1. Audiometry

2. Pure Tone Audiometry
• The Audiometer
• Test Environment
• Patient’s Role
• Clinician’s Role
• Air Conduction Audiometry
• Bone Conduction Audiometry
• Audiogram Interpretation
• Masking

3. Audiometer
• Generic Audiometer

4. Audiometer
• Clinical and Portable Audiometer

5. Audiometer
• Earphones

6. Audiometer
• Bone Conduction Vibrator

7. Test Environment
• Sound Treated Booth

8. Test Environment
• Quiet Room

9. Patient’s Role
• Hand Raising
• Signal Button
• Verbal Response

10. Clinician’s Role
• Instructions
• Patient’s Position
• Placement of Earphones
• Test Procedures for Pure Tone Thresholds

11. Clinician’s Role
• Degree of Hearing Loss based on PTA
• Mild (16 to 40dB)
• Moderate (41 to 70dB)
• Severe (71 to 90dB)
• Profound (91 to onward)

12. Audiograms
• Basic Audiogram

13. Audiograms
• Symbols

14. Audiograms
• Type of Loss – Conductive
• Difference between A/C and B/C More
than 15 dB.
• Bone Conduction Normal

15. Audiograms
• Type of Loss – Sensorineural
• Difference between A/C and B/C less than
15 dB.
• Bone Conduction will be abnormal

16. Audiograms
• Type of Loss – Mixed
• Difference between A/C and B/C is more
the 15 dB.
• Bone conduction will be abnormal

17. Masking