Web 5 Audio Audio API and communication technology using ultrasonic sound

ByMikael altemark

There are various standards used when connecting a PC or smartphone to the net or connecting to other devices, such as Wi-Fi and Bluetooth, but it is rather troublesome until the connection setup is finished properly at first Also, there are times when you are bothered by different standards. Boris Smus's approach to approaching from a direction different from the conventional way to say that I can clear out such troubles "Web Audio APIUltrasonic communication using ".

Ultrasonic Networking on the Web | Boris Smus
http://smus.com/ultrasonic-networking/

It is difficult to understand what it is called supersonic "suddenly, but it is briefly summarized in the following movie.

Ultrasonic Networking using the Web Audio API - YouTube


Wi-Fi is off


When you tap an icon on the front smartphone, the icon displayed on the back display changes. This is a state in which data is converted into sound and communicating.



However, it is not very practical to sound every time communication is made.


So I thought about using ultrasound.


If it is an ultrasonic wave, even if a sound comes out, it can not be heard by the human ear, so it is possible to work quietly during data communication. Even in the movie, although you do not hear the sound, when you operate the smartphone the icon displayed on the display has changed as before.



There is no problem even if the distance is a little.



In the case of Bluetooth, pairing of devices equipped with adapters is performed, but in the case of ultrasound + Web Audio API, if there is only an HTML 5 compatible browser and audio hardware, it is possible to pair even without a special adapter etc, so hurdle It goes down considerably.



Enter message on browser side


I called "hey".


Immediately reflected on the smartphone at hand. Once pairing, it seems possible to exchange messages over the net.


By the way, at this time we communicate using Chrome of Macintosh version and Chrome of Android version, and since Android version Chrome does not support live input, data transmission is one way from Android to Macintosh.


There is nothing particularly different from the communication with the current Wi - Fi or Bluetooth because it does not invisibly sound, but will it become a new choice for device - to - device communication?