Carmakers have developed countless technologies to keep you safe in the case of a collision. Pink noise technology is one of them. Let’s get started.
Pink noise refers to a broad spectrum of frequency in which the power is inversely proportional to the frequency. Pink noise is acoustic energy, which is distributed evenly by the Octave to the entire audio spectrum (human hearing range, from approximately 20 Hz to 20 Hz).
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If you skipped college physics and listened to a lot of records instead. Then you might better understand pink noise as using different octaves of the same tone where each of the octaves has the same frequency power as the other. It is because of it, a lot of people hear the pink noise as being “even” or “flat”.
It is difficult to differentiate between white and pink noise for most people. Pink noise, which sounds similar to white noise, is being used by the carmaker to protect hearing in the events of a car crash. Mercedes has described it in its marketing materials, “like a little traffic noise, a breakdown of waves or waterfall.
How pink noise technology used to protect hearing?
Pink Noise is used in many technologies such as Mercedes. Every one of us heard the car brand Mercedes. You will be surprised to know that when a car is about to crash, Mercedes immediately detects it and utilizes a burst of pink noise which causes the contraction of stapedius, an inner ear muscle. And also supports the eardrum of the individual from the ear-splitting noise of the car crash itself. That can protect the ear from hearing loss or tinnitus.
Mercedes is using pink noise at about 80 dB, which is quite similar to that of a dishwasher. It is also similar to a freight train passing by at 15 meters away.
The cars will release pink noise technology just before an imminent car accident. This release helps in preparing your ear from the potentially deafening noise of the crash. Importantly, the noise from the crash can register at 145 dB, a level above that recorded when a jet aircraft takes off from an aircraft carrier.
Also, the noise created by the immediate deployment of the airbag is about frequency 165 dB. And it is estimated that 17% of people exposed to airbag deployment suffer some degree of permanent hearing loss, the article reports.
The terms “pink” and “white” come from optics. Compared to small optical wavelengths (near high variants, the violet ends of the visible spectrum), there is spectral power density on long-term optical wavelengths (low frequencies near the red end of the visible spectrum) in the visible color pink. Some engineers talk about “brown noise”, which is similar to pink noise, except that the spectral power density decreases even faster with increasing frequency.
Can pink noise protect against hearing loss?
The protection of hearing impairment with the help of pink noise will not be possible overtime or in many other cases. It can also be harmful to hearing when used loudly over a long time. However, some of the hearing aid machines also use pink noise for tinnitus patients. For tinnitus patients, this noise help in reducing the continuous ringing in the ear.
Protect your hearing, protect your brain
New pre-safety measures like deployment of pink noise can be used in an automobile. It is a new level of safety protection hearing. And perhaps other uses of technology can be developed and used beyond just high-end vehicle safety. For example, perhaps there is a possibility of loud bursts of workplaces, investigations of other uses of pink noise bursts. Use of military techniques where loud explosives and guns are used.
White, pink, and brown noise can be generated by an acoustic synthesizer to produce sound effects on the beach, fast winds through the trees, unloading a rocket and other events. White and pink noise is used by audio engineers for testing and adjusting sound recording and reproduction equipment.