There are many kinds of earphones at present, and I believe many people are curious about what bone conduction earphones are. Today, I will tell you what bone conduction headphones are, and some of their advantages and disadvantages.

Bone conduction is a method of sound conduction, which converts sound into mechanical vibrations of different frequencies, and transmits sound waves through the human skull, bone labyrinth, inner ear lymph fluid, spiral organ, and auditory center.

Compared with the classic sound conduction method that generates sound waves through the diaphragm, bone conduction saves many steps of sound wave transmission, and can achieve clear sound restoration in a noisy environment, and sound waves will not affect others due to diffusion in the air. . Bone conduction technology is divided into bone conduction speaker technology and bone conduction microphone technology: bone conduction speaker technology is used to send a voice, and the voice is heard. Air conduction speakers convert electrical signals into sound waves (vibration signals) and transmit them to the auditory nerve. The bone conduction speaker is a sound wave (vibration signal) converted from an electrical signal directly transmitted to the auditory nerve through the bone. The transmission medium of sound waves (vibration signals) is different. Bone conduction microphone technology is used to receive a call, and when the call is received, the sound is collected. Air conduction transmission is the transmission of sound waves through the air to the microphone, while bone conduction transmission is transmitted directly through the bone. Earphones made with these bone conduction technologies are called bone conduction earphones.

Principle of bone conduction earphones: Usually, we transmit sound waves through the air to the eardrum, and the eardrum generates vibrations and transmits it to the cochlea, thereby producing hearing.

Transmission path: sound source, air, external auditory canal, tympanic membrane, cochlea, auditory nerve

In addition to transmission through the air, it can also be transmitted through the bone, skipping the transmission route of [air-tympanic membrane], and directly transmitted to the inner ear through the vibration of the skull, resulting in hearing, which is called bone conduction.

Path of propagation: sound source, skull, cochlea, auditory nerve

Let’s talk about the advantages and disadvantages of some bone conduction headphones.

advantage:

• Comfortable to wear: the earphones do not need to enter the inner ear, and there is no pressure;

• Hygiene and health: reduce bacterial contact and will not induce otitis;

• Audible external sound: During exercise, when running on the road, you can hear the ambient sound to ensure personal safety.

• High waterproof level.

Disadvantages: The sound quality is average; sound leakage: the bass and treble are not obvious, and the phenomenon that bone conduction headphones commonly exist, such as subwoofers.

The following is a popular science for some usage experiences.

Does wearing glasses make a difference?

Basically does not affect the use.

Are these earphones harmful to the ears?

Any earphones worn for a long time will affect hearing, but bone conduction earphones will be much less harmful due to their different transmission routes and wearing methods.

How to choose the waterproof level?

The waterproof level is divided into IPX3 - IPX8, the higher the waterproof level, the better. Major Headphone Brands

In the market of this kind of headphones, Shaoyin and Nanka occupy most of the market. Other brands are: Newman, Patriot, Weidong, SNBEI, Gu Shi, HFO, Xuge, FMJ.

The above is the popular science of bone conduction headphones.