Is Noise Cancelling Bad For Your Ears?

Noise cancelling technology has transformed how we experience sound, reducing background noise, and enhancing audio clarity. However, there are many questions surrounding whether this technology is detrimental to your ears, particularly when it comes to noise-cancelling headphones. In this article, we discuss the effects of noise cancellation on hearing health, the benefits of using noise cancellation, and how to use noise cancelling technology safely.

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What is noise cancelling technology?

There are several types of noise cancelling technology available, with the most prominent being active noise cancellation (ANC). This works by detecting external noise and generating an inverse sound wave to cancel it out. ANC is widely used in noise cancelling headphones, communication devices, and industrial applications to create a quieter environment and improve sound clarity for the user.

Passive noise cancellation is another type of noise cancellation. This relies on physical barriers like earcup padding on headphones to block sound.

At bhi Ltd, we use our own unique form of noise cancelling in our speakers and modules, DSP noise cancelling. DSP noise-cancelling technology uses advanced Digital Signal Processing (DSP) to eliminate unwanted background noise from speech signals, ensuring clearer and more intelligible audio. By continuously analysing incoming signals, the DSP system distinguishes speech from noise and interference, automatically attenuating noise without requiring manual adjustments. This adaptive technology effectively removes noise from transmitting sources, such as road or engine noise, and transmission interference, like poor reception or weather conditions.

Can noise cancelling damage your hearing?

Currently, there are no research or scientific articles that show that properly functioning noise cancelling technology poses a risk to hearing health. The anti-noise waves generated by noise cancelling devices are precisely calculated and controlled, operating at safe sound pressure levels.

The physics behind noise cancellation reduces the total energy reaching your eardrums. When the anti-noise waves meet the incoming noise waves, they cancel each other out through destructive interference. This process reduces the overall sound pressure level in your ear canal, potentially protecting your hearing from harmful noise exposure.

Studies have shown that exposure to continuous loud noise poses a greater risk to hearing health than the gentle pressure changes created by noise cancelling technology.

Common myths about noise cancelling and hearing damage

Many misconceptions about noise cancelling technology stem from a misunderstanding of how the technology works. The most persistent myth suggests that the technology creates dangerous pressure on the eardrums. In reality, the pressure changes created by noise cancelling are minimal and well within safe physiological limits.

Another common misconception is that noise cancelling technology can cause permanent hearing loss. Research conducted by audiologists and hearing specialists has found no evidence supporting this claim.

Benefits of noise cancelling for hearing protection

Noise cancelling technology offers significant benefits for hearing protection. By reducing ambient noise levels, you’re less likely to increase audio volume to overcome background noise.

This protection is particularly valuable in loud environments where prolonged use causes the risk of hearing damage, as well as other health related issues. Your body has physiological reactions to loud noises. This can put stress on your body, including your heart, blood pressure, sleep and mental health.

Learn more about the effects of noise on your overall health in this podcast

Regular use of noise-cancelling headphones could help prevent noise-induced hearing fatigue and protect against long-term hearing and health issues. Daily noise levels should be below 53dB to avoid issues with health. Repeated exposure to noise is the biggest damaging factor to our health, for example continual exposure to road traffic noise.

Learn more in this podcast

The technology also offers cognitive benefits. Reducing background noise helps maintain focus and reduces the mental effort required to process speech and important sounds. This reduction in cognitive load can lead to decreased stress and improved productivity in noisy environments.

How to use noise-cancelling headphones and other devices safely

Follow proper usage guidelines

Safe usage of noise cancelling technology involves following proper guidelines and best practices. Start by ensuring your device is properly fitted or positioned. For headphones, this means achieving a good seal around the ears. For speakers, microphones and modules, proper placement and connection are essential.

Keep the volume at a safe level

Monitor volume levels even with noise cancelling active. The technology might make listening more comfortable, but it's still important to maintain a lower volume for safe listening levels.

Maintain your equipment

Maintain your equipment properly. Clean your devices regularly and check for any signs of wear or damage. If you notice any unusual sounds or discomfort, discontinue use and have the equipment checked by a professional.

Monitor listening habits and take regular breaks

Regular breaks during extended use allow your ears to rest and help prevent fatigue. Set limits on how long you listen for to ensure you reduce the strain on your ears. You can download apps that track listening habits, so you can understand how long you’re listening for and make any adjustments.

Check for signs of hearing loss

Be aware of the signs of hearing issues and make sure you have regular hearing tests to ensure your ear health is monitored, any changes are detected early, and appropriate support or treatment can be provided promptly.

Shop high-quality noise cancelling products

Noise cancellation is not proven to be harmful when used correctly. It enhances sound quality and protects hearing by reducing the need for high volume levels. Reduce the stress of trying to hear what is being said within a noisy signal with our DSP noise cancelling. Explore our range of noise-cancellation products to find the perfect solution for your needs.