@Class D used to say that the Class is just a matter of antenna.
So, if he is right, I suppose that if you make something like this miccus and it reaches the 150, it is Class 1. = Class 1 is anything which can reach at least 100ft. So, take a "class 2" device, mod it with a bigger antenna, and if it reaches 100ft, it becomes class 1.
But in this way of seeing it there is something missing. Because the fact that BOTH devices must be Class 1, let me think to some kind of negotiation. Like in Aptx.
Because, if it was just a matter of antenna like Class D says, then, if one Class 1 device can send the signal up to 100ft, it would reach a class 2 device placed within 100ft, so it should be enough that one is class1.
Unless the real definitio of class 1 is "a device which can reach 50ft", so that two together meet at ther limit and make 100ft together.
Which is kind of romantic.
Anybody knows how it really is?
And, as I am in mood for questions and i have eaten too much pizza to be able to sleep:
Aptx is often compared to AAC.
But, how does AAC work?
If I have an AAC headphone and an AAC phone, and I play an mp3 file, will the phone encode the mp3 in AAC on the fly to transmit it to the headphone?
Or will the phone use the AAC codec only if I play AAC files? Which kind of sucks, because it is 3, not 2 conditions: source, receiver, and file...
Cheers