MEDIVEERSETHE PRACTICAL HUB
Control panel: located on the reference instrument. Compare its shape and position with the apparatus used in your practical.
Zoom in, then drag to inspect. Keyboard: + / − to zoom, arrows to pan, 0 to reset. Tap the numbered markers to explore parts.
Audiometer — reference view
Image: Joe Haupt from USA · Source / original · CC BY-SA 2.0Resized and converted to WebP; original colours retained.
Audiometer
Pure-tone audiometer · hearing tester
What is its use?
Measures hearing thresholds for defined test signals.
Tap a number to locate its part. Zoom, drag or use full screen to inspect the reference. Models and graduations can differ; check the actual apparatus used in your laboratory.
How to recognise it.
- Electronic frequency and intensity controls
- Output transducer such as earphones or a bone vibrator
- Thresholds are documented as an audiogram
Bedside tuning-fork tests are screening comparisons; audiometry provides frequency-specific threshold information.
Point them out.
Choose a part to bring its numbered marker into view.
The science behind the reading.
Calibrated tones are delivered at selected frequencies and sound levels; the lowest reliably detected level is established.
Think first. Then reveal.
Explain your answer aloud before opening it.
01What is an audiogram?+
A graph of hearing threshold across test frequencies.
02What does dB HL mean?+
Decibels hearing level, referenced to standard hearing thresholds for the frequency and transducer.
03Why compare air and bone conduction?+
Their relationship helps distinguish conductive components from sensorineural impairment.
04Why is masking sometimes required?+
To prevent the non-test ear from responding to a stimulus intended for the test ear.
Read the references.
Teaching and clinical references are listed here. Image attribution and licence appear below the viewer.