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https://ptsldigital.ukm.my/jspui/handle/123456789/487206Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | Nasharuddin Zainal, Prof. Ir. Dr. | - |
| dc.contributor.author | Abdulkarim Bashir B. Shalool (P65757) | - |
| dc.date.accessioned | 2023-10-11T02:30:22Z | - |
| dc.date.available | 2023-10-11T02:30:22Z | - |
| dc.date.issued | 2021-04-19 | - |
| dc.identifier.other | ukmvital:124820 | - |
| dc.identifier.uri | https://ptsldigital.ukm.my/jspui/handle/123456789/487206 | - |
| dc.description | Hearing loss is the third most common chronic condition affecting the world population. Early detection of hearing loss is essential for maximum benefit. Therefore, national and international organizations recommend hearing screening tests, especially in children, so that intervention can be done at early ages. However, most individuals with hearing problemscannot access the limited hearing services resulting in a delay in obtaining treatment. Diagnostic hearing testing is impractical due to the high costs and the requirement of having trained personnel to conduct the test, especially in developing countries. Therefore, a hearing screening system that can address the issues mentioned above is desirable. This research's main objective was to develop an interactive automated hearing screening system (i-AHEAD) with passive noise cancellation headphones. The i-AHEAD system fulfills the recommendation by the standard for a hearing screening test with the absence of a soundproof room or booth. The i-AHEAD consists of a laptop, a 24-bit resolution sound card, a calibrated headphone, and a microphone environmental noise level monitoring. Using the circum-aural cups covered with acoustic absorption materials with a high absorption coefficient against sound, enhanced noise reduction in both low and high frequencies noise. It will ensure that the noise levels will not exceed the allowable noise level specified by the standard to run the hearing test. The standard audiology earphones (TDH-49) were chosen because it is the standard headphone used in clinical audiology with standard calibration values. It can be calibrated according to the guidelines using the developed calibration software, a standard artificial ear 6cc coupler, and a Class 1 sound level meter. The sound level meter measures the noise inside and in the free field using the one-third octave band frequency. The noise attenuation measurements were done in the soundproof room by creating a diffuse field using loudspeakers that emit the noise. Two microphones have been used to read the noise outside and inside of the ear cups simultaneously. The experiment results showed that the proposed method increases the attenuation level for low frequency by 19.5 dB at 500 Hz while there is no significant difference at high frequencies. The study was carried out in two stages, as follows: hearing screening using i-AHEAD system inside a seminar room, which represents a typical classroom; and a diagnostic hearing assessment in a sound-treated booth for validation. The diagnostic pure tone audiometry (PTA) hearing assessment served as the gold standard test to allow the computation of the i-AHEAD's sensitivity and specificity. The study was constrained to PTA hearing screening at four frequencies (500, 1000, 2000, and 4000 Hz) at hearing threshold 25 and 40 dB HL. A total of 186 participants were recruited at the Audiology and Speech Sciences Clinic, UKM. The specificity and sensitivity were 91% and 95%, respectively, at 40 dB screening cut-off point. However, the specificity decreased to 38.9% at 25 dB HL when the 500-Hz test tone was included. The i-AHEAD system with the passive noise cancellation headphones is useful for screening significant hearing loss at 40 dB HL, but further improvement is needed for this tool to screen mild hearing loss at 25 dB HL cut-off level.,Ph.D. | - |
| dc.language.iso | eng | - |
| dc.publisher | UKM, Bangi | - |
| dc.relation | Faculty of Engineering and Built Environment / Fakulti Kejuruteraan dan Alam Bina | - |
| dc.rights | UKM | - |
| dc.subject | Universiti Kebangsaan Malaysia -- Dissertations | - |
| dc.subject | Dissertations, Academic -- Malaysia | - |
| dc.subject | Hearing loss | - |
| dc.subject | Noise | - |
| dc.subject | Hearing screening | - |
| dc.title | An interactive hearing screening system with passive noise cancellation headphone | - |
| dc.type | Theses | - |
| dc.format.pages | 133 | - |
| dc.identifier.barcode | 005831(2021)(PL2) | - |
| Appears in Collections: | Faculty of Engineering and Built Environment / Fakulti Kejuruteraan dan Alam Bina | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| ukmvital_124820+SOURCE1+SOURCE1.0.PDF Restricted Access | 2.14 MB | Adobe PDF |  View/Open |
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