Igor Sikorsky Kyiv Polytechnic Institute
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  5. AP-02 audiometer

AP-02 audiometer

Laboratory of Medical Devices and Systems, Room 605, building 21

AP-02 audiometer

Purpose

Designed to determine human hearing thresholds by air conduction and for comparative assessment by bone conduction. Hearing thresholds are determined by presenting pure tones of different frequency and intensity to the subject. The results are recorded on an audiogram form from the patient's responses by marking points where the bars linked to the frequency and intensity switches cross.

Courses

  • Acoustic medical devices
  • Measurement methods and instruments 1. Acoustic measurements

Laboratory and practical work

  • Audiometers and hearing aids. Design principles, structure and operating algorithms
Room 605, building 21

Description and specifications

Specifications

  • Hearing thresholds are determined by presenting pure tones of different frequency and intensity.

The results are recorded on an audiogram form from the patient's responses by marking points where the bars linked to the frequency and intensity switches cross.

  • Pure tone frequencies: 125, 250, 500, 1000, 2000, 3000, 4000, 6000 and 8000 Hz +/- 4%
  • Harmonic distortion of pure tones at the terminals of the air and bone conduction earphones at maximum intensity levels does not exceed: 7%
  • Error of the maximum intensity level, no more than: +/- 3 dB

The intensity level is changed in steps of

  • 6 +/- 1.5 dB
  • The masking noise intensity level can be changed within: from 20 to 100 dB (in steps of 10 +/- 2 dB)

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