Audiology Quiz 3

What do the symbols 'O' and 'X' represent on an audiogram?

Right ear and left ear air conduction respectively.

What type of hearing loss shows a large air-bone gap but normal bone conduction?

Conductive hearing loss.

What is the main purpose of speech audiometry?

To evaluate a patient's ability to understand speech.

Name two transducers used in speech testing.

Inserts and headphones (or speakers).

Which method is more accurate for presenting speech stimuli?

Recorded speech.

What is the typical decibel range used in speech testing?

-10 to 115 dB HL.

What tool monitors voice level during MLV testing?

VU meter.

Define MCL.

Most Comfortable Loudness Level for speech.

Define UCL.

Uncomfortable Loudness Level (Threshold of Discomfort).

How do you calculate Dynamic Range (DR)?

UCL minus SRT.

What is the typical starting level for MCL testing?

Around 50–60 dB HL.

What does SDT measure?

The lowest level where speech is heard.

What kind of words are used for SRT?

Spondaic (two-syllable) words with equal stress.

How much higher is SRT than SDT?

About 5–10 dB higher.

The SRT is typically consistent with what frequency on the audiogram?

1000 Hz pure tone threshold.

How many dB above the SRT is WRS presented?

40 dB SL above the SRT.

If SRT = 25 dB HL, what is the WRS presentation level?

65 dB HL.

What is a phonetically balanced word list?

A list representing typical English speech sounds (e.g., W-22).

Difference between open-set and closed-set testing?

Open-set has unfamiliar words; closed-set has limited choices.

What does a 72% WRS indicate?

Moderate difficulty understanding speech.

Define Signal-to-Noise Ratio (SNR).

The difference in intensity between speech and background noise.

If noise is 10 dB louder than speech, what is the SNR?

-10 dB.

Name a common speech-in-noise test.

SPIN, HINT, or QuickSIN.

What does the Performance Intensity Function show?

Word recognition improvement as loudness increases.

Why compare SRT and PTA?

To confirm accuracy and consistency between speech and tone results.

Calculate DR if SRT=35 dB HL and UCL=95 dB HL.

60 dB.

What does a 60% WRS indicate?

Poor speech recognition ability.