What Is a Speech Audiometry Test?

If you’re someone who struggles to recognize words clearly during conversations but can detect sounds, it’s time to consider a speech audiometry test. This test evaluates how well a person hears and understands speech. Unlike pure-tone hearing tests that focus mainly on detecting beeps or tones, speech audiometry measures how the auditory system processes spoken language.

The test is commonly performed alongside pure-tone audiometry during a comprehensive hearing exam. Together, these assessments may provide a more complete picture of both hearing sensitivity and speech clarity in everyday situations.

What Are the Core Components of the Speech Audiometry Test?

Speech audiometry includes several measurements that evaluate different aspects of speech, hearing, and listening comfort. Each component provides specific information about how a person detects, understands, and tolerates speech sounds.

Speech Reception Threshold (SRT)

The Speech Reception Threshold (SRT) measures the softest speech level a person can understand correctly at least 50% of the time. During the test, the audiologist presents two-syllable words, commonly called spondee words, through headphones. These words place equal stress on both syllables and may include examples such as: “baseball”, “hotdog”, “toothbrush”, “cowboy”.

The patient repeats the words they hear while the audiologist gradually changes the volume level to determine the lowest level where speech remains understandable.

SRT testing serves several important purposes. One major function is verifying the pure-tone hearing test results. In most cases, SRT scores closely match pure-tone average thresholds. Large differences between these results may suggest inconsistent responses or the need for further testing.

SRT testing also helps establish appropriate presentation levels for additional speech tests performed later during the evaluation.

Word Recognition Score (WRS) / Speech Discrimination

The Word Recognition Score (WRS), also called speech discrimination testing, measures how clearly a person understands spoken words when speech is presented at a comfortable loudness level.

Unlike SRT testing, which focuses on the softest understandable speech, WRS evaluates speech clarity. The patient listens to single-syllable words and repeats them back while the audiologist records the number answered correctly.

The final result is reported as a percentage score. Higher scores indicate clearer speech understanding.

For example:

• 90–100% often reflects excellent speech understanding
• Lower scores may indicate increasing speech clarity difficulties

This test helps identify whether hearing problems involve:

• Reduced sound detection
• Distorted speech processing
• Inner ear damage
• Auditory nerve involvement

People with reduced speech discrimination often report that speech sounds unclear or muffled, even when it is loud enough.

WRS testing also helps predict hearing aid outcomes. Patients with stronger word recognition ability often respond more successfully to amplification because their auditory system can still process speech information effectively once sounds become audible.

Most Comfortable Listening Level (MCL)

The Most Comfortable Listening Level (MCL) measures the sound level where speech feels clearest and most comfortable for sustained listening. During the test, speech volume gradually increases while the patient indicates when the sound reaches the most comfortable level for conversation.

This measurement helps audiologists understand an individual’s preferred listening range and can play an important role in hearing aid programming. MCL varies between individuals. Some people prefer slightly softer listening levels, while others feel more comfortable with louder speech presentations.

For patients with hearing loss, identifying the MCL helps ensure hearing devices amplify speech to levels that remain useful without becoming overwhelming.

MCL testing may also provide insight into listening fatigue. People who struggle to understand speech often require louder presentation levels to achieve comfortable communication, especially in noisy environments.

Uncomfortable Listening Level (UCL)

The Uncomfortable Listening Level (UCL), sometimes called the Loudness Discomfort Level (LDL), measures the point where sound becomes uncomfortably loud. During testing, the audiologist gradually increases speech volume until the patient indicates the sound is no longer tolerable.

This measurement is important because hearing tolerance differs widely between individuals. Some patients with hearing loss develop reduced sound tolerance, meaning moderately loud sounds may feel excessively intense or painful.

UCL testing helps audiologists determine the dynamic range of hearing, which is the difference between the softest audible sound and the loudest tolerable sound. Understanding this range is especially important for hearing aid fitting. Amplification must improve speech audibility without exceeding the patient’s comfort threshold.

Patients with narrow dynamic ranges may require carefully adjusted hearing aid settings to avoid discomfort while still improving speech clarity.

UCL testing can also help identify abnormal sound sensitivity conditions such as hyperacusis, where everyday sounds become unusually uncomfortable.

Why is Speech Audiometry Performed?

Speech audiometry is used to understand how well a person hears and processes spoken language, in addition to detecting sound levels. It adds functional detail to standard hearing tests and helps audiologists build a clearer picture of communication ability.

Unlike pure-tone testing, which focuses on detecting tones at different frequencies, speech audiometry shows how hearing loss affects real-world communication. This makes it a key part of diagnosing and managing hearing problems.

1. Verifies Pure Tone Tests

One of the main reasons speech audiometry is performed is to confirm the results of pure-tone audiometry.

In a typical hearing assessment, audiologists compare speech reception thresholds (SRT) with pure-tone average (PTA). In most cases, these results should closely align. If there is a large mismatch, it may indicate inconsistent responses, test reliability issues, or the need for further evaluation.

For example, if pure-tone testing suggests mild hearing loss but speech results show significantly poorer understanding, this may signal that something more complex is affecting auditory processing. 

2. Diagnoses Hearing Loss Type

Speech audiometry also helps audiologists better understand the type and possible source of hearing loss. Different patterns in speech understanding can point toward different auditory conditions. For example:

• Conductive hearing loss often shows reduced volume perception but relatively strong word recognition when the sound is amplified
• Sensorineural hearing loss may show reduced speech clarity, even when sounds are loud enough
• Central or neural issues may result in disproportionately poor speech understanding compared to tone detection

Comparing speech results with pure-tone thresholds allows clinicians to better determine whether hearing difficulties are primarily related to sound transmission, inner ear damage, or neural processing issues.

3. Supports Hearing Aid Fitting

Speech audiometry plays a direct role in hearing aid selection and programming. Test results help audiologists decide how much amplification is needed and how speech should be processed to improve clarity. They also help set realistic expectations for hearing aid performance.

For example strong speech understanding scores often indicate good potential benefit from hearing aids, and lower scores may suggest that additional strategies (like noise reduction or assistive devices) are needed to support communication

Speech results also help fine-tune hearing aid settings, such as:

• Gain (amplification level)
• Compression settings
• Speech enhancement features
• Directional microphone performance

By understanding how a patient processes speech, audiologists can adjust devices ithout making sound uncomfortably loud or distorted.

Conclusion

Speech audiometry results help verify hearing test, identify the type of hearing loss, guide hearing aid fitting, and explain real-world communication difficulties. For many patients, this test is the key to understanding why hearing may feel difficult even when basic hearing tests seem normal.

At Bloor Hearing Clinic, adult hearing assessments may include speech audiometry as part of a broader evaluation of hearing and communication abilities. This can help our audiologists better understand each individual’s hearing needs and discuss appropriate management or support options based on the assessment findings.