As we all know, sound needs media to spread. Sound cannot travel in a vacuum, because air is also a medium. Every day we talk, including listening to music with headphones and listening to music with stereos, through the air.
When listening to music on the stereo, people around you can hear it. Wearing headphones can enjoy private space, not afraid of influencing others, and not afraid of revealing privacy. But you should know that ordinary headphones also leak sound, because the headphones themselves are also spread by gas, and the sound is heard by vibrating air, which vibrates the eardrum. The reason why we can't feel it is because the sound generating unit of the earphone is very close to our eardrum, and the sound can be turned down very little, and it is still wrapped in the ear, so we can't feel the sound leakage.
Although bone conduction headphones transmit sound by vibrating bones, the sound generating unit is a "vibrator" rather than a "speaker". However, when the vibrator vibrates our bones, the shell of the earphone will also vibrate the air next to it. Because bone conduction headphones are exposed to the air and do not have the advantages of ordinary headphones, this is how the problem of sound leakage arises.
Is there a solution to bone conduction leakage?
The answer is yes! After understanding how the sound leakage is caused, the solution to the sound leakage will naturally be solved. The simplest way to reduce the sound leakage is to reduce the vibration of vibrator and shell, and reduce the vibration of earphone. In fact, most manufacturers in the market do this. The sealed fuselage and softer shell reduce the sound leakage caused by vibration. But it is not enough to do this. Although it won't be as loud as a speaker, it can still be heard from two or three meters away.
Later, in order to reduce the sound leakage, bone conduction began to use more advanced "vibrators" to reduce the sound source, and through the blessing of software algorithms, the noise emitted was offset at the earphone end. However, at present, bone conduction headphones are in the primary stage of popularization. Although there are more and more brands, there are few brands with core technologies. At present, one of the better leakage reduction technologies is the OT leakage closure technology 3.0 of South Carolina, and the other is the LeakSlayer leakage elimination technology with less yin.
Among them, Nanka has the best sound reduction effect, because Nanka's vibrator adopts AF full-vibration directional vibrator, which has a larger effective sound producing area and smaller vibration feeling than traditional vibrators. The actual effect can reduce the sound leakage by 90%, and the sound leakage can not be heard at a distance of 20 cm at 70% volume.
Here are some bone conduction headphones with good sound leakage control.
First, South Carolina runner Pro3 bone conduction headphones
Although its brand awareness is not high, it is a behind-the-scenes technical hero in the field of bone conduction headphones. As early as 20 12, we began to develop bone conduction headphones that don't hurt our ears. With the original full vibration directivity technology, it has gained a reputation in the field of bone conduction and has been recommended by the majority of otologists! It has also passed the effective certification of the clove doctor team. In order to solve the sound leakage problem of bone conduction Bluetooth headset, Nanka developed OT closed sound leakage prevention technology, and gradually improved it in the direction of headset vibrator, body design and software optimization. This South Carolina runner Pro3 adopts South Carolina OT closed sound leakage prevention technology 3.0 technology, and the final sound leakage can be reduced by 90%.
South Carolina Runner Pro is made of memory titanium, and the contact area can be adjusted by itself to ensure a good wearing experience of headphones at any time, taking into account more users. As the core component of the product, the earphone chip plays a key role in the product experience. Runner Pro3 is equipped with Bluetooth 5.2 chip, which fully optimizes the basic product experience, and also adds NFC quick pairing and one-drag-two functions to make the operation more portable.
Second, AS800 bone conduction headphones with less sound
AS800, the first feeling of people who have used bone conduction is that they are very light and almost forget the sense of existence. In terms of battery life, the continuous playing time can exceed 8 hours, which can be said to be very delicate bone conduction. However, Shaoyin is essentially developed for sports, so it is not difficult to see that it is more inclined to sports style in terms of spokesperson or function. The sound generating unit is very thin, and it will feel a little oppressive if worn for a long time. Function IP67 waterproof coefficient, daily outdoor exercise, not afraid of sweating, can also be simply washed.
Iii. Yiou Heping Bone Conduction Headphones
Yiou earsopen, born in Tokyo, Japan, is a brand of bone conduction headphones owned by BoCo Co., Ltd. Yiou earsopen PEACE TW- 1 is the first Bluetooth headset in bone conduction products to realize left-right separation. Because the sound generating unit is relatively small and close to the ear canal, the sound leakage is also very small. This still needs to mention its earphone design, which is the first separated design in the bone conduction industry. The earphone body adopts T-shaped design and is worn by ear clip. Comfort is not as high as the first two models, but this way of wearing is really unique. If you must choose TWS, this is good.