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Active Noise Control for Hearing Screening Test: Simulation and Experiment

Author

Listed:
  • Dhifaf Azeez

    (Universiti Kebangsaan Malaysia, Malaysia)

  • Mohd Alauddin Mohd Ali

    (Universiti Kebangsaan Malaysia, Malaysia)

  • Hafizah Husain

    (Universiti Kebangsaan Malaysia, Malaysia)

  • Gan Kok Beng

    (Universiti Kebangsaan Malaysia, Malaysia)

  • Cila Umat

    (Universiti Kebangsaan Malaysia, Malaysia)

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.

Suggested Citation

  • Dhifaf Azeez & Mohd Alauddin Mohd Ali & Hafizah Husain & Gan Kok Beng & Cila Umat, 2010. "Active Noise Control for Hearing Screening Test: Simulation and Experiment," International Journal of E-Health and Medical Communications (IJEHMC), IGI Global, vol. 1(3), pages 67-78, July.
    • Handle: RePEc:igg:jehmc0:v:1:y:2010:i:3:p:67-78
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