How Do Wireless Bluetooth Bone Conduction Headphones Work and How About Their Advantages
Apr 04,2023 | David
This is an era of frequent disasters, but also an era of heroes. At the scene of emergencies such as earthquakes, fires, and floods, there are always respectable firefighters who are desperate to save lives. Various equipment enters the rescue scene with firefighters, among which communication equipment is the most important. The harsh environment of the rescue site is a huge challenge for firefighters to communicate.
To solve this problem, people have equipped firefighters with a new communication artifact--tactical wireless Bluetooth bone conduction headphones to help firefighters listen to clear instructions in noisy and harsh environments, so that they can accurately and quickly reply to information. Tactical wireless Bluetooth bone conduction headphones relatively bulky. Based on the same principle of sound transmission, engineers have developed this type of headphones for ordinary users. In the past two years, they have become a phenomenon-level earphone product and are very popular among young people.
What are wireless Bluetooth bone conduction headphones?
Bone conduction headphones are earphones that "attach the sounding unit to the temple and other parts, convert the sound into mechanical vibration by the sounding unit, cause the bone to vibrate through the mechanical vibration, and conduct the sound to the auditory nerve from the bone". Simply put, wireless Bluetooth bone conduction headphones are headphones that use human bones as the sound transmission medium.
Wireless Bluetooth bone conduction headphones are a new application of mature technology. Its technology is widely used in the military, fire protection, hearing aids, and other fields. Daily listening to music is a newly expanded application field of bone conduction earphones. However, it is foreseeable that the field of listening to music will make wireless Bluetooth bone conduction headphones more popular.
How do wireless Bluetooth bone conduction headphones work?
To understand how wireless Bluetooth bone conduction headphones work, you need to understand how the ear works.
The ear is divided into the outer ear, middle ear, inner ear, and auditory nerve from front to back. The outer ear is what we call the part of the ear that is visible from the outside. When sound enters the outer ear, it travels directly to the eardrum, and the sound that hits the eardrum vibrates the air in the middle ear like a drum, causing the air to vibrate and travel to the cochlea of the inner ear. Shaped like a snail, the cochlea contains lymph fluid and sound-sensing cells called hair cells. The vibration of the eardrum causes the lymph fluid and hair cells in the cochlea to vibrate. Hair cells convert this vibration into an electrical signal and transmit it to the auditory nerve. The auditory nerve carries the electrical signals received from the hair cells to the brain. The center of the brain processes the electrical signals it receives, resulting in the sounds we hear. This way of transmitting sound is the way of air conduction. Our common headphones use air-conduction sound transmission, but the working principle of wireless Bluetooth bone conduction headphones is completely different. It uses bone conduction sound.
We can compare the difference between these two sound transmission methods:
The sound transmission path of air conduction headphones: outer ear → eardrum→ middle ear → inner ear (cochlea) → auditory nerve → brain
The sound transmission path of wireless Bluetooth bone conduction headphones: temporal bone (skull) → inner ear (cochlea) → auditory nerve → brain
Compared with air conduction headphones, the sound transmission path of wireless Bluetooth bone conduction headphones does not have several steps of "outer ear→eardrum→middle ear". When using them, the sound conduction process is that the sound source vibrates and directly transmits the sound to the inner ear (cochlea) through the skull. This working principle also makes the headphones do not need to be inserted into the ear, which better protects the ear canal and eardrum. Moreover, it brings many advantages
What are the advantages of wireless Bluetooth bone conduction headphones?
First of all, because they use the principle of bone conduction to transmit sound instead of air conduction, most wireless Bluetooth bone conduction headphones do not affect the acquisition of ambient sound by both ears when used. Therefore, it is very safe when you use it outdoors, and you will not ignore the possible dangers because you are immersed in the music when wearing it.
Secondly, because most of the them are close to the hard bone position (beside the ear), instead of directly blocking the ear canal like in-ear headphones, or clamping the soft tissue of the ear like clip-on headphones.After wearing wireless Bluetooth bone conduction headphones for a long time,ear damage cause of Headphones is much less than in-ear headphones or clip-on headphones. For example, if you wear them for four hours, clip-on headphones may cause your ears to hurt unbearably, but even if you wear wireless Bluetooth bone conduction headphones for a long time, you will basically feel nothing. Therefore, they are very comfortable to wear.
On top of that, common headphones can clog the ear canal, leading to the growth of a lot of bacteria that can lead to ear infections. Wireless Bluetooth bone conduction headphones do not have these effects because they do not need to be worn in the ear, and they will not rub against the external auditory canal when worn. So they are more suitable for people with oily ears, otitis media, small ears, and some people with sensitive ears because they do not need to be inserted into the ears. They are also more suitable for people who need to wear headphones for a long time. Therefore, wireless Bluetooth bone conduction headphones are very healthy.
Wireless Bluetooth bone conduction headphones have relatively little hearing damage, because hearing damage generally occurs in the eardrum and inner ear, while wireless Bluetooth bone conduction headphones directly bypass the eardrum to avoid eardrum damage. Moreover, the vibration waves of them are relatively moderate, and the impact on auditory hair cells will be less, so the damage to hearing caused by them is minimal. For these reasons, wireless Bluetooth bone conduction headphones have become very popular these years.
Of course, wireless Bluetooth bone conduction headphones are not perfect, and they have their drawbacks.
The first is that the sound quality is not as good as traditional headphones because of its wearing method. Due to its design characteristics, the anti-interference effect is not ideal in noisy environments such as shopping, taking the subway, and taking a car. Because it is transmitted to the ear ossicles through the skin and skull, so their degree of music reproduction is not as good as traditional in-ear headphones.
The second is that the phenomenon of sound leakage still needs to be overcome. If there is a common problem with wireless Bluetooth bone conduction headphones, it is the problem of sound leakage. Although major manufacturers are trying to improve the sound leakage, judging from the actual status, sound leakage still exists in the headphones. Of course, mainstream wireless Bluetooth bone conduction headphone brands, such as wissonly and Aftershokz, have made a lot of efforts to improve the sound leakage of wireless Bluetooth bone conduction headphones, and have almost solved the sound leakage problem.
Bone conduction headphones are becoming more and more popular among young people,and more and more brands join this field.So, which brand is the best?In my opinion, those brands that have accumulated technology in this field are trustworthy.Below, I have sorted out some good Bluetooth bone conduction headphones brands, and recommend them to you. I hope they can help.
1. Wissonly Hi Runner wireless Bluetooth bone conduction headphones
Wissonly bone conduction vibration unit optimization technology is one of the best technical solutions in the industry, because their team has accumulated in the field of bone conduction for 10 years, which is highly respected by people in the industry in terms of product quality and hearing protection.
Once, there was a saying that the sound quality of wireless Bluetooth bone conduction headphones was average. However, Wissonly Hi Runner refreshes this knowledge. It is excellent in sound quality. It uses a 360-degree bone conduction vibration unit, which can increase the vibration area by 35% compared with traditional wireless Bluetooth bone conduction headphones. Moreover, its loss of bone conduction sound transmission is lower, making the sound more shocking and powerful.
Wissonly Hi Runner has added a number of innovative features to make wireless Bluetooth bone conduction headphones better integrated into many scenes in life. It supports IPX8 diving waterproof, which is very good for me who loves swimming. What's crazy is that it can still work normally under 20 meters of water! It also has 32GB of memory, so it can play music even if it is not connected to a mobile phone. I basically use it as an MP3 player, and I don't take my mobile phone for running at night. It uses the Bluetooth 5.0 chip, and outdoor activities can make the connection more stable.
In terms of appearance, Wissonly Hi Runner adopts classic black color, and its simple appearance involves matching whatever clothes you wear in any scene.
2. Philips A6606 wireless Bluetooth bone conduction headphones
Philips A6606 bone conduction sports headphones has a unique night light design, which can help the wearer solve the problem of sports safety in dim environment. It is equipped with Bluetooth 5.2 technology, with an effective distance of up to 10 meters. It has low power consumption, faster connection speed, higher security and stability. A6606 can last for 9 hours on one time charge, which can fully meet the daily needs of users. That is, its waterproof level is not high, it can't be used in swimming, it doesn't have built-in memory, and it can't be used without Bluetooth.
3.AfterShokz OPENRUN PRO wireless Bluetooth bone conduction headphones
AfterShokz Openrun Pro's headphones are very light, weighs only 26g. It's very light and comfortable to run on your ears. The whole machine is made of titanium alloy, and the headphones on both sides are wrapped with skin-friendly silica gel, which make it has a IP67 waterproof grade. It can be drenched in the rain, splashed with water and washed, and there is no problem even in bad weather during outdoor sports. The structure adopts the back-hanging design and can't be worn in the ear, which is very friendly to users who often wears it. The whole machine is also equipped with Bluetooth 5.0 three-core chip, which can realize fast connection, stable sound quality connection within 10 meters, and intelligent identification by algorithm, which can effectively filter the ambient sound and make the voice clearer.
4.Earsopen SS900 wireless Bluetooth bone conduction headphones
The SS900 headphones are equipped with a bone conduction miniature vibration unit inside the body, which reduces the weight of the body and improves the performance of low frequencies, allowing a wide range of sound. With the help of PreciseAir 3.0 integrated technology, the internal parts of the body are simplified and the sound leakage is reduced. It has IPX7 level waterproof,can be use while rainning but cannot be used underwater for long time. Its 5.2 Bluetooth version makes the connection more stable. It also supports Type-C charging mode, there is also a fast charging mode.
The overall performance is good, but there are obvious shortcomings at high frequencies, and there will be harsh sound phenomena.
5 Nank Runner CC3 wireless Bluetooth bone conduction headphones
Runner CC3 are equipped with the latest Bluetooth 5.3 chip. They can achieve stable connection during exercise, and even when you are running in the mountains with poor signal, there will be no disconnection with them.
They are also equipped with MP3 mode with 4G built-in memory, which helps you to enjoy music when the phone is not with you. The Runner CC3 weight 28g, and is compact and very comfortable to wear.
Among the several bone conduction headphones recommended above, Wissonly and Aftershokz are the two products with the best overall performance, both in terms of sound quality, safety, comfort and sound leakage reduction.Considering the cost performance ratio, Wissonly will be better and worth recommending.