What is the difference between a speaker and a vibrator?

Both vibrators and speakers are transducers, meaning they transform electrical energy into mechanical energy (vibrations) using a magnetic field generated by a coil resting on a magnet. The difference occurs after the vibrations are created. In the case of the bone conduction vibrator, the vibrations are transmitted to a metal plate while in the case of a speaker, the vibrations are transmitted to a membrane which will vibrate the air to generate sound waves. Many materials can function like a membrane in contact with a vibrator and thus create sound waves like a loudspeaker.

How does bone conduction work?

We speak of bone conduction when the transducer used is a vibrator. When the vibrating metal plate touches your skull, the vibrations are transmitted through your soft tissues and bones directly to your inner ear which transforms the vibrations into an electrical signal which is then transmitted to your brain.

How does air conduction work?

We speak of air conduction when the transducer used is a loudspeaker. The sound wave thus generated will hit your eardrum to make it vibrate. These vibrations are then transmitted through the ossicles of your middle ear to your inner ear which transmits them to the brain.

What is directional air conduction?

A sound wave naturally propagates in all directions. In directional air conduction, the sound wave is directed toward a specific area. There are different technologies for controlling the directivity of waves that are more or less complex and expensive. One technique involves guiding the wave toward the chosen area, much like cupping your hands around your mouth to whisper a secret into someone's ear. This technology involves, on the one hand, appropriate placement of sound in space. On the other hand, the encapsulation material must allow greater reflection of the wave (the wave bounces off the surface of the material) and lower transmission (the wave passes through the material) and absorption (the wave is absorbed by the material). Thus, following the successive reflections of the sound waves, they reach a slot close to the user's ear through which they can escape.


What is Bluetooth?

Bluetooth is the name for a short-range radio frequency (RF) technology that operates at 2.4 GHz and is capable of transmitting voice and data.

What is the range of my Bluetooth?

The effective range of Bluetooth devices is 10 meters.

Why can't I connect via Bluetooth?

Check if you have actually activated the Bluetooth connection on your phone. Make sure your smartphone and your product are close enough to each other. The Bluetooth range is 10 m. Check the recommended pairing process in the user guide. Try turning off your product or smartphone and then turning them back on. Remove unnecessary Bluetooth connections from your phone, some smartphones limit the number of pairings. Stay away from the Wi-Fi router. Your Wi-Fi router may use the same spectrum as the product and may cause interference.

Why does the product disconnect?

Stay within range of your headphones and smartphone (10 m maximum). Remove all unnecessary Bluetooth connections. It could very well be that your smartphone is “overwhelmed” by the number of other devices trying to connect to it. Make sure your product is sufficiently charged. Bluetooth headphones tend to disconnect periodically when the battery is low. Try unpairing your product and then re-pairing it with your smartphone.


What is the maximum safe listening time at maximum volume?

The sound level that the WHO recommends not to exceed is 85 dB for a maximum listening time of 8 hours.


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