The future Of Apple AirPods will be able to detect whether the headset is worn on the ear by air pressure, be more selective when turned on/off, and reduce accidental activation of the headset on a table or other surface. Both AirPods and AirPods Pro now have a feature that allows audio accessories to detect whether they are being worn. By confirming that it’s worn in the user’s ear, each AirPods can choose not to activate music playback when the ear canal is not inserted to save power, and can know if it’s only plugged into the left or right ear, and allow the iPhone to transfer multimedia only to the headset you’ve worn.
AirPods currently use optical sensors and accelerometers to confirm that users are wearing them, but the technology can cause false positives, such as detecting wear-like motion or placing an optical sensor in a pocket when placed.
There are also some wireless headphones on the market will be blocked by the sudden change in gain to detect whether the user is wearing the headset, Apple believes that while this is effective, but the disadvantage is the need for earbuds to achieve airtight sealing, and the effect of the less than ideal seal will affect the low frequency effect, again lead to false positives. Despite its success in the current form of AirPods, Apple believes it can use other technologies to improve sensors.
According to a patent released by the U.S. Trademark and Patent Office (USPTO) on Tuesday, Apple has obtained an “acoustic test for whether a headset device is worn” (acoustic testing of whether a headset device is worn). It is recommended that the air pressure be monitored to detect whether AirPods or other audio accessories are being worn.
It is recommended that the headset confirm before establishing a separate connection between each headset and the host device via Bluetooth. To perform the check, the headset uses a pressure sensor that activates when the earbuds move towards the ear canal.
By detecting the period during and after the earphone insertion, the air pressure sensor detects a change in the ear canal compared to the ambient atmospheric pressure, i.e. air compression in the ear canal. When a pulse is detected from a pressure signal caused by insertion, the earbuds can be considered to need to be activated.
When activated, a tone is used to inform the user that it is turned on and then takes a few seconds to establish a connection to the host device. Apple believes that pressure sensors can be better adapted even when the pressure changes when the earbuds are stored. The patent suggests: “In the user’s pocket, the amount of air is almost unchanged because the air can pass freely through the pocket.” “