Somewhere I read that 3dB is where that the power is reduced by half which is right, but again I read that 3dB is where the power reaches to 70% or 0.707 of its max!
What does the second means really??
It is not matched with the first sentence!?
The other question is that what is the meaning of 6dB per octave?
I even do not know what octave means there?
When the power is -3dB (half), the voltage is reduced 0.707 times and the current is also reduced 0.707 times. Power equals voltage times current so 0.707 voltage times 0.707 current= 0.5 times the power.