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The human ear is designed to receive the minute longitudinal vibrations in the air that make up sound waves. The ear is very sensitive to excessive noise, and can suffer temporary damage after short periods of exposure to loud noise. The noise levels at which regular, sustained exposure may cause permanent damage are 90 to 95 decibels. The range of sound produced by the violin can range from 84 to 103 decibels. Violinists who play in orchestras are often exposed to loud noise during rehearsals and performances. Practising with an earplug in the left ear can be an interesting way of hearing the projected sound of your violin, but it can be difficult to hear yourself or others properly when you wear earplugs in an ensemble.
Sustained exposure to noise levels over 85 decibels (dB) can lead to permanent hearing damage, also referred to as Noise-Induced Hearing Loss (NHL).
Painstaking research and development has resulted in CMS Danskin embracing a number of different materials in our battle against industrial noise.
Our acoustic barriers and sound damping sheets are quick and easy to apply or install and will work as part of a noise-reduction strategy across a broad spectrum of industries, from the automotive to the agricultural. Vibrations can be sensed through the jaw and shoulder, and the body of the violin is positioned almost directly under the left ear.

If the loud noise is experienced over long periods of time, damage can become permanent, resulting in hearing loss and tinnitus. A study of players in the Chicago Symphony Orchestra showed an average 6 decibel loss of hearing in the left ears of violinists, recommending that violinists use an ear plug in the left ear whilst practising. Conversely, when the level of noise is very high, it can actually be easier to hear detail when using earplugs.
Although tinnitus can be treated with vibration therapy, once hearing is damaged, it is not possible to repair it. And the inner workings of the ear are not the only things to suffer from ongoing exposure to industrial noise known side effects of NHL are stress and increases in systolic blood pressure, significant factors in ill health.
As well as the aforementioned bitumen and thermoplastics, we&rsquove created acoustic barriers and sound damping sheets around the noise reducing capabilities of EPDM polymers, barium sulphate, phthalate esters, and mineral fillers.
The middle ear takes the vibrations, which are at a fairly low intensity, and magnifies them. Tinnitus is a disruption to the tiny hair cells of the inner ear, which leads to an alteration in the electrical impulses that are delivered to the brain. The sound of a large orchestra can reach 112 decibels, and a survey has found that 52% of classical musicians suffer from hearing loss, and 15% suffer from permanent tinnitus.

Many musicians also suffer from hyperacusis, a hearing disorder characterised by reduced tolerance to specific sound levels not normally regarded as loud for people with normal hearing. In very high noise levels, the ear actually becomes saturated with sound, and blocking out some of that saturation frees some of the receptors to listen to other things. Effective application of acoustic barriers and sound damping sheets can dramatically reduce industrial noise, bringing it down to safe levels. The vibrations then pass through the fluid in the inner ear, causing the tiny hair cells to bend. This new pattern of signals can be recognised by the brain as a whistling, buzzing, or high-pitched ringing sound. For example, a violinist with an over-sensitive left ear may find it unpleasant to hold a telephone to that ear.
This causes electrical signals to pass through the auditory nerve to the brain, where the vibrations are interpreted as sound.

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