Did you know that you are destroying your hearing?
Part 2

“Sometimes the noise disturbances you get in your early years don’t start to snowball until you get older,” Grunwald said.

It’s just this little hearing loss, and my hearing is a little damaged, “and it didn’t become a problem until later in life.”

What noise can put me at risk of hearing damage during leisure activities?

US workplace safety regulators, the National Institute for Occupational Safety and Health (NIOSH) and the Occupational Safety and Health Administration (OSHA), require that noise exposure be limited to 85 decibels, which is like city traffic noise heard in a car Just as loud. Long-term continuous exposure to noise levels above 85 decibels will undoubtedly put people at greater risk of losing more hearing function over time. Noise-induced deafness can happen all at once, but in some very common cases, the effects may take until later in life to become apparent.

A study from the University of Leicester showed that headphones with a music player can raise the sound level to 120 decibels, and this noise level is deadly because the noise level exceeds 110. The decibel “stripped the myelin sheath of nerve cells, making it difficult for electrical signals to be transmitted from the ears to the brain. If you damage your hearing in this way, the damage is permanent and cannot be repaired. from.

If you were exposed to unusually loud noise in your early years, your hearing damage tends to get worse as you age.

“The noise level of a power tool is about 90 decibels,” said Todd Ricketts, professor and chair of the Department of Graduate Studies in Hearing and Speech Sciences at Vanderbilt University Medical Center. Dr. Said Ricketts: “A chainsaw, a jet ski is about 100 decibels. Or you say a very loud club, a loud concert, it can go up to 105 decibels. A very loud car stereo could even have a noise level of 120 decibels.” , or a little more. If you’re just a few feet away from a weapon, you hear a noise level of 140 decibels, which equals or exceeds the threshold of pain.”

Many people experience “temporary threshold shifts” or hearing fatigue, where after a loud concert or nightclub, for a few days, you hear increasingly muffled sounds, but then it comes back. It’s a chemical way your ear protects itself, and when the fuzz inside your inner ear gets tired, the sound doesn’t seem as clear. If you want to recover, go to a quiet place until Hearing Recovery Sensitivity returns, and to avoid experiencing more temporary changes in hearing threshold in the future.

Hearing loss occurs gradually and is easily overlooked (Credit: Getty Images)
IMAGE SOURCE, BBC WORLD SERVICE
Screenshot,
Hearing loss occurs gradually and is easily overlooked (Credit: Getty Images)

How do I know my hearing is declining?

If you were exposed to unusually loud noise in your early years, hearing damage tends to be more severe as you age or develop hearing damage earlier. Ricketts calls this the “delayed effect.”

A 2013 YouTube video from AsapScience asked, “How old are your ears?” The problem is that you probably don’t like the test results. Your ears are probably 20 years older than you.

If you’re concerned about your hearing, here are some free hearing test apps you can try on your own in preparation for seeing an audiologist.

Did you know that you are destroying your hearing?

Scenarios like this multiply little by little: the guitar of your favorite song doesn’t sound too loud, so you turn up the volume.

You have to fight to hear the conversation on TV. In a crowded bar, you try to understand what your friends are saying, only to discover that it has become a serious challenge for you.

Hearing loss is often not a major event, it forms overnight, but gradually worsens over time. Some experts believe that it is very fashionable behaviors, such as the increasing use of headphones, using them to listen to music and watch movies, that may contribute to premature hearing aging. And the problem may affect young people now more than ever.

Why should I be concerned about my hearing?

“It’s amazing how many times in your life you don’t notice, you notice there’s a lot of noise in your ears and then it’s too late,” said Jill Gruenwald, a clinical auditory therapist at Vanderbilt University Medical Center in Nashville, Tennessee. . , “Today we live with a lot of noise from entertainment, personal audiovisual equipment, concerts, bars, etc., cinemas are noisy. We are exposed to a lot of noise every day.”

The ability to listen to music on the go and at work suggests many of us wear headphones for hours a day (Credit: Getty Images)
IMAGE SOURCE, BBC WORLD SERVICE
Screenshot,
The ability to listen to music on the go and at work suggests many of us wear headphones for hours a day (Credit: Getty Images)

Grunwald lectures on the perception of hearing loss at the Vanderbilt School of Music. She explained that prolonged exposure to unusually loud noise increases the risk of noise-induced hearing loss (NIHL) for anyone, regardless of age. However, there is reason to believe that people may begin to show symptoms of noise-induced hearing loss at a young age, either as a result of the nature of their work or in relation to their recreational activities, especially in Nash Vail, this music center.

Make volume louder mp4

Why would a person want to make their mp4 volume louder?

The answer almost seems obvious: because the volume louder of your mp4 (or any other audio or video file) is too low. There is disparity in the level of loudness in the different audio or video files of that person.

This is very common and the causes are several.

In the first place we find that most of the audio or video files that a person finds have been encoded by amateurs, and that they have used settings almost at random, without understanding what they do.

Could someone explain to me why I have found 4 different versions of the song “Dancing Queen” by the group ABBA and each one has different bit rates? There was one of 96, another of 128, one of 256 and another of 320.

Is it possible that these numbers had been chosen without knowing what they meant? In fact, one had 4800 as a sample rate, two more had 44100 and one 22050.

And if I start to check, I will surely find that my audio or video files have differences like this, without there being a reason. Or maybe the reason is that they have been encrypted by different people, using different encoders… all in a haphazard way.

Someone will tell me that the well-known “Volume War” also has its roots stuck in this matter, but we are not going to delve into this article, we will simply say that it was discovered that the louder an audio sounded, the listener believed that it was better quality and this caused the production companies to increase their loudness or volume levels for no other reason.

Normalize the volume of an mp4

So, when we have already seen the possible reasons, among others, that generate this noticeable difference in volume levels or volume gain in different audios… we can understand that the solution is to take each one to its optimum point. At its best level, without generating distortion.

This is called normalizing the volume or loudness level and Mp4Gain is the best program in this regard.