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Active Noise Control for Hearing Screening Test: Simulation and Experiment

Active Noise Control for Hearing Screening Test: Simulation and Experiment

Dhifaf Azeez, Mohd Alauddin Mohd Ali, Hafizah Husain, Gan Kok Beng, Cila Umat
Copyright: © 2010 |Volume: 1 |Issue: 3 |Pages: 12
ISSN: 1947-315X|EISSN: 1947-3168|EISBN13: 9781609609658|DOI: 10.4018/jehmc.2010070107
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MLA

Azeez, Dhifaf, et al. "Active Noise Control for Hearing Screening Test: Simulation and Experiment." IJEHMC vol.1, no.3 2010: pp.67-78. http://doi.org/10.4018/jehmc.2010070107

APA

Azeez, D., Ali, M. A., Husain, H., Beng, G. K., & Umat, C. (2010). Active Noise Control for Hearing Screening Test: Simulation and Experiment. International Journal of E-Health and Medical Communications (IJEHMC), 1(3), 67-78. http://doi.org/10.4018/jehmc.2010070107

Chicago

Azeez, Dhifaf, et al. "Active Noise Control for Hearing Screening Test: Simulation and Experiment," International Journal of E-Health and Medical Communications (IJEHMC) 1, no.3: 67-78. http://doi.org/10.4018/jehmc.2010070107

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Abstract

A hearing screening test is a method to determine human ear disorders and conventional audiometers and audiologists are required to perform the test. However, this procedure is difficult to implement, especially in a remote site such as a factory or a school due to the ambient noise that may cause test inaccuracy. In this work, the application of active noise control (ANC) is proposed to reduce the ambient noise using a personal computer in a hearing screening test. The ANC algorithm was simulated in MATLAB software and implemented using a computer with data acquisition modules and LabVIEW software. Results show that anti-noise was successfully generated in the electrical domain but no reduction was observed in the acoustic domain. ANC is a deterministic application that requires a real-time operating system to respond to the input with precisely timed output. To have an effective ANC system, the processing time has to be less than 0.125 ms at 8 KHz sampling rate.

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