Although the technology that Apple is studying is not new, it is the way it is implanted in headphones and the way in which this technology can be applied to future AirPods. Auditory bone conduction is used to provide audio in a variety of situations where normality does not work well. If bone conduction is combined with air-based sound transmission, we would have excellent quality.
Bone driving has its limits. For example, working at high frequencies.
The conduction of sound through the bones of the ear and head not a flawless system. It has its restrictions, such as high frequencies. At that time the conduction of sound through the air is better. Therefore. Why not combine both in search of sonic excellence?
In a patent granted to Apple Tuesday by the US Patent and Trademark Office under the heading "Multi-path audio stimulation using audio compressors », Apple suggests that problems with bone conduction could be mitigated, in part by supporting standard air conduction methods.
Audio signals are filtered in three categories:
- components high frequency.
- Frequency medium
- Low frequency. Low and mid frequency components are processed with compressors to reduce dynamic range and then combined into a combined component.
Low and mid frequency signals combined would be sent through the user's skull by bone conduction. Those of high frequency by the air. In this way the sound quality would be much cleaner and above all more complete. Furthermore, it is intended that the air conduction system be constructed in such a way that it does not block the ear canal from other audio sources, that is, it still allows the user to listen to the environment.
We could be watching the technology of the new AirPods and why not, of the new AirPods Pro with that new noise and environmental cancellation.
