, comfort and ease even under difficult listening conditions. This prescriptive method offers a unique contribution to the field of hearing aid fitting techniques in that it is a binaural method and is the first prescriptive method to be based on proportional dynamic range rather than on threshold measurements and can therefore theoretically be applied to any type of hearing loss.
Furthermore, specifications include alternative conversion factors which makes it possible to compare target and effective readings using a 2cc coupler. Single-band compression aids can be used for fitting so sophisticated signal processing is not required. This responds to the need for cost-effective methods for application in the field of hearing aid fitting.(DX192,450)
University of Southampton
Ballantyne, Deborah
a4efcc33-d071-4b64-bef1-f978f745a98c
1995
Ballantyne, Deborah
a4efcc33-d071-4b64-bef1-f978f745a98c
Ballantyne, Deborah
(1995)
Proportional Binaural Prescription Method (PBPM) : an algorithm for the fitting of hearing aids in sugjects with cochlear pathology.
University of Southampton, Doctoral Thesis.
Record type:
Thesis
(Doctoral)
Abstract
A clinical study was carried out on a population of subjects with hearing loss of primary cochlear origin. Linear and non-linear amplification paradigms as well as the rationale for the use of binaural amplification were examined in relation to hearing aid usage and sensorineural hearing loss. A pilot study proved that this group of subjects was able to express a preference for non-linear amplification.
Regression analysis yielded data for the construction of a new prescriptive method which was applied to 24 subjects in a balanced clinical study where all treatments were randomised using Greco-Latin square sequences. Application of the Proportional Binaural Prescriptive Method (PBPM) led to a significant increase in scores for speech discrimination in noise and greater self-reported satisfaction, comfort and ease even under difficult listening conditions. This prescriptive method offers a unique contribution to the field of hearing aid fitting techniques in that it is a binaural method and is the first prescriptive method to be based on proportional dynamic range rather than on threshold measurements and can therefore theoretically be applied to any type of hearing loss.
Furthermore, specifications include alternative conversion factors which makes it possible to compare target and effective readings using a 2cc coupler. Single-band compression aids can be used for fitting so sophisticated signal processing is not required. This responds to the need for cost-effective methods for application in the field of hearing aid fitting.(DX192,450)
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Published date: 1995
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Local EPrints ID: 459384
URI: http://eprints.soton.ac.uk/id/eprint/459384
PURE UUID: 7307a4d3-25cb-4070-81ae-822d4e830226
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Date deposited: 04 Jul 2022 17:09
Last modified: 23 Jul 2022 00:30
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Author:
Deborah Ballantyne
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