Principle of noise-reducing earphone
Noise-reducing headphones adopt active noise control, which is different from the passive sound insulation of general headphones. Its principle is:
1. First, use the signal microphone placed in the earphone to detect the low-frequency noise in the environment that the ear can hear (100 ~ 1000 Hz).
2. The noise signal is transmitted to the control circuit, and the control circuit performs real-time operation.
3. The hi-fi speaker emits sound waves with opposite phases and the same amplitude to eliminate noise.
So, the noise disappeared and I couldn't hear it.
New product recommendation of noise-reducing headphones
AKG/ akg N90Q Headphones Music HIFI Headphones Active Noise Reduction Built-in Power Amplifier DAC 1 1999 Yuan
N90Q is a monitor headphones with customized sound by Grammy legend QUINCYJONES. It adopts AKG's new TRUNOTE technology, measures the frequency response through software and a micro microphone in the earmuffs and makes automatic correction, which can be optimized for each ear individually.
JBLV300 Elite Headset Wearing Bluetooth Headset Active Noise Reduction Headset Bluetooth 4.0 1998 Yuan
Ergonomically shaped ear pads provide a comfortable feeling of wearing, support folding and are easy to store and carry. Active noise reduction technology and adjustable environmental sensing technology are convenient for users to flexibly adjust the balance between environmental sound and music, and create a private listening space.
Philips/Philips SHB9850NC Heavy Bass Wireless Headset Noise Reduction Bluetooth Headset 1099 Yuan
It uses microphone sensors and electronic systems to generate reverse copies of environmental noise and transmit them to people's ears. When the earphone unit produces the reverse copy of noise, the environmental noise will be greatly reduced. The noise reduction effect is mainly composed of fine tuning of electronic system and acoustic engineering and the application of passive sound insulation.
Noise-reducing headphones can keep people away from the hubbub of life, enjoy this wonderful music wholeheartedly, and let people devote themselves wholeheartedly to their own world. About the principle of noise-reducing headphones and the new products recommended by noise-reducing headphones, Bian Xiao will introduce them to you here, hoping to help you understand noise-reducing headphones.