using earphones while driving is very dangerous because ____________ fill in the blanks ..... its urgent please I am in class 7 th
Answers
answer:
it causes accidents
Explanation:
1. The earphones and headphones with the widest frequency range sound best.
False. A frequency range is supposed to state the lowest and highest frequency produced by a headphone. The normal range of human hearing is approximately 20Hz to 20kHz. Some specs go WAY past that— like 5Hz to 50kHz— which is incredibly misleading. That is not only well out of the range of human hearing, but also says nothing about what happens between those two frequencies. Our ears are most sensitive between 100Hz and 10kHz, so the relative amount of energy that a headphone produces throughout this range is much more important than what happens ≤20Hz or ≥20kHz.
2. Earphones and headphones can be damaged by loud sounds.
False. A headphone or earphone can put out dangerous sound pressure levels (SPLs) before hitting its breakdown volume. That's the point where the product stops increasing in volume and becomes more distorted. The amount of electrical signal required to damage the product is higher than the distortion point. Loud sounds (high SPLs) won't necessarily damage the product, but excessively high electrical signals can.
Exposure to sounds above 85 decibels (SPL) can cause permanent damage to your hearing, so please listen at safe volumes.
SRH1840 Product Shot
3. Open-back headphones are strictly for mastering and mixing.
False. Sound is a very personal thing. The "right" way to listen to or hear music is completely dependent on the preferences of the listener.
The biggest difference between open-back and closed-back or semi-closed-back headphones is isolation. Open-back headphones allow sound to pass through the ear cups. Music listeners use them in quiet environments—at their desks or in their homes—to achieve a listening experience that some describe as "in the world around me" as opposed to "in my head." They're looking for an open, airy, spatial feel that isn't as isolating as closed-back headphones. That's one of the reasons that they're popular in professional applications: they can provide what some users feel is a more natural sound.
4. Noise-cancelling earphones are superior to Sound Isolating™ earphones.
False. One isn't better than the other; they are simply different. Noise cancellation is an electronic process. In each earcup, there's a microphone that samples the ambient noise near the ear. That noise signal is fed into an electronic circuit that analyzes it and creates a mirror image of the noise, then adds the noise back into the music signal. Some of the real noise is cancelled out by the mirror image inverse noise. It works best on steady low-frequency noise below 1000Hz or so—for example, the drone of aircraft engines, or the hum of a ventilation system. It doesn't work as well at removing speech or other rapidly changing sounds.
Because this is an electronic process, noise cancellation circuitry requires a battery to function. And like all circuitry, it has some degree of hiss and even some digital processing artifacts. Some people complain that when they're wearing noise-cancelling headphones, they hear a whooshing or a rushing sound, or they detect varying air pressure in their ears.
Sound Isolating™ earphones work passively, the same way that earplugs do. The soft, pliable sleeves that Shure supplies with its earphones fit snugly into your ears and physically block the outside noise from entering the ear. Just like earplugs, the fit is very important. That's why Shure supplies multiple sizes and styles of sleeves with all of their earphones.
Sound isolation actually provides greater noise reduction than noise cancellation circuitry does. Sound isolation works across the entire audible spectrum, not just low frequencies, and not on just slow, droning kinds of noise. Sound isolation is great for blocking speech, a noisy television, other music…and it works in all kinds of traveling environments, including planes, trains, and on foot. Plus, there are no electronics that require batteries and cause a hiss or buzz. There's nothing except the music, movie or game itself.
All Shure earphones are the Sound Isolating type.