Home > Wooden Headphones > What is the principle of Bluetooth headset noise reduction? Is it really necessary to use noise-canceling headphones every day?

What is the principle of Bluetooth headset noise reduction? Is it really necessary to use noise-canceling headphones every day?

2021-03-05 94
As the most mainstream listening device at present, Bluetooth headsets have always been the subject of discussion by enthusiasts. On the one hand, it is the trouble of knotting the wire of the wired headset, and on the other hand, it also solves the embarrassment of type-c not being able to listen to songs. When it comes to noise reduction, the most popular function today is nothing more than noise reduction. In the face of noise everywhere in life, if you want to quietly enjoy your own time alone, noise reduction is nothing more than noise reduction. When it comes to noise reduction of Bluetooth headsets, there are two basic categories. It is active noise reduction and passive noise reduction: the active noise reduction function is to generate a reverse sound wave equal to the external noise through the noise reduction system, neutralize the noise, thereby achieving the effect of noise reduction, the principle can be divided into 4 steps:

1. First detect the low-frequency noise (100 ~ 1000Hz) in the environment that the ear can hear by the signal microphone placed in the earphone

2. Then the noise signal is transmitted to the control circuit, and the control circuit performs real-time calculations

3. The horn emits sound waves with the opposite phase and the same amplitude as the noise to cancel the noise


What is the principle of Bluetooth headset noise reduction? Is it really necessary to use noise-canceling headphones every day?


4. So the noise disappears and cannot be heard

Passive noise reduction can also be called physical noise reduction, that is, headphones use other materials or accessories to reduce noise, similar to the soundproof earmuffs of headphones. Having said so much, it is not difficult to find that the harm of daily noise has deeply affected our lives, so buying a noise reduction headset may become a rigid need, whether it is for your own health or an attempt to black technology. Noisy headphones are a good choice
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