Fitting Frequency-Lowering Signal Processing Applying the American Academy of Audiology Pediatric Amplification Guideline: Updates and Protocols (Record no. 2529)
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| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | OSt |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20160506100402.0 |
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| 040 ## - CATALOGING SOURCE | |
| Transcribing agency | National Acoustics Laboratories |
| 245 ## - TITLE STATEMENT | |
| Title | Fitting Frequency-Lowering Signal Processing Applying the American Academy of Audiology Pediatric Amplification Guideline: Updates and Protocols |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc | Background: Although guidelines for fitting hearing aids for children are well developed and have strong<br/>basis in evidence, specific protocols for fitting and verifying technologies can supplement such guidelines.<br/>One such technology is frequency-lowering signal processing. Children require access to a broad bandwidth<br/>of speech to detect and use all phonemes including female /s/. When access through conventional amplification<br/>is not possible, the use of frequency-lowering signal processing may be considered as a means to<br/>overcome limitations. Fitting and verification protocols are needed to better define candidacy determination<br/>and options for assessing and fine tuning frequency-lowering signal processing for individuals.<br/>Purpose: This work aims to (1) describe a set of calibrated phonemes that can be used to characterize<br/>the variation in different brands of frequency-lowering processors in hearing aids and the verification with<br/>these signals and (2) determine whether verification with these signal are predictive of perceptual<br/>changes associated with changes in the strength of frequency-lowering signal processing. Finally, we<br/>aimed to develop a fitting protocol for use in pediatric clinical practice.<br/>Study Sample: Study 1 used a sample of six hearing aids spanning four types of frequency lowering algorithms<br/>for an electroacoustic evaluation. Study 2 included 21 adultswho had hearing loss (mean age 66 yr).<br/>Data Collection and Analysis: Simulated fricatives were designed to mimic the level and frequency<br/>shape of female fricatives extracted from two sources of speech. These signals were used to verify the<br/>frequency-lowering effects of four distinct types of frequency-lowering signal processors available in<br/>commercial hearing aids, and verification measures were compared to extracted fricatives made in a<br/>reference system. In a second study, the simulated fricatives were used within a probe microphone measurement<br/>system to verify a wide range of frequency compression settings in a commercial hearing aid,<br/>and 27 adult listeners were tested at each setting. The relation between the hearing aid verification measures<br/>and the listener’s ability to detect and discriminate between fricatives was examined.<br/>Results: Verification measures made with the simulated fricatives agreed to within 4 dB, on average, and<br/>tended to mimic the frequency response shape of fricatives presented in a running speech context. Some<br/>processors showed a greater aided response level for fricatives in running speech than fricatives presented<br/>in isolation.Resultswith listeners indicated that verified settings that provided a positive sensation level of /s/<br/>and that maximized the frequency difference between /s/ and /Ð / tended to have the best performance. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | children, digital signal processing, frequency-lowering, guidelines, hearing aids, hearing loss, protocols, speech acoustics |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Susan Scollie |
| 773 0# - HOST ITEM ENTRY | |
| Relationship information | 27:219–236 (2016) |
| Title | Journal of American Academyof Audiolology |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="http://dspace.nal.gov.au/xmlui/bitstream/handle/123456789/339/Fitting%20frequency%20lowering%20signal%20processing%20applying%20the%20American%20Academy%20of%20Audiology%20pediatric%20amplificaiton%20guideline%20updates%20and%20protocols.pdf?sequence=1&isAllowed=y">http://dspace.nal.gov.au/xmlui/bitstream/handle/123456789/339/Fitting%20frequency%20lowering%20signal%20processing%20applying%20the%20American%20Academy%20of%20Audiology%20pediatric%20amplificaiton%20guideline%20updates%20and%20protocols.pdf?sequence=1&isAllowed=y</a> |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Universal Decimal Classification |
| Koha item type | Journal article |
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