An Army hearing test produces two main outputs: a standard audiogram showing how well you hear at different frequencies, and a hearing profile designation (H-1 through H-4) that translates those thresholds into a readiness classification the Army uses for duty assignments. If you’re staring at a test printout or a record in the military’s hearing conservation database, the numbers represent your hearing thresholds in decibels at specific frequencies, with lower numbers meaning better hearing. The profile letter and number that follow tell you and your command whether your hearing meets the standard for your military occupational specialty.
What the Audiogram Actually Shows
The audiogram is the foundation of every Army hearing evaluation. It charts your hearing sensitivity across a range of frequencies, typically from 500 Hz (a low hum) up through 6,000 or 8,000 Hz (a high-pitched tone). Each ear is tested separately. The result at each frequency is your threshold, the quietest sound you can detect at that pitch, measured in decibels (dB). A threshold of 0 to 25 dB is considered clinically normal. The further a number climbs above 25, the more hearing loss you have at that frequency.
On a printed audiogram, the vertical axis runs from quiet at the top (sometimes -10 dB) to loud at the bottom (around 110 dB), and the horizontal axis runs from low-pitched sounds on the left to high-pitched sounds on the right. Your right ear is usually marked with red circles and your left with blue Xs. A flat line near the top means good hearing across the board. A line that dips sharply in the middle or high frequencies usually signals noise damage.
The system of record for surveillance audiometry in the Department of Defense is the Defense Occupational and Environmental Health Readiness System-Hearing Conservation, or DOEHRS-HC. This desktop application and database connects to a computer-controlled audiometer, stores your results, and automatically flags anything that needs further evaluation.1Oxford Academic (Military Medicine). Increasing Hearing Readiness Using Boothless Audiometry Every active-duty soldier is supposed to get a hearing test recorded in that system at least once every 12 months.
The H-Profile System
The Army converts your raw audiogram into a hearing profile using the “H” designator, part of the broader PULHES physical profile system (which also rates physical capacity, upper extremities, lower extremities, eyes, and psychiatric fitness). There are four hearing profile levels:
- H-1: Hearing within normal limits. You meet the standard for any military occupational specialty, including those with hearing-critical duties like infantry, communications, and intelligence roles.
- H-2: Mild hearing loss at certain frequencies. You can still serve in most roles, though some hearing-critical positions may be restricted depending on the specific thresholds.
- H-3: Moderate hearing loss that limits assignment to hearing-critical duties. An H-3 profile triggers a clinical audiology referral and may lead to duty restrictions or reassignment.
- H-4: Severe hearing loss. This profile typically means you do not meet retention standards without a medical waiver, and it raises questions about whether you can safely perform most military tasks.
The profile is assigned based on your thresholds at specific frequencies in each ear. The exact cutoff thresholds that separate H-1 from H-2, or H-3 from H-4, are defined in Army Regulation 40-501 and have been updated over time to reflect newer evidence about which levels of hearing loss actually impair job performance. Research into military auditory fitness-for-duty has shown that combining audiometric thresholds with speech recognition scores provides a better method for identifying soldiers who will struggle with hearing-critical tasks than relying on the audiogram alone.2Ear and Hearing. Developing an Evidence-Based Military Auditory Fitness-for-Duty Standard Based on the 80-Word Modified Rhyme Test
An analysis of the Army-wide hearing conservation database found that among infantrymen, roughly 87% to 90% maintained an H-1 profile across a decade of data, meaning about one in ten had enough hearing damage to fall into H-2 or worse.3Noise and Health. Analysis of army-wide hearing conservation database for hearing profiles related to crew-served and individual weapon systems That proportion stayed remarkably stable even as compliance with annual testing improved dramatically, which suggests the noise exposure itself was the persistent problem rather than a testing gap.
Significant Threshold Shift and What Triggers a Referral
Your individual audiogram matters, but the Army is equally interested in how your hearing changes over time. That is where the significant threshold shift, or STS, comes in. In the DOEHRS-HC system, an STS is defined as an average change of 10 dB or more at 2,000, 3,000, and 4,000 Hz compared to your reference audiogram (usually your baseline test from when you first entered service or enrolled in the hearing conservation program).1Oxford Academic (Military Medicine). Increasing Hearing Readiness Using Boothless Audiometry This threshold of 10 dB across those three frequencies is also the general standard used in occupational and research settings for flagging meaningful change.4PubMed Central. Temporary and Permanent Noise-induced Threshold Shifts: A Review of Basic and Clinical Observations
If DOEHRS-HC detects an STS on your annual test, you are flagged for a referral to an audiologist. Other common referral triggers include reporting bothersome tinnitus and having asymmetric hearing between your ears that requires specialized testing to get accurate thresholds.1Oxford Academic (Military Medicine). Increasing Hearing Readiness Using Boothless Audiometry Once flagged, Army policy requires two follow-up audiometric tests within 60 days to confirm whether the shift is real or was a temporary blip caused by recent noise exposure, earwax, or testing conditions.5The Journal of the Acoustical Society of America. Significant threshold shifts and follow-up audiograms in the Army Hearing Conservation Program
A separate, more aggressive threshold is used in combat-injury contexts. For soldiers who sustained blast or acoustic trauma during deployment, a significant threshold shift is defined as a 30 dB or greater change in the sum of hearing thresholds at 2,000, 3,000, and 4,000 Hz in either ear, comparing the post-injury audiogram to the pre-injury baseline.6Ear and Hearing. Pre-Existing Audiometric Hearing Loss is a Predictor of Significant Threshold Shift Following Injury During Combat Deployment That higher bar exists because the comparison is between an injury event and a recent pre-deployment test, rather than between annual screenings where smaller drifts accumulate.
Hearing Readiness Categories
The hearing profile (H-1 through H-4) describes your hearing ability. The Hearing Readiness Category (HRC) describes whether your hearing paperwork is up to date and whether you need further clinical attention. These are different things, and confusing the two is common.
There are four HRC levels. HRC 1 means your audiogram is current and shows no issues. HRC 2 means your hearing is normal but you are slightly overdue for some component. HRC 3 means you have been flagged for a clinical referral but it has been completed and your profile has been updated. HRC 4 is the one that gets commanders’ attention: it means either you have not had a hearing test within the past 12 months or you were flagged for a referral that remains incomplete.1Oxford Academic (Military Medicine). Increasing Hearing Readiness Using Boothless Audiometry An HRC 4 designation counts against your unit’s medical readiness statistics, which is why you will hear about it from your chain of command even if your hearing feels fine.
A soldier can be H-1 (perfect hearing) and HRC 4 (not medically ready) simply because the annual test was missed. Conversely, a soldier can be H-3 (moderate loss) but HRC 1 if the loss has been evaluated, profiled, and the clinical referral is complete. The readiness category tracks administrative compliance as much as it tracks hearing health.
What Noise-Induced Hearing Loss Looks Like on an Audiogram
If your Army audiogram shows a dip in the high-frequency range, you are likely looking at noise-induced hearing loss, which is by far the most common type of hearing damage in the military. The classic textbook pattern is a “notch” at 4,000 Hz, meaning your hearing drops sharply at that frequency and recovers somewhat at 6,000 or 8,000 Hz. But the reality is messier than that. Research using deep neural networks trained on large audiometric datasets has found that military noise-induced hearing loss sometimes shows a notch at 4,000 Hz, sometimes shows a notch at a different frequency entirely, and sometimes just presents as a progressive loss that worsens with increasing frequency without any clear dip-and-recovery pattern.7PubMed Central. Diagnosing Noise-Induced Hearing Loss Sustained During Military Service Using Deep Neural Networks
This matters when you are trying to interpret your own results. If you see that your thresholds are normal at 500 Hz and 1,000 Hz but climb to 40 or 50 dB at 3,000 or 4,000 Hz, that is consistent with noise damage even if there is no neat notch shape. The frequencies where speech clarity lives, particularly the consonant sounds that distinguish “bat” from “pat” or “thin” from “fin,” fall right in the range where noise damage tends to hit hardest. That is why soldiers with moderate high-frequency loss often say they can hear people talking but cannot understand what is being said, especially in noisy environments.
Extended high-frequency audiometry, which tests above the standard 8,000 Hz range out to 18,000 Hz, has revealed that some soldiers show hearing deficits in those very high frequencies even when their conventional audiogram looks entirely normal. One study of battlefield acoustic trauma found that a quarter of steroid-treated patients had normal results on a standard audiogram but demonstrated measurable losses on extended testing.8Taylor & Francis Online / International Journal of Audiology. Extended high-frequency audiometry in battlefield acoustic trauma: diagnostic value and steroid treatment outcomes Extended high-frequency testing is not part of the standard Army screening, but it may be ordered during clinical evaluation after a blast exposure or when symptoms do not match the conventional results.
Functional Hearing Tests Beyond the Audiogram
A standard audiogram tells you how quiet a sound you can hear in a silent booth. It does not tell you much about how well you can understand speech in a noisy environment, which is what actually matters on the battlefield or in a vehicle crew. The Army recognized this gap decades ago and adopted a speech-in-noise test called the SPRINT (Speech Reception in Noise Test), which has been the standard tool for assessing auditory fitness-for-duty among soldiers with hearing loss since 1992.9Hearing Research. Development and validation of the Speech Reception in Noise (SPRINT) Test
If your audiogram results place you in H-2 or worse and your job requires good hearing, you may be given a speech-in-noise evaluation. The idea is to test whether your real-world listening ability is better or worse than the audiogram alone would predict. Some people with moderate threshold shifts still perform well on speech-in-noise tasks, while others with smaller shifts struggle. Newer evidence-based fitness standards combine the audiogram with speech recognition scores to make a more accurate call about whether a soldier can safely perform hearing-critical duties.2Ear and Hearing. Developing an Evidence-Based Military Auditory Fitness-for-Duty Standard Based on the 80-Word Modified Rhyme Test If your profile is H-3 or H-4 but your speech-in-noise scores are strong, that information becomes part of the clinical picture when decisions about retention or reclassification are made.
The Tinnitus Screening
Tinnitus, a ringing, buzzing, or humming in the ears, is screened annually alongside the audiogram. During a hearing conservation visit, you will be asked a question along the lines of: “During the past month, how much have you been bothered by noises in your head or ears, such as ringing, buzzing, crickets, humming, or a tone?”10PubMed. Improving Sensitivity of Tinnitus Screening in Hearing Conservation Programs If you answer yes, you may be asked follow-up questions and potentially referred for a clinical evaluation.
Tinnitus does not change your H-profile directly since profiles are based on audiometric thresholds, not on subjective symptoms. But bothersome tinnitus is an independent trigger for referral to audiology in the DOEHRS-HC system.1Oxford Academic (Military Medicine). Increasing Hearing Readiness Using Boothless Audiometry Research on service members with tinnitus has explored functional consequences including difficulty concentrating, sleep disruption, and effects on mood, with participants completing both auditory and cognitive testing alongside tinnitus questionnaires.11PubMed. Functional Consequences of Tinnitus in Military Service Members
There is an ongoing push to improve how the Army screens for tinnitus. Current research suggests that the single screening question used at annual evaluations may not be sensitive enough, and recommendations from the VA/DoD Tinnitus Working Group call for a more structured screening approach that could reduce the rate of soldiers developing bothersome tinnitus by catching it earlier.12PubMed. Incidence of Self-Reported Bothersome Tinnitus Versus Tinnitus Diagnosis Among U.S. Army Soldiers
How Your Army Hearing Record Affects VA Disability Claims
Here is where the administrative details of your hearing test record have consequences that extend well past your active-duty service. When you file a hearing loss disability claim with the VA, the strength of that claim depends heavily on whether you have documented hearing changes in the military system. A large-scale analysis found that soldiers who had at least one test in the DOEHRS-HC system were actually less likely to have a hearing loss claim granted by the VA, likely because those with documented normal hearing throughout service had less basis for a noise-exposure claim. But within the group that did have DOEHRS-HC records, those with at least one documented threshold shift were more than twice as likely to have a claim approved, and those with a clinical hearing loss diagnosis on active duty were more than three times as likely.13PubMed. Hearing testing in the U.S. Department of Defense: Potential impact on Veterans Affairs hearing loss disability awards
This has a practical implication that matters right now, even if you are years from separating. Every annual hearing test in DOEHRS-HC builds a longitudinal record. If your hearing is deteriorating due to occupational noise exposure, that record shows the progression. If you skip annual tests or blow off a referral (landing in HRC 4), you are creating a gap in documentation that may weaken a future claim. The soldiers who benefit most from the system are the ones who take every scheduled test, complete every referral, and ensure their records accurately reflect any symptoms including tinnitus.
Hearing Protection and What “Active Mode” Means on Your Test
If you have been told your hearing profile is deteriorating and you are worried about what comes next, it is worth understanding what current tactical hearing protection can actually do. Modern level-dependent hearing protectors, the kind issued for combat operations, have two modes. In passive mode with the electronics turned off, they block sound the way any earplug or earmuff would, and their effectiveness depends on the attenuation rating. In active “talk-through” or surround mode, these devices amplify quiet sounds like speech while still clamping down on loud impulse noise from weapons.
Testing of high-end tactical headsets in military noise conditions found that the active mode produced speech intelligibility scores that often exceeded unprotected listening, meaning soldiers could understand speech better wearing the devices than with nothing in their ears at all. Soldiers with the most impaired hearing benefited the most from the active mode.14The Journal of the Acoustical Society of America. Speech intelligibility in military noise for normal-hearing and hearing-impaired listeners using level-dependent tactical hearing protectors This does not reverse hearing damage or change your profile, but it is relevant context when you are reading a less-than-perfect audiogram and wondering whether it means you cannot function in the field. The technology available now means that a soldier with an H-2 profile using properly fitted active hearing protection may perform as well as or better than an H-1 soldier wearing nothing, at least for speech comprehension tasks.
Reading Your Results Yourself
When you pull up your audiogram in DOEHRS-HC or get a paper copy, here is what to look at in order of importance. First, check your thresholds at 2,000, 3,000, and 4,000 Hz in each ear. These are the frequencies the Army uses for STS calculations, profile assignments, and fitness-for-duty decisions. If those numbers are all at 25 dB or below, you are in solid shape for an H-1 profile. If any of them creep above 25 dB, you are entering the range where your profile may shift and where the system starts paying closer attention to trends.
Second, compare your current test to your reference audiogram. You are looking for whether the average change at 2,000, 3,000, and 4,000 Hz reaches 10 dB in either ear. You can estimate this yourself by averaging the difference at each of those three frequencies. If that average hits 10 or more, you should expect the system to flag it as an STS, even if you feel like your hearing has not changed.
Third, look at the overall shape. If your low-frequency thresholds (500 and 1,000 Hz) are normal but your high frequencies are elevated, that is the typical noise-exposure pattern. If all frequencies are elevated roughly equally, that is more consistent with age-related loss or a conductive problem (something blocking sound mechanically, like fluid or earwax). If one ear is dramatically worse than the other, the asymmetry itself is a referral trigger.
Finally, check your HRC. If it says 4, you have an incomplete action somewhere, either a missed test or an outstanding referral. Resolving that is the fastest way to get back to full readiness status, and the fix might be as simple as scheduling a follow-up appointment that slipped through the cracks. Your unit’s hearing conservation officer or the audiology clinic can tell you exactly what is outstanding.