Acoustics & inears
The Ears4u in-ear monitors fit perfectly in the ear canal. This leaves no more than half a cubic inch of space between the eardrum and the monitor; a perfect acoustic base to hear all details in music while the volume remains low.
The sensitivity (dynamic range) of the human ear and our in-ear monitors, are expressed in decibels (dB). The distinctiveness of a given sound is done in comparison with the noise level that is present in that room. So if you want to listen to music in a room where is spoken loudly (80 dB) then you have to turn up the volume to hear the music undisturbedly. To make sound seem twice as loud, a level boost of 6 dB (!) is required.
A sound is made of air vibrations composed from different frequencies. These air vibrations (frequencies) are indicated in hertz (Hz) or kilohertz (KHz = 1000 Hz). One Hertz is one cycle per second. Low-frequency sounds are located about 50 Hz and very high sometimes about 15 KHz, speech is located approximately between 500 Hz and 4 KHz.
Theoretically a human being is sensitive to frequencies from 25 to up to 20,000 Hertz. However, the sensitivity of the ear quickly begins to decrease as you get older, especially above your twentieth year. Don’t be surprised if you can only hear up to 10 Khz when you’re 60 years old. Manufacturers of audio equipment sometimes proudly mention in their technical specifications a frequency range of up to 50,000 Hz (50 kHz). That seems only important to bats, who get pretty nervous of that high frequency. For the music lovers and audio reviewers to get their feet back on the ground; below an overview of the frequency range in which the main instruments occur. Our in-ear monitors show the frequencies of these musical instruments in all their beauty.