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Facts About Sound Leakage of Bone Conduction Headphones and Are There Bone Conduction Headphones with No Sound Leakage?

Dec 16,2022 | Sylvia

Bone conduction headphones are becoming more and more popular, they are a healthy, hygienic, safe way to enjoy music. But they also have some shortcomings, such as their sound leakage problem, which some people think is not good for privacy protection. So are there bone conduction headphones with no sound leakage?

Are there bone conduction headphones with no sound leakage?

Absolute non-sound-leakage bone conduction headphones do not exist. All bone conduction headphones have the problem of sound leakage, but the severity of each one is not the same. Early bone conduction headphones generally have obvious sound leakage problems. Later, with the advancement of technology the problem of sound leakage is gradually solved. For some recently launched products, the problem of sound leakage is solved very well. In normal social distance, others can not hear the sound of the headphones at all. Wissonly Hi Runner are a representative of this type of headphones. Almost 90% of their sound leakage is solved, which is almost equal to they having no sound leakage.

How to reduce the sound leakage of bone conduction headphones?
To reduce the sound leakage of them, we must first know why they leak sound. The main transmission medium of them is bone. But when the sound unit vibrates, thet will touch the air and will also bring the body of them vibration. Their body also touches the air, so the air is driven by the bone conduction sound unit and the body to produce vibration, which emits sound. This is the source of the bone conduction sound leakage phenomenon.

Although there is no way to completely solve the sound leakage of bone conduction headphones, there are still some ways to reduce the sound leakage. The first way is to reduce the air vibration caused by the vibration of the bone conduction sound unit. The air sound caused by the vibration of the sound unit can not be transmitted through the sealed, non-hole, fully closed body design. Secondly, through the cushioning design of the headphones body, the vibration of the body is reduced. And soft and elastic materials such as silicone and can be used as the surface material of the body.

In recent years, the solutions to bone conduction sound leakage reduction are mainly the above two methods. Some manufacturers have made a lot of efforts in these two methods, and finally achieved a good effect on sound leakage reduction.

What are the recommended bone conduction headphones with low sound leakage?

At present, there are not many bone conduction headphones with relatively small sound leakage on the market, and only a few brands with core technologies in the field can have good performance in sound leakage reduction. At present, there are very few brands that have small sound leakage and good sound quality at the same time. I recommend two brands: wissonly and Aftershokz. Their flagship product are leaders in the industry. Let's take an inventory of these two headphones.

Wissonly Hi Runner bone conduction headphones

Wissonly is the fastest growing brand this year, the main reason is that its products are better in sound quality and sound leakage reduction, and that it is recognized by consumers for its excellent products. Its team began to engage in research and development in the field of bone conduction 10 years ago, and the deep technical accumulation is the guarantee that they can do a good job in products.

Hi Runner bone conduction headphones are also equipped with directional vibrators, which have been structurally optimized to increase their vibration area by 35% compared to common bone conduction headphones. At the same time the direction of sound transmission is also optimized to make music more spatial sense. In terms of sound leakage, their fully closed leakage reduction technology is very useful,they uses a closed one-piece body without holes, and silicone cushioning material wraps the body. Thus it can effectively reduce the sound leakage by 90%.
The body of Wissonly Hi Runner is made of high-tech, hypoallergenic silicone material, which does not contain chemical ingredients to avoid allergies. Wissonly Hi Runner feel silky to touch like baby skin, avoiding uncomfortable while wearing for a long time. They use Bluetooth 5.0 chip, Bluetooth connection is more stable. In particular, their waterproof level reaches IPX8, so they can work normally in rain, swimming and diving. They also has 32G memory, you can use them as an MP3 player when there is no mobile phone signal.

Aftershokz Openrun Pro bone conduction headphones

OpenRun Pro are not much different from the common bone conduction headphones in design. They all adopts the hanging ear design, which can ensure a stable wearing experience in sports. Their body frame is made of titanium alloy,so it can adapt well to various head shapes, and is not easy to fall off when wearing them. OpenRun Pro are small, its’ weigh is only about 29g. So They are easy to wear for a long time. However Their IP55 waterproof ability is relatively average.