Please have a look at questions we’ve often received before.
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A good “rule of thumb” for determining if your work area or activity requires hearing protection is as follows. If you have difficulty hearing or understanding a “normal” tone of voice at a distance of about three feet (90 centimeter), noise levels are probably exceeding safe levels and you should be using hearing protection. Many activities and tools require the use of hearing protection. This includes, but is not limited to, lawn mowers, tractors, leaf blowers, weed trimmers, chain saws, concrete saws, concrete/hammer drills, snow blowers, power saws, working near running chillers, etc. Firearm uses ALWAYS requires hearing protection.
| Event | Average dB | Max. exposure time |
| Gun shot, gun shot | 124 – 161 | 0! Treshold of pain |
| Concerts / festivals | 115 | < 30 seconds |
| Sporting event | 114 | < 45 seconds |
| iPod, MP3 players | 112 | < 1 minute |
| Jackhammer, chainsaw | 109 | 2 minutes |
| Motor Cycle | 98 | 22 minutes |
| Aerobic class | 94 | < 1 hour |
| Subway | 93 | < 1,5 hour |
| Heavy traffic | 85 | 8 hours |
| Vacuum cleaner, busy street, alarm clock | 80 | > 8 hours |
For all kind of uses we have created products with special filters for you. The average attenuation (damping), is mentioned on the packaging.
“15dB” filters reduce the sound level by 15dB making it safe for 8 hours continuous use in any environment up to 100dB. To compare: 100dB can cause hearing damage after being exposed for 15 minutes!
“20dB” filters reduce the sound level by 20dB making it safe for 8 hours continuous use in any environment up to 105dB. To compare: 105dB can cause hearing damage after being exposed for 4 minutes!
“25dB” filters reduce the sound level by 25dB making it safe for 8 hours continuous use in any environment up to 110dB. To compare: 110dB can cause hearing damage after being exposed for less than 2 minutes!
Another difference is the attenuation over the frequency’s. Our regular filters give you already a very nice performance ensuring clarity of sound with full sound dynamic. But the flat attenuating filters are simply the best! An easy way to recognize them; all the 49,95 Euro solutions in our webstore contain flat attenuating filters.
Your Crescendo hearing protection is 100% designed and produced by Dynamic Ear Company from Delft, The Netherlands. We have a passion for sound and hearing and all our efforts go into creating and making the best sound filters for you.
You can expect from us the best sound experience, whilst still being protected against too high sound levels. All Crescendo filters are 100% acoustically tested so you can be assured of their performance.
Some of the benefits of Crescendo hearing protection:
Natural sound – Filter technology maintains spatiality
Feel better – High noise levels are tiring, Crescendo reduces noise
Comfort – Crescendo filters allow air into the ear minimising irritation and ‘hot ear’
Environmental friendly – Our medical grade TPE ear tips are made of 100% organic material generating only carbon dioxide and water during incineration
Upgradable – The filters of your Crescendo hearing protection are replaceable and upgradable for use in custom fit ear moulds designed for Dynamic Ear Company products
Safety standards – Hearing protection certified to CE and ANSI standards
Long lasting – Reusable Hearing Protection, fully washable tips and filters
We would recommend purchasing the Crescendo Events which will give you enough protection to last a whole day while still being able to enjoy the good vibes of the festival event.
Please have a look at our User Instructions page.
For construction and industry/factory type situations with loud continues sound levels we recommend using the Crescendo Work.
With an average protection of 24dB (SNR); you will still be able hear everything at safe sound levels whilst allowing you to still communicate with co-workers, hear alarms and keeping spatial and situational awareness.
Please can contact us through our Customer Service page contact form or by sending an email to sales@dynamic-ear.com
In the packaging we supply two sizes of ear plugs that fit most people (Medium and Large). If the supplied ear plugs do not fit please contact us through our Customer Service page contact form.
To best help you out we request to add the information below to your email. Depending on your location you will be contacted by us or our local Crecendo dealer.
NOTE: Please do not forget to swap the filters to the set of ear plugs that you are going to use.
The ear tips and filters are fully washable. For cleaning the filter, use warm water only. The ear tips may be cleaned with warm water and a mild soap. Please read the instruction manual carefully how to insert the filters back into the ear tip.
The normal sound level of the bedroom is typically 40 dB this means that any sounds become extremely intrusive. Although the sleeping plug must reduce snoring to acceptable levels we must also consider all other noises which cover the whole human hearing frequency range (typically up to 20 kHz in a young person).
A true sleeping plug must provide a hearing attenuator that is;
1. Comfortable to wear for a period 6-10 hours
Air into ear to reduce heating and irritation
soft so that the person can sleep on their size
flexible to reduce compression of arteries in the ear – causing the user to hear their heart beat
2. Reduce all noises typically heard when trying to sleep, in particular for the traveller where other sounds are also heard
Babies crying or screaming 2.5 to 3kHz @ 115 – 130dB
Snoring 40-90dB (loudest) @ 137Hz, 1.25kHz and resonant frequencies to 7kHz. Average noise level 70-75dB
Traffic – road noise, engine noise, horns, refuse collection etc 90-110dB
Aircraft
Rain, storms, thunder upto 130dB
Alarms, cars, fire etc
Clubs, bars, revellers shouting, music
air conditioning 60dB @ 200Hz typical
3. Allows the morning call or alarm clock to be heard.
Typical alarm from clock or phone 80dB @ 800 to 2kHz
It can therefore be seen that some of these sounds are in conflict with each other. The Crescendo Sleep uses technology to not only filter sounds but also to allow air to enter the ear. This allows the ear to remain cool and avoid ‘heating’ or ‘hot ear’. The medical grade TPE material is designed for comfort and hygiene, both the tip and filter are washable to reduce the risk of infection which happens when hearing protection is worn for long periods of time.
The Crescendo Sleep meets the requirements found in paragraph 1.
Snoring is typically 70 to 75 dB although a loud snorer can reach levels of 90 dB, the typical frequency range of the snore has 2 fundamental frequency at 137 Hz and 1.25 kHz, encroaching on the region in which human hearing is most sensitive (2-3 kHz). The DEC Sleep attenuates by 20 to 24 dB though out this range bringing a typical snore sound level to 50 dB, just above the level of a typical room. Consideration must be given to the alarm clock which is only just louder then a typical snore and at some of the same frequencies. The Crescendo Sleep ensures that the alarm can still be heard a sit is 5 dB + higher (more than twice the power of the attenuated snore).
the Crescendo Sleep reduces all other sounds by 23 to 30 dB, depending upon the frequency, bringing them down to unobtrusive or comfortable levels so that they have minimal effect on the sleeper.
If you are not entirely satisfied with the Crescendo Sleep, we can also offer a full block filter however this would not be as comfortable when worn for long periods due to no air entering the ear, the same problem found with other total block type solutions such as foam, malleable wax etc. These products totally block the ear causing it to ‘heat’ and irritate during the night.
The Fly earplugs come with filters that contain a membrane that provides slow changes in pressure; hence the pain often encountered during take off and landing is reduced (when the earplugs are inserted correct).
Fit the earplugs prior to take off. The preferred method is to keep the plugs in the ears for the duration of the flight, this will reduce the background noise such as air conditioning, engine noise whilst allowing voice through. You probably experience that understanding conversation is easier.
The Crescendo earplugs are made from medical grade TPE (unlike competitor products made from silicone) and have been independently tested for comfort during 12 hours continuous use.
Our products are distributed globally through an extensive network of partners.
Please leave us a message through our Customer Service contact form and we will put you in contact with our nearest Crescendo Hearing Protection dealer.
Unfortunately, our Crescendo products are no longer available through this website.
Please leave us a message through our Customer Service contact form and we will put you in contact with our nearest Crescendo Hearing Protection dealer.
You can contact us by visiting our Customer Service page and leave us a message through the contact form.
You can contact us by visiting our Customer Service page and leave us a message through the contact form.
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