Audiometry Testing

This guide will equip you with the insights to understand hearing tests, occupational health and patient safety via audiograms and audiometry. We’ll explore this insightful realm of audiology concerning your auditory abilities while emphasizing how to safeguard them from any potential harm. Dive in for a captivating investigation into the remarkable world of hearing!

Key Takeaways

  • Audiograms are graphical representations of hearing test results that measure an individual’s degree of hearing loss, while audiometry is a process used to assess overall hearing ability.

  • Audiogram tests focus on measuring sound detection at different pitches and frequencies, while audiometry tests evaluate overall hearing using various tools.

  • An audiogram can be used to identify types of hearing loss and provide healthcare providers with the necessary information for diagnosis and treatment planning.

What is the Difference Between an Audiogram and Audiometry?

A man wearing headphones and looking at an audiogram

Hearing tests and audiometry are used to evaluate a person’s hearing capabilities, but they are not the same. Audiograms provide data regarding an individual’s degree of hearing loss in graphical form, while audiometry is performed through a variety of examinations such as pure tone testing and speech audiometry which measure the capacity for detecting different tones or sounds.

This type of auditory test utilizes earphones/loudspeakers that emit various degrees of sound waves into ear canal of one’s ears so results can ascertain their level and origin if there exists some kind of impairment as well as point out ways it might be able to heal or manage accordingly.

Is there a difference between Audiogram hearing tests and Audiometry tests?

Hearing tests using audiograms consist of measuring the softest sounds an individual can hear at varying pitches and frequencies. Audiometry assessments are more wide-ranging, gauging a person’s ability to recognize certain tones, notes or waves. Both types of examinations utilize devices such as headphones or earphones for sound delivery during testing.

Sometimes even a tuning fork is employed in order to evaluate bone conduction hearing levels. The type and number of tools used varies by test criteria set out by healthcare practitioners giving them the assessment.

Understanding Audiograms: The Basics

A woman wearing headphones and looking at an audiometer

An audiogram visually indicates an individual’s hearing capability by plotting out their ability to perceive sound at different frequencies and levels of loudness. This graph illustrates the quietest background noise that can be heard at a particular frequency, helping specialists detect types of hearing loss such as mixed/conductive/sensorineural impairments.

Components of an Audiogram

On an audiogram, frequency is plotted on the x-axis and measured in Hertz (Hz). Intensity of sound is represented by decibels (dB) on the y-axis. Specific symbols such as “O” which corresponds to right ear response or “X” standing for left ear are used to denote air conduction thresholds while bone conduction thresholds are also indicated.

Shading highlights normal pitch and loudness ranges of human speech and sounds with wide range of frequencies making it possible for healthcare providers to determine the type and severity of hearing loss experienced by any individual.

Frequency and Intensity

When it comes to hearing, frequency is a measurement of sound waves per unit time, relative to how we perceive pitch. As the frequency increases, so does our perception of higher pitches and vice versa for lower frequencies. Humans can usually pick up between 20Hz-20kHz for most speech. Intensity indicates loudness or power in comparison.

Audiograms demonstrate thresholds at diverse frequencies versus intensities on both vertical and horizontal axes respectively, enabling health providers to determine individual hearing levels effectively.

Types of Hearing Loss and Their Representation on Audiograms

03 A man wearing headphones and looking at an audiogram with different colors representing different degrees of hearing loss

Audiograms are a useful tool for pinpointing distinct hearing loss types such as sensorineural, conductive and mixed. These various kinds of deafness typically display unique patterns which can assist healthcare professionals in deciding on the most suitable management plan or treatment option to help address an individual’s hearing difficulties.

Sensorineural Hearing Loss

Hearing loss of a sensory nature occurs when sound passes normally through the middle and outer ear, but the inner part fails to work properly. This leads to similar outcomes in both air conduction hearing tests and bone conduction ones. It is brought on by harm inflicted on either the auditory nerve or inner parts of the ear, which may be irreversible depending on severity acoustic trauma.

Unilateral sensorineural impairment can present itself as muffled sounding noises, difficulties understanding speech, quick or progressive vanishing of hearing ability along with a sensation like an obstruction inside your ears at times.

For diagnosis one must have several components including physical exams & history taking alongside testing done pertaining to their level of hearing difficulty that would inform them of hearing level and suitable treatments options available such as wearing advanced tools (hearing aids), utilizing corticosteroids if needed and getting implants implemented ultimately if signs worsen drastically enough.

Conductive Hearing Loss

A man wearing headphones and looking at an audiogram with different symbols representing different types of hearing loss

Hearing loss of conductive type is caused when sound waves cannot pass through the the middle ear or outer ear to the inner ear. This happens due to a problem with either eardrum not vibrating adequately, which leads to higher bone conduction hearing levels than air conduction ones, as well as small bones within the middle part of your ears failing in transmitting sounds properly.

Typical indications for this kind of impairment include partial/complete difficulty understanding speech that may appear muffled. And problems catching up on conversations during noisy surroundings like concerts and public spaces, resulting even into sudden deafness accompanied by distant noises sensation sometimes.

Audiograms show an ‘air-bone gap’ between both thresholds demonstrating issues with sound conducted via external or internal parts related to hearing structures such as the ears & middle ears.

Mixed Hearing Loss

Hearing loss can take two forms. Conductive and unilateral sensorineural hearing loss. Mixed hearing loss is a combination of these components, caused by damage to the external or middle ear combined with inner ear or auditory nerve problems such as genetic issues, illness, drugs, infections, head trauma, etc.

The diagnosis involves elevated air conduction and bone conduction thresholds observed in one ear during an audiogram, both aspects being affected. Those suffering from mixed hearing will struggle more than normal ears when it comes to faint sounds and speech comprehension, especially in noisy settings.

Audiogram Interpretation: Identifying Patterns and Etiologies

An audiogram chart displaying the results of a hearing test for conductive hearing loss.

Hearing loss can often be determined by analyzing the patterns and configurations from an audiogram. The factors such as sound leakage, inadequate ear isolation, false positives/negatives or functional non-organic hearing losses can make interpreting these results challenging for healthcare providers.

To ensure optimal treatment plans and outcomes for patient’s hear health, it is essential to understand the implications of an individual’s audiogram configuration and pattern so that proper management strategies are in place. Healthcare professionals have a crucial role helping patients comprehend their own test readings in order to provide education about what causes their condition as well as its severity levels with regard to acoustic stimulation through sounds received via each respective ear.

Common Challenges and Interfering Factors in Audiogram Interpretation


The accuracy of the hearing test results and audiogram interpretation can be impacted by sound leakage, inadequate ear isolation, as well as false positive or negative readings. When there is noise entering the testing environment from an outside source, it may be difficult to attain reliable hearing thresholds leading to unreliable outcomes. Poorly isolated ears during an audiological exam also has a bearing on gathering proper data which could lead to an incorrect diagnosis regarding any kind of existing auditory impairment. Including not receiving enough benefit from using external listening aids for those already suffering with some form of loss in their ability to hear clearly. False positives and negatives when interpreting audiograms raise questions about precision regarding present levels of hearing that require analysis for diagnostic confirmation purposes.

Why is Audiometry Important in Occupational Health and Safety

A woman wearing headphones in an audiometry clinic

Occupational tests and assessments are used to identify any potential hearing issues that could be present in the workplace. Such examinations usually include audiometric testing, along with taking readings of a person’s pure-tone air conduction thresholds for their left and right ears. Baseline tests will typically commence the process by measuring an individual’s auditory capabilities while subsequent measurements can then detect changes over time when compared to these original results.

Audiometry or audiograms may also feature as part of this evaluation procedure, which assists professionals in seeking out potential problems related to somebody’s hearing abilities.

Audiometric testing is a significant part of occupational health in order to identify noise-induced hearing loss at an early stage and thereby enable employers to take proactive steps. It has plenty of advantages, such as recognizing the damage earlier, preventing destruction, meeting safety regulations, improved productivity and higher worker satisfaction level.

Legally speaking companies should offer free audiometry for eligible workers with certified specialists conducting it. While also collecting thorough reports about each test taken, they are then obligated to keep up until 10 years after their last examination date or when the employee’s tenure ends, whichever comes first.

Occupational Audiometry: Importance and Guidelines

A man wearing headphones for an audiometry test

Occupational audiometry protocols are established to detect and prevent noise-induced hearing loss in the work environment. Necessary audiometric checks include pure tone air conduction tests for employees exposed to sound of more than 85 dBA and annual calibration testing of all associated audiometers, done by Certified Occupational Hearing Conservationists (COHCs).

These measures facilitate identification and control of any potential problems related to exposure to high levels of noise, protecting workers from permanent damage caused by it while enhancing overall security at the job place.

Are there specific guidelines in Alberta Canada

A-man-wearing-headphones-in front of an ear doctor

In Alberta, employers must provide audiometric testing for workers exposed to noise levels of over 85 decibels during an 8-hour shift. To do this correctly, they need someone with a certificate in audiometric testing who is recognized by the Director of Medical Services at Alberta Labour.

This ensures protection against any potential hearing loss that can result from prolonged exposure to a loud noise or noises. It includes decreased performance and increases risk of accidents as well as reduced job satisfaction. By adhering to these guidelines set out, organizations are ensuring their employees’ health while simultaneously remaining compliant with safety regulations imposed by Alberta Labour.

Patient Safety, Education, and Audiogram Results

Occupational Hearing Tests

When it comes to patient safety and education, healthcare professionals have the vital task of explaining audiogram results. It is crucial for patients to recognize what figures and forms are presented on their audiograms, as they can demonstrate the origin and intensity of hearing loss. Comprehending these outcomes enables people with auditory issues an opportunity to make informed decisions related to their listening health care. To be aware of any associated risks or needed Examinations or treatments. This comprehensive understanding not only promotes improved patient safety but also optimizes total result relating overall hearing wellness conditions too.

Hearing Aids and Cochlear Implants: When Are They Necessary?

Patient safety during audiometry

For people with serious hearing impairment, the use of hearing aids and other assistive devices such as cochlear implants may be recommended. This includes sensorineural, conductive or mixed types of losses which can all benefit from these solutions to improve their quality of life.

Hearing aid technology allows individuals to identify sound including speech and environmental noises more effectively than before while those suffering severe-to-deep damage might need a cochlear implant for best results in terms of understanding spoken words clearly again.

High Risk Jobs or Careers Where Audiogram Assessments are Necessary

Hearing Aids and Cochlear Implants Necessary for Occupational Health

For people with serious hearing impairment, the use of hearing aids and other assistive devices such as cochlear implants may be recommended. This includes sensorineural, conductive or mixed types of losses which can all benefit from these solutions to improve their quality of life. Hearing aid technology allows individuals to identify sound including speech and environmental noises more effectively than before while those suffering severe-to-deep damage might need a cochlear implant for best results in terms of understanding spoken words clearly again.

High Risk Jobs or Careers where Audiogram assessments are necessary


Hearing is important to protect workers in high-risk jobs, such as those working in construction, manufacturing, aviation and music industries. Workers are often exposed to loud sounds that can cause gradual hearing loss over time. That’s why regular audiogram assessments are essential, they provide a means of monitoring their auditory health status while catching any early signs before harm occurs.

By taking this proactive approach to protecting their hearing now by undergoing assessments regularly helps ensure long-term wellness down the road for these individuals who work with potentially hazardous sound levels on a daily basis.

Things to consider when selecting a Occupational Health Clinic for your hearing assessments

Employee health assessment services in Canada

When it comes to picking an occupational health clinic for hearing evaluations, key elements include the experience of staff, whether they are accredited and have access to quality equipment. Look at factors such as its position in relation to you or your company’s facilities, if there is easy access to appointments when needed, follow up support post-assessment and programs that help promote hearing conservation practices among employees.

Besides these basic criteria, pay attention also to any extra services offered by the clinic (audiometric testing included) so you can find a place which will best suit all specific requirements related with providing appropriate tests for detecting impairment of workers’ auditory skills while adhering strictly to applicable regulations regarding this matter.

Frequently Asked Questions about Pre Employment Audiogram Tests

Employment audiogram test

A pre-employment hearing test is a measure used to detect any potential work-related hearing loss prior to an individual commencing their new job. The purpose of this type of assessment is for employers to ensure that the prospective employee has suitable auditory ability in order for them safely and accurately complete duties associated with certain occupations such as pilots, police officers, firefighters or clinical audiologists. An audiologist conducts these tests by measuring someone’s ability at detecting various sounds on an audiogram, which then provides a reference point should future screenings be needed.

What can i expect when getting a Employment Hearing test?

Pre-employment hearing test

During an employment hearing test, a soundproof room is used to measure your level of auditory ability and identify any potential issues. This evaluation process consists of tones played at different intensities that are charted on the audiogram in order to see what frequency range you can hear as well as its loudness. An audiologist or technician administers these tests and provides help along the way, so it’s important for participants to understand exactly what will occur during their exam, this way they ensure reliable results every time. Hearing preparation is key when it comes to successful testing outcomes!

Unlimited Medical Centres Edmonton Offers Audiometry, when should my company book for their employees?

At Unlimited Medical Centres in Edmonton, it is essential for companies to book audiometric assessments based on local industry regulations and any individual risk factors. According to Alberta’s legislation, employers must provide audiological testing for personnel subjected daily to noise levels above 85 decibels over the course of an 8-hour shift.

Scheduling regular tests through our service at or via phone helps guarantee that your workforce remains secure while staying compliant with health and safety standards in Canada’s Occupational Code.

With adherence to these necessary guidelines, you can protect the well-being of those under your employ – something we consider extremely important here at Unlimited Medical Centre!


By understanding different types of hearing loss, interpreting audiogram results and following industry guidelines, we can improve our hearing health. This guide unlocks the secrets to audiometry and explains its importance in occupational safety, helping us make informed decisions for ourselves when it comes to safeguarding our ears. Let’s continue prioritizing proper sound protection so that we can maintain a healthy working atmosphere!

Frequently Asked Questions

A hearing test which produces a graph showing how well you can pick up sounds in terms of volume and frequency is known as an audiogram. This assessment helps assess your ability to hear different levels and types of sound, thereby giving insight into any hearing issues.

A normal hearing is required to pass an audiogram. If a person has any degree of auditory loss, whether it is mild or severe, the results will appear on the test and can be documented accordingly. Thus, having no hearing loss at all is necessary for one’s success in passing this exam.

An audiometry test is a hearing assessment to evaluate one’s sound sensitivity by measuring the intensity and speed of audio wave vibrations. It can detect any degree of sensorineural or conductive hearing loss, as well as indicate preliminary signs for noise-induced impairments in regards to listening ability.

An audiogram is a tool used to analyze the degree of hearing loss an individual has, whether it be sensorineural, conductive or mixed. Such evaluations enable professionals to gauge and identify any issues.

Occupational health and safety teams rely on Audiometry to detect noise-induced hearing loss early, allowing them the opportunity to take preventive action. Such testing is critical for identifying issues with hearing in a timely fashion before permanent damage sets in.

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Comprehensive Services

  • Post-offer, pre-placement, and periodic medical assessments
  • Designated medical surveillance
  • Audiometric testing & hearing conservation programs
  • Pulmonary function testing
  • Drivers Medical
  • Silica screening (Chest X-Ray, and Spirometry)
  • Wellness initiatives & biometric screening
  • TB Testing
  • Workplace immunization programs


We provide turn-key solutions for your employees having x-ray location on 2nd floor and laboratory services across the street and an acessible location with easy access from all main artery roads (Anthony Henday, Calgary Trail, Whitemud) as well as a Century Park LRT/Bus Terminal.