Posted March 07, 2018 05:09:54 The best way to protect yourself from hearing damage from noise pollution is to invest in noise canceling equipment, according to a new study.
The researchers found that while the noise cancellation system in the earpiece you buy can be used for many different purposes, the best noise canceler for the hearing is the one you build yourself.
That is, they found that a custom noise-cancelling microphone works best when it is designed to do more than just block the sound of the music you are listening to.
They tested this claim by installing a custom microphone in a noise-restricted room and recording the sound through a pair of earphones that were fitted with custom-designed earpads.
“We wanted to know if we could actually create the noise canceller that we want and we have to make sure that it’s not just the loudest noise that can block out the noise that’s coming from the room,” lead researcher Andrew Bicknell, a postdoctoral researcher at the University of New South Wales (UNSW) in Melbourne, told CBC News.
“The earphones, we had to make them noise-resistant so that the noise would not be heard through them.”
A custom noise cancellation microphone.
Photo by Andrew Bicksett.
The team also used an earphone with custom noise blocking earpods to record a noise that was louder than what was being heard in the room.
When listening to a loud noise, the noise is absorbed into the earphones and is effectively blocked by the noise-blocking earphones.
But when the noise comes in from the earphone, the earpod is actually causing the noise to travel through the earring and be blocked by a custom-made noise canceancer, Bicksnell said.
“If you put a microphone in there, the volume of the sound coming out of it is reduced and the sound is actually blocked,” Bickett said.
The research also revealed that the best choice for noise-filtering earphones is the earpad that you buy.
The study found that the average earpad is rated to block around 85 per cent of the noise of a speaker, which means that the microphone in the EarPad will block up to 85 per per cent more noise than any earpad on the market.
The earpad rated to reduce noise in the most sensitive hearing is also the one that the researchers used.
Bicksert’s team tested earpad earpieces in different settings to see which earpad would block the most noise.
They also tested earpad noise-silencing earpaddles, which use a foam that can be removed to allow for easier removal of the earbuds and earphones when the earpieces are removed.
The noise-proof earphones also have a small microphone mounted in the middle of the body.
“So when we removed the microphone, the microphone went back into the body and the ear buds and the microphone were still able to block noise,” Bickset said.
When it comes to sound quality, the research found that noise-cleaning earphones are the best way of protecting your hearing.
Bicket said the noise you are hearing is actually from the sound waves that are coming from your head.
“These waves are basically bouncing off of the walls and ceilings of the room and that’s what’s causing the sound to bounce back into your ears,” Brickset said, adding that these waves also bounce off of your body.
When the noise from the walls is blocking out the sound from the microphone it can actually affect the way the hearing can function.
“In the study, when you are moving in a noisy environment you actually hear more than when you’re just standing still and listening,” BICKET said.
Bricksett and his colleagues hope the research will lead to better design for noise reduction systems for people who have a hearing impairment, including those with low-frequency hearing loss.
They will also look at how earphones can be improved to provide noise-free music listening in different situations.
“With the earplug, the only way to get sound is through the headphones, and so we want to be able to do that when you don’t want to hear it,” Brickett said, noting that it can be difficult to hear music when you have low-level hearing impairment.