The world we live in is a noisy one, filled with distractions and disruptions that can make it difficult to focus and relax. To combat this, many people turn to noise cancelling earbuds, which use advanced technology to block out background noise and create a more peaceful listening experience. But while these earbuds may be a blessing for some, they can also potentially pose a risk to your ear health. In this article, we’ll explore the potential risks associated with using noise cancelling earbuds, and examine the science behind these risks.
How Noise Cancelling Earbuds Work
To understand the potential risks associated with noise cancelling earbuds, it’s first important to understand how they work. Noise cancelling earbuds use a technology called Active Noise Control (ANC) to block out background noise. This technology involves a combination of microphones, amplifiers, and speakers that work together to produce a “negative” sound wave that cancels out ambient noise.
Here’s a step-by-step explanation of how ANC works:
- Microphones detect ambient noise: The microphones in noise cancelling earbuds detect the ambient noise around you, such as the sound of a plane engine or a busy street.
- Amplifier processes the signal: The microphone sends the detected noise to an amplifier, which processes the signal and sends it to the earbuds’ speakers.
- Speakers produce “negative” sound wave: The earbuds’ speakers produce a “negative” sound wave that is the exact opposite of the ambient noise.
- Noise is cancelled out: The “negative” sound wave cancels out the ambient noise, leaving you with a more peaceful listening experience.
The Potential Risks of Noise Cancelling Earbuds
While noise cancelling earbuds can be a blessing for many people, they can also potentially pose a risk to your ear health.
Increased Risk of Ear Infections
One of the biggest risks associated with using noise cancelling earbuds is the increased risk of ear infections. This is because earbuds can push earwax deeper into the ear canal, which can cause blockages and create a warm, moist environment that’s perfect for bacteria to grow.
In addition, the ANC technology in noise cancelling earbuds can sometimes create a pressure difference in the ear canal, which can cause discomfort and potentially even lead to eardrum rupture.
Damage to the Eardrum
The eardrum, also known as the tympanic membrane, is a thin membrane that separates the ear canal from the middle ear. When sound waves reach the eardrum, they cause it to vibrate, which in turn causes the fluid in the middle ear to vibrate, resulting in sound being transmitted to the inner ear.
Noise cancelling earbuds can potentially damage the eardrum in a number of ways. For example, the increased pressure caused by the ANC technology can cause the eardrum to rupture, leading to sharp pain and potentially even hearing loss.
Impact on Hearing Health
Another potential risk associated with using noise cancelling earbuds is the impact they can have on your hearing health. When you wear earbuds, you’re essentially creating a “soundproof” environment that can cause sound waves to become amplified.
This can lead to a number of problems, including:
- Nielsen-induced hearing loss: Listening to music at high volumes through earbuds can cause permanent damage to the hair cells in the inner ear, leading to hearing loss.
- Tinnitus: Prolonged exposure to loud sounds can also cause tinnitus, a condition characterized by a ringing or other types of noise in the ears.
The Effects of Noise Cancelling Earbuds on Hearing Health
The impact of noise cancelling earbuds on hearing health is still a relatively new area of research, and more studies are needed to fully understand the risks. However, a study published in the Journal of the American Osteopathic Association found that wearing earbuds for just 10 minutes a day can cause hearing loss after just 10 years.
The study’s lead author, Dr. Frank R. Lin, said: “We found that the amount of pressure on the eardrum was consistent with the noise exposure guidelines, but the sound energy produced was actually higher than what was predicted by those guidelines. This suggests that there may be additional risks associated with using earbuds that aren’t being captured by current noise exposure guidelines.”
Protecting Your Hearing Health
While the risks associated with using noise cancelling earbuds are real, there are steps you can take to protect your hearing health. Here are some tips:
- Use the right earbuds: Choose earbuds that fit comfortably and don’t cause discomfort or pressure on the ears.
- Keep the volume low: Avoid listening to music at high volumes through earbuds.
- Take breaks: Take breaks from wearing earbuds throughout the day to give your ears a chance to rest.
- Get regular hearing tests: Get regular hearing tests to monitor your hearing health and catch any potential problems early.
WHO’s Recommendation for Safe Listening
The World Health Organization (WHO) recommends that you follow the 60/60 rule when listening to music through earbuds:
- Listen to music at volumes no higher than 60% of the maximum volume.
- Take regular breaks every 60 minutes to give your ears a chance to rest.
By following these tips, you can help to minimize the risks associated with using noise cancelling earbuds and protect your hearing health.
Additional Considerations
In addition to the potential risks associated with noise cancelling earbuds, there are also some additional considerations to keep in mind.
- Sound quality: While noise cancelling earbuds can provide a peaceful listening experience, the sound quality may be affected by the ANC technology.
- Cost: Noise cancelling earbuds can be expensive, with prices ranging from $50 to over $500.
- Convenience: Noise cancelling earbuds can be a convenient option for people who lead busy lifestyles or work in noisy environments.
Conclusion
While noise cancelling earbuds can provide a peaceful listening experience, they can also potentially pose a risk to your ear health. By understanding the potential risks and taking steps to protect your hearing health, you can enjoy the benefits of noise cancelling earbuds while minimizing the risks.
What are noise-cancelling earbuds and how do they work?
Noise-cancelling earbuds are a type of earbuds that can reduce unwanted ambient sounds. They work by using one of two types of noise cancellation technology, active noise control or adaptive noise control. Active noise control is more common and uses a microphone to capture the sounds around you and then produces an ‘anti-noise’ that cancels out the sound you don’t want to hear.
Noise-cancelling earbuds do this real-time using microelectromechanical systems (MEMS) and analog-to-digital converters. These systems process sound signals and can detect the unwanted ambient noise. The noise signal is then inverted and amplified to produce the ‘anti-noise’, effectively cancelling out the unwanted sound.
Can using noise-cancelling earbuds harm my hearing?
Most studies show that wearing noise-cancelling earbuds at reasonable levels will not harm your hearing. Noise-cancelling earbuds usually just make the sound around you less loud. However, like all earbuds, they can pose a hearing risk if the volume is turned up too high. To put this into perspective, if you’re used to playing music at high volumes to overpower background noise without noise-cancelling earbuds, switching to noise-cancelling earbuds and turning the volume down might not cause harm to your hearing.
Listening to music through noise-cancelling earbuds with the volume turned low actually lowers your exposure to overall loud sounds. However, prolonged exposure to even moderately loud sounds can damage hearing over the long term. Therefore, at any volume level, prolonged usage could pose a risk of hearing damage, which is typical of other earbuds as well.
Will noise-cancelling earbuds increase my risk of earwax buildup?
Using noise-cancelling earbuds might possibly cause an increased risk of an earwax buildup. The earbuds block the entrance to the ear canal and earwax is pushed deeper into the ear canal. This might form an earwax blockage that could pose hearing problems, ear pain or produce ringing in the ears.
Using ear tips of the correct size can help. You can opt for smaller sizes to prevent pushing earwax deeper into your ears, but there are risks to earbuds not fitting snug in place. Some consider earwax blockage to be an inherent drawback of earbuds and using them exposes users to a risk. On the other hand, using earbuds without letting them go deep within the inner ear canal could significantly reduce this risk.
Can noise-cancelling earbuds make me feel disoriented or cause dizziness?
Yes, wearing noise-cancelling earbuds might cause some people to feel disoriented or dizzy. This phenomenon occurs particularly in individuals who are not used to the environment without ambient noise and noises produced by their body. The noise produced by the body, such as walking, footsteps or heartbeats and external noise produces balance and awareness.
In environments with heavy background noise, using noise-cancelling earbuds might raise concerns for preventing accidents. With the absence of external noise, there is a bigger risk of bumping into others or objects nearby. Individuals who experience these effects usually stop feeling them over time as the human body adapts to the environment.
Should I be concerned about ear pressure with noise-cancelling earbuds?
It’s possible to feel pressure with noise-cancelling earbuds, especially those who experience ear or sinus issues such as Eustachian tube dysfunction. When you are on an aircraft or where air pressure changes rapidly, the change in pressure may not be evenly distributed inside the earbuds. This pressure imbalance may become uncomfortable or even painful.
Users who experience such discomfort are often relieved by yawning, chewing or using nasal sprays before putting on their earbuds. Some also experience ear pressure if the earbuds’ seal within the ear canal is not correct or if they are worn with a hat, goggles, etc. to wear over or near the ears.
Are there health benefits to using noise-cancelling earbuds?
Yes, there are several benefits to using noise-cancelling earbuds. They can help in reducing fatigue during flights as the ambient noise around you is largely reduced. Noise-cancelling earbuds are even more efficient when operating with a high volume at lower levels of noise and hence protecting your hearing. Noise reduction also leads to relaxation and this leads to the general overall health factor.
Besides the comfort of reduced annoyance and ear fatigue, ambient noise also reduces the strain to process sounds by the brain. You can more easily maintain your concentration on the tasks that need it most.
Are noise-cancelling earbuds safe for children?
Noise-cancelling earbuds are not recommended for young children. First and foremost, these earbuds are not designed to be safe in terms of ear size. Young children’s ear canals are much smaller and as earbuds block ear canals this can either result in a blockage or potentially push earwax in further damaging their hearing.
Moreover, exposure to even medium levels of volume is more damaging to little children as their hearing is more immature. Since their hearing is even more sensitive to damage, reducing overall sound levels can be effective but exposure for prolonged hours would affect them greatly.