Unika REFERENCE RHA1, Руководство пользователя

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2
UNiKA
User Manual
LOUD AND DANGEROUS SOUND IS
ALL AROUND US
Your hearing isn’t just in danger at a rock concert or construction site (although both of
those situations are, indeed, harmful to your hearing). There are potential hazards with
many every-day sounds. That’s because it’s not exclusively the volume of a sound that is
dangerous, it’s also how long you’re exposed. Even lower-level sounds, such as dense
city traffic, can be damaging to your hearing when experienced for more than a couple of
hours.
Generally, here’s a rough outline of when loud becomes too loud,
• 30 dB: Everyday conversation would be at this volume level. You should be perfectly
fine at this volume for an indefinite length of time.
• 80
-
85 dB:
An air conditioner, heavy traffic, and a lawnmower are at this level
of sound. This level of sound will normally become damaging after two hours of
exposure.
• 90
-
95 dB:
A motorcycle is a good illustration of this sound level.
50 minutes
is
enough to be unsafe at this level of sound.
• 100 dB: An approaching subway train or a mid-sized sports event are at this sound
level (of course, this depends on the city). 15 minutes of exposure will be enough
to be harmful at this sound level.
• 110 dB: Do you ever turn the volume on your ear-pods up to max? That’s usually
around this sound level on most smartphones. 5 minutes will be enough to be
dangerous at this level.
• 120 dB and over: Anything over 120 dB (think loud rock show or exceptionally
large sports events) can produce instant injury and pain in your ears.
PREVENTING DAMAGE TO HEALTH AND HEARING
• Please protect your hearing from high volume levels. Permanent hearing damage
may occur when headphones are used at high volume levels for long periods of time.
• To prevent hearing loss and damage from excessive headphone use, the WHO
suggests keeping noise levels below 70 decibels over a 24-hour period.
Decibels are the measurement of how loud a sound is.
• A good rule of thumb is usually to keep your headphones at less than 60% of
maximum volume. Generally, the volume greater than 120 decibels can cause
instant orpermanenthearing damage.