By combining the hole filter and tuning cotton, the filter earplug can more effectively reduce the harmful noise of various frequencies, and enable the human ear to obtain the desired sound. At the same time, the filter earplug can be used to adjust the pressure inside and outside the ear. It can be used to listen to music, normal communication, sleep, study, and work in a noisy environment, reduce the pressure difference of the ear canal during flight, relieve tinnitus, ear pain, etc.
The difference between a filter earplug and a traditional earplug
The biggest difference between a filter earplug and a traditional earplug is its filter. On the basis of the traditional sound insulation earplug, there is a noise filter outside the earplug. The proximal end of the device is inserted into the earplug, and its inner diameter is smaller than that of the outer earplug.
The filter earplug has a professional hole-type filter device, which can effectively isolate all kinds of noise. The key problem is that it can deal with different situations according to the needs, because the program of the filter earplug is completely adjustable, and the old friends in different environments have different countermeasures, which perfectly respond to the noise environment.
Do filter earplugs need electricity?
There are no electronic components in the filter earplug, so it does not need to be charged. The device has a built-in “acoustic filter” with a fabric grid structure, which can block the noise and release the noise of the surrounding environment at the same time.
Noise reduction principle of filter earplug
Loudness refers to the subjective perception of the sound (commonly known as volume), which is determined by the “amplitude” and the distance from the sound source. The greater the amplitude, the greater the loudness, the smaller the distance between the person and the sound source, and the greater the loudness.
As a kind of wave, the frequency and amplitude of sound become the important properties of describing waves. The size of frequency corresponds to what we usually call pitch, and the amplitude affects the size of the sound. Sound can be decomposed into sine waves of different frequencies and intensities.
Tone refers to the level of sound (treble and bass), which is determined by “frequency”. The higher the frequency, the higher the tone (frequency unit: Hz). The range of human hearing is 20-20000 Hz. Below 20Hz is called infrasound, and above 20000hz is called ultrasonic). For example, the sound at the low end or higher sound, such as string sound.
The earplug matches the exclusive acoustic filter according to the scene, which helps to attenuate the background noise. But don’t over-close your ears so you can still hear the alarm clock and other important sounds.
Earplugs are equipped with different decibel filters, some of which can be disassembled and assembled. Different colors, noise reduction effect is not the same, if you want to know, please click to contact us.