At CES 2017, a friendly company exhibited its new generation of OLED TV A1. The big black technology on this TV is the “screen sound field technologyâ€. As the name implies, the sound is emitted directly from the screen, instead of relying on the sound of a speaker embedded in the perimeter of the screen, like traditional television. In today's post, the IC talks about this black technology and the interesting stories behind it.
Screen sound field technology, English is called Acoustic Surface, literal translation is surface acoustics. It is to rely on the vibration of the display panel to stimulate the vibration of the air and produce sound waves to spread to the viewer's ears. The OLED panel of this TV is dual function of video display and audio speaker.
Various media have mentioned in the promotion of this TV that the source of this TV display can follow the movement of the vocal object in the picture. For example, if a roaring fighter passes over the television screen, the sound of the aircraft engine will also give the audience a feeling of space movement following the flight path. It is also quite exciting to think about it. If this AR technology is supported by major movie sources and game manufacturers, watching movies and playing games at home can also have more immersive sound effects.
After reading the Internet's introduction to this TV with screen sound field technology, IC couldn't wait to go to Suning to look at the real thing.
(Real machine shown at the mall)
Sure enough, when the TV is playing, gently put the handle on the screen, you can feel the strong vibration on the screen. Unfortunately, ordinary movies were played at that time, and the shock effect of moving the audio source to follow the picture was not realized.
After watching the front of the TV and turning to the back of the TV, I saw a scene in which the IC was surprised. Originally this kind of screen sound field technology could greatly reduce the thickness of the TV, but, but, but what is the big tilt support behind the TV? Is this a slim TV?
(The giant bracket behind the TV)
Asked to buy a guide to ask, sure enough, such a big thing is the TV stand, the first to stabilize the role of the whole TV, and the second one hides a bass horn to make up for the low frequency of the screen sound field defects. Hearing here, I feel that this black technology has fallen from the altar, and there is still a considerable distance from the real mature application.
Well, after the darkness of the mood is fair to say, this screen sound field technology OLED TV is still very technologically advanced, here have to worship a friend business. However, after worshipping, think carefully, in fact, the great Chinese people already knew the mystery principle behind this black technology. Look at the crystallization of the people's wisdom on Omnipotent Taobao. . . Before, please help your glasses and your chin.
(Noise artifact Taobao page)
(Noise artifact Taobao page)
We sincerely hope that readers who are looking at the readers do not have the motivation and desire to purchase these "black" technology artifacts. Like the principle behind Sony's screen sound field technology, this noisy artifact also uses resonance technology. By transmitting the vibration inside the machine to the floor, the floor also produces maddening vibrations at specific frequencies. The TV also uses this resonance principle. Behind this TV display, two transducers similar to the speaker diaphragm that can convert electronic audio signals into physical vibrations are hidden, similar to the beamforming of sound waves and electromagnetic waves. Orient this vibration to a specific position on the display panel. When the display panel vibrates, it can transmit sound waves through the air to the audience's eardrum.
When it comes to the principle of resonance, in fact, the big guy is no stranger to it. Another well-known application of this kind of resonance is another friend's full-screen mobile phone, because the full screen cancels the earpiece and instead uses internal piezoelectric ceramics to generate mechanical vibrations and then resonates with the middle frame of the mobile phone. Air vibration produces sound waves. Of course, this vocalization is not made by using a solid surface with a large area, but it is slightly different.
(The principle of the sound of a full screen mobile phone)
In fact, the use of solid surface sound technology is not the first to create a friend. Open up the Internet to search, this kind of product that uses the sound of solid surface abounds.
(The mall uses the sound of the window glass surface)
The above picture shows a mall that installed sound-producing devices on its front-facing window glass, turning the entire window glass into a giant “speakerâ€. When you walk on the street, if you hear the advertisements of a business from a gorgeous window, but you cannot see a traditional speaker speaker, you must not be too surprised to read the IC posts.
In addition to glass, solid materials that can be used for surface acoustics include cement walls, brick walls, wood planks, acrylics, etc., as long as they are not too thick. Think about it. If this technology is popularized, it is full of talking things. When you are walking on the road or tired and leaning against the door of someone's house, a window and a wooden door will suddenly say hello to you. . . Think about it is pretty good (may) Fen (afraid)!
It must be admitted that the courage to achieve the world's first screen-produced television is still very much appreciated. Perhaps the display effect of OLED still needs to be improved. The thickness of the whole machine may need to be controlled. Perhaps the support of this kind of TV with special sound effects also needs the support of all parties. However, there are black technologies beckoning ahead and the way forward. Still worth the expense.
Smart TV/box information can focus on smart TV information network sofa butler (http://), China's influential TV box and smart TV website, providing information, communication, TV boxes, smart TVs, smart TV software, etc. Answering questions.
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