What actually happens when I connect to my phone to my bluetooth speaker? I’ve always just assumed it’s some frequency emitted, but how does the frequency get emitted? What is the actual mechanism, And how does my phone know where to shoot that frequency?
Does it send out a constant omnidirectional pulse? Or does it establish a target after an initial omnidirectional pulse to find the speakers location, then switching to some honed in direction? Because that would explain the degradation in sound quality when I move my phone quickly.
Is it a vibration of the air in its varying amplitude and frequency that gets picked up by the speaker, and sent to some decoding mechanism that relates the frequency into sounds? What physically vibrates the air (if that’s whats happening), and if so, how can wireless signals be transmitted over such long distances, satellites for example?
Is it just down to it being so tiny and high energy? Is there a little arm inside the devices that flaps so quickly and forcefully that it can push little atoms into my speaker?
In: Technology
It’s sent in the same manner as a traditional radio or television transmission. Apply power to a transmitting aerial, where the power is varied according to the contained signal, and a suitable receiving aerial picks it up.
It doesn’t move the air, this takes place in what’s referred to as the electro-magnetic spectrum.
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