Learn About Reading Your Hearing Test Results

Understanding the Basics of Audiological Testing

A hearing test, also called an audiological evaluation or audiogram, measures how well you can hear sounds at different volumes and frequencies. When you visit an audiologist or hearing care professional, they use specialized equipment to gather information about your hearing ability. The test results provide a detailed picture of your ear function and any hearing loss that may be present.

During a typical hearing test, you sit in a soundproof booth wearing headphones. The audiologist plays tones at various pitches and volumes, and you raise your hand or press a button when you hear each sound. This part of the test is called pure-tone audiometry. The results show the quietest sounds you can hear at different frequencies, measured in hertz (Hz). Frequencies range from low sounds like thunder (around 60 Hz) to high sounds like birds chirping (around 8,000 Hz or higher).

The test also measures how loud sounds need to be for you to detect them. Sound volume is measured in decibels (dB). Normal conversation happens at about 60 dB, while a whisper is around 30 dB. Your results will show thresholds—the minimum volume at which you can hear each frequency. If your thresholds are higher than normal ranges, it indicates hearing loss at those particular frequencies.

Another common test is speech discrimination or word recognition testing. In this test, you listen to recorded words or sentences at a comfortable listening level and repeat what you hear. This measures how well you can understand speech even when you can hear it. Some people hear sounds but struggle to understand words clearly, which this test reveals.

Understanding these basic testing methods helps you make sense of the numbers and patterns on your audiogram. Your audiologist should explain which tests were performed during your appointment so you know what information your results contain.

Practical Takeaway: Before your hearing test, ask your audiologist which specific tests will be performed. This preparation helps you understand what your results mean when you review them together.

Reading Your Audiogram: The Visual Chart

An audiogram is a graph that displays your hearing test results visually. Learning to read this chart helps you understand your hearing ability at a glance. The audiogram uses a standard format with frequency (pitch) along the horizontal axis and hearing level (loudness) along the vertical axis.

The horizontal axis shows frequencies measured in hertz, typically ranging from 125 Hz on the left to 8,000 Hz on the right. Some audiograms extend to 16,000 Hz. Low frequencies represent deeper sounds, while high frequencies represent higher-pitched sounds. Speech sounds occupy the middle to higher frequency range, which is why hearing loss in these frequencies often affects conversation understanding.

The vertical axis shows hearing level in decibels, ranging from 0 dB at the top to 120 dB or lower at the bottom. The top of the chart (0 dB) represents normal hearing or the quietest sounds that people with typical hearing can detect. As you move down the chart, the numbers increase, representing louder volumes needed to hear sounds. A result plotted lower on the chart means you need louder sounds to hear that frequency.

Symbols on the audiogram mark your results. Typically, an "O" marks results from the right ear, and an "X" marks results from the left ear. These symbols are connected by lines to show your hearing across all frequencies tested. The pattern created by these points and lines shows your hearing profile—whether loss is gradual, sudden, at specific frequencies, or across the board.

A horizontal line near the top of the chart would indicate normal hearing across all frequencies. A downward sloping pattern, starting normal on the left and declining toward the right, is very common and suggests high-frequency hearing loss. A flat line lower on the chart indicates hearing loss that affects all frequencies similarly.

There's also usually a shaded area on the audiogram called the "speech banana" or speech range. This region highlights where most speech sounds fall. If your hearing thresholds drop below this area, it may affect your ability to understand conversation clearly.

Practical Takeaway: Ask your audiologist to show you specifically where your results fall compared to the normal range. Understanding if your hearing loss is mild, moderate, severe, or profound helps you grasp the overall picture of your hearing.

Decibel Levels and What They Mean

Decibels (dB) measure sound intensity or loudness. Understanding decibel levels helps you interpret your hearing test results and grasp what your hearing thresholds mean in real-world situations. The decibel scale is logarithmic, not linear, meaning that each 10 dB increase represents a doubling of sound intensity to human ears.

A hearing threshold of 0-20 dB is considered normal hearing. At 21-40 dB, you have mild hearing loss, meaning you have difficulty hearing whispered speech or soft sounds. At 41-55 dB, you have moderate hearing loss and may struggle to hear normal conversation without concentration. At 56-70 dB, you have moderately severe hearing loss and would have significant difficulty following conversation at normal levels. At 71-90 dB, you have severe hearing loss and may only hear shouted speech or very loud environmental sounds. Above 91 dB is profound hearing loss, where even very loud sounds may not be audible.

To understand these ranges in practical terms, consider common environmental sounds. A whisper measures about 20-30 dB. Normal conversation is around 50-60 dB. A busy restaurant might be 70-80 dB. A lawn mower is approximately 90 dB. A rock concert can reach 110-120 dB. Your audiogram shows at what decibel level you can hear sounds across different frequencies.

It's important to note that hearing thresholds can differ significantly between frequencies. You might have normal hearing at low frequencies but moderate hearing loss at high frequencies. This mixed pattern is common and affects how you perceive different types of sounds. For example, men's voices (which are lower frequency) might be relatively clear, while women's voices or children's voices (which are higher frequency) might be harder to hear.

Your hearing results might also show air conduction versus bone conduction thresholds. Air conduction tests measure how sound travels through your ear canal and middle ear. Bone conduction tests measure vibrations that travel directly through the skull bone to the inner ear. Comparing these two types of measurements helps determine whether hearing loss is conductive (involving the outer or middle ear), sensorineural (involving the inner ear or nerve), or mixed.

Practical Takeaway: Ask your audiologist to explain your specific decibel thresholds in terms of everyday sounds. This helps you understand how your hearing loss affects your daily communication and activities.

Frequency and Pitch: Understanding Different Sound Ranges

Frequency, measured in hertz (Hz), describes how high or low a sound is. Human hearing typically ranges from about 20 Hz (very low sounds) to 20,000 Hz (very high sounds), though this range decreases with age. Your hearing test likely covered frequencies from 125 Hz to 8,000 Hz, as this range is most relevant to speech and communication.

Low frequencies, typically 125-500 Hz, include sounds like bass in music, thunder, traffic rumble, and male voices. If you have hearing loss primarily in low frequencies, you might struggle hearing these deeper sounds while higher-pitched sounds remain clear. This pattern is less common but does occur, sometimes associated with specific inner ear conditions.

Mid frequencies, typically 500-2,000 Hz, include most vowel sounds in speech. Hearing in this range is crucial for understanding spoken words. Loss in this frequency range noticeably affects conversation comprehension. Sounds like "ah," "oh," and "oo" occupy this range, so damage here makes speech unclear even when you can hear that someone is talking.

High frequencies, typically 2,000-8,000 Hz, include consonant sounds and higher-pitched sounds. Consonants like "s," "sh," "f," "th," "t," and "p" are high-frequency sounds. Many high-frequency sounds carry important information for understanding speech. High-frequency hearing loss is very common, especially with age or noise exposure, and significantly affects your ability to understand speech clearly.

Your audiogram will show if your hearing loss is concentrated at specific frequencies or spread across