1. Pure Tone Audiometry Basic Principles of Sound The Audiometer
Test Environment
Patient’s Role
Clinician’s Role
Air Conduction Audiometry
Bone Conduction Audiometry
Audiogram Interpretation
Masking

2. Basics of Sound Sound Waves and Propagation of Sound Frequency (Hz)
Resonance
Intensity (The Decibel or dB)

3. Audiometer
Generic Audiometer

4. Audiometer
Clinical and Portable Audiometer

5. Audiometer
Earphones

6. Audiometer
Insert Earphone

7. Audiometer
Bone Conduction Vibrator

8. Audiometer
Computerized Audiometer

9. Test Environment
Sound Treated Booth

10. Test Environment
Circumaural Enclosures

11. Test Environment
Quiet Room

12. Patient’s Role Hand Raising Signal Button Verbal Response
False Positives and False Negatives

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

14. Clinician’s Role Instructions What are they listening for
How to respond
Verify they understand instructions

15. Clinician’s Role Position of Client - Adults and Children
Earphone Placement

16. Clinician’s Role Screening Test Procedures (adults) Instructions
Test Frequencies
Disposition of Failures

17. Clinician’s Role Pure Tone Threshold Procedures Self-test
Place earphones on patient
Test better ear first
Order of test frequencies
Test other ear
Use ASHA protocol for threshold testing.

18. Clinician’s Role Pure Tone Average (PTA) Three tone average
Two tone average
Other methods

19. Clinician’s Role Degree of Hearing Loss based on PTA None Slight Mild
Moderate
Moderately Severe
Severe
Profound

20. Clinician’s Role Role of Bone Conduction Purpose Mastoid Placement
Forehead Placement

21. Audiograms
Basic Audiogram

22. Audiograms
Symbols

23. Audiograms
Type
Degree
Configuration

24. Audiograms
Type of Loss - Conductive

25. Audiograms
Type of Loss - Sensorineural

26. Audiograms
Type of Loss - Mixed

27. Audiograms
Configuration of Loss - Flat

28. Audiograms
Configuration of Loss - Sloping (falling)

29. Audiograms
Configuration of Loss - Rising

30. Audiograms
Configuration of Loss - Tent

31. Audiograms
Configuration of Loss - Mid-frequency or Cookie-bite

32. Masking Cross Hearing and Interaural Attenutation Masking Defined
Rules
Types of Masking Noise

33. Masking Cross Hearing Interaural Attenuation Definition Variables
transducers
frequency
individual variability

34. Masking
Definition
Introduction of noise in NTE for the purpose of eliminating cross-hearing.

35. Masking Rule Minimum IA values
Apply masking to NTE whenever the AC of the TE exceeds the BC for the NT cochlea by the amount of the minimum IA values.
Minimum IA values
Supraaural phones = 40 dB
Insert phones = 70 dB
Bone conduction = 0 dB

36. Masking
Types of Masking Noise
White Noise
Narrow Band Noise

37. Summary