Hocks Noise Brakers®

3930 SW Kelly Avenue
Portland, OR 97239
ph: 503-274-9482
fax: 503-222-3539
alt: 1-800-654-6257
contactus@noisebrakers.com

Protect Your Hearing

If you are going to be exposed to loud noises on a constant basis, or encounter brief bursts of extreme noise (such as power tools or a gun shot), you need hearing protection.

The strength of hearing protection is shown as NRR (noise reduction rating).

The NRR indicates the average number of decibels sound will drop with hearing protection. The actual number that decibels will drop varies greatly, depending on the pitch (the highness or lowness of sound) and volume.

With filtered plugs (like the Hocks Noise Braker®) the actual amount of sound reduction increases as volume increases.

Custom Fit Ear Plugs

Custom fit ear plugs are fitted to a persons ear for an exact fit. They are made from a silicone or acrylic material. Because they are custom made to fit a specific ear, they function consistently and have a NRR of up to 31 dBA.

Earmuffs

Earmuffs are worn over the ear, and, like custom fit ear plugs, function consistently. They have a NRR of up to 30 dBA, and may be worn with other ear plugs for even greater sound protection.

Disposable Ear Plugs

Disposable ear plugs are made of foam, silicone or other soft material.

When inserted into the ear canal they block out harmful sound. They can have a NRR of up to 33 decibels. The actual noise reduction varies greatly between people, depending on individual ear shape, determining how well the plug fits.

Other generic plugs are available that are made of more durable material. These plugs can be worn over and over again.

Hocks Noise Brakers®

The Noise Braker® comes in both a standard and custom model.

The standard model is a generic ear plug with a
Noise Braker® filter (white filter shown in photo).

The custom model is simply a custom fit ear plug, with a Noise Braker® filter inserted into it.

Noise Brakers® do not block sound, they let it in at a reduced volume.

The amount of sound that is filtered out depends on the volume. As the noise level increases, so does the amount of hearing protection! (See how the Noise Braker® works.)

The Noise Braker® has an NRR of 19 dBA. The actual amount of noise reduction depends on fit (in the case of Noise Braker® Standards), volume (the louder the volume, the more noise is reduced), and pitch (lower sounds are not reduced as much as middle to high sounds).

See the Test Data