Headphone wearing detection function
In-ear detection is an innovative feature loved by users in the rapid development of TWS headsets. It relies on the optical sensor to realize the automatic pause / automatic playback function of the removal, which effectively improves the user experience and avoids the problem of power consumption when not in use. However, the in-ear detection function has not been widely used in Bluetooth headsets.
Recently, Sony applied the wearing detection function for the first time on the newly launched WH-1000XM4 head-mounted noise reduction Bluetooth headset. By making a larger opening in the earmuff, it is used to place the optical sensor unit. After the wearing detection function is turned on, the headset will automatically monitor the wearing status, take off the headset, the music will be paused, and the music will automatically play when wearing the headset.
This method of directly opening holes inside the earmuffs to reduce the impact of the dust-proof mesh on the optical sensor has achieved the wearing detection function, but to a certain extent, it sacrifices the integrity and aesthetics of the product appearance. Bare glass devices also increase the risk of product damage.
I love audio network has observed another solution in the market, which can bring the in-ear detection function of the headset more beautifully and directly without destroying the integrity of the earmuffs.
Huayi Technology HY2803 photoelectric sensor uses an internal laser encoding drive chip to drive the internal laser chip with an efficient encoding method. The efficient encoding driving method can directly penetrate the dust-proof mesh, and the optical signal penetrates again after being diffusely reflected by the ear The dust-proof mesh returns to the receiving area of the sensor. When the optical decoding chip in the receiving area receives a valid optical encoding signal, it immediately outputs a level signal to realize the wearing detection function.
From the numerous revelations of Apple’s AirPods Studio noise-canceling headphones, the revelations that support the wearing detection function are run through. And this product will soon be on the market, I don’t know what kind of wearing detection program Apple will bring.
360 live sound effects, SXFI sound flying, spatial audio
The first stereo headset was born in 1958, and then with the development of technology, surround sound was also applied to the headset. Recently, new spatial audio technology has gradually matured and been pushed into the hands of users. This includes Sony’s 360 live sound effects, innovative technology SXFI holographic audio technology, and Apple’s AirPods spatial audio technology.
In layman’s terms, one of the similarities of these three audio technologies is that when we wear headphones to listen to music, we take out the sound of the music we hear in our brain and put it in a fixed position so that no matter how we move and rotate, you The sounds heard and felt come from the same place, making it a live sound experience. With the ordinary earphones we use, the sound you feel is in your brain, at most, it travels back and forth between the left and right ears.
360 Reality Sound is an audio technology introduced by Sony at the 2020 CES International Consumer Electronics Show. It integrates the musical instruments at the concert into a 360-degree spherical space and reproduces the music on the headset according to the determined distance and angle information. In the immersive music, experience to make it feel.
SXFI is able to capture the listening experience of high-end multi-speaker systems in professional studios, and through a sophisticated head-ear model modeling process, it uses computational audio to tailor a suitable sound for each person, and restore nature in the headset A real sound experience. And through an exquisite head and ear modeling process, a series of complex algorithms and intensive calculations are used to customize their own unique sound effects for each user.
Spatial audio is a feature launched by Apple at the WWDC20 Global Developers Conference, bringing new sound effects to AirPods Pro. Mainly by adding a directional audio filter, and fine-tuning the frequency received by each ear, and using the acceleration sensor and gyroscope of AirPods Pro to track the head movement, based on the movement data of the head and the screen relative movement To analyze usage scenarios such as turning of vehicles and tilting of the aircraft’s fuselage, and to continuously remap the sound field position to achieve an immersive audio experience.
These three kinds of sound effects have given us a brand-new audio experience, but they also have the problem of harsh usage conditions and cannot be fully popularized to users. But in the future, I believe that this kind of audio technology that can effectively improve the user experience will come into our lives.