The discussion revolves around the concept of modulation, specifically focusing on its meaning and the different types, such as amplitude modulation (AM) and frequency modulation (FM). Participants seek clarification on the definitions, differences between the types, and criteria for choosing a modulation type.
Participants have not reached a consensus on the definitions or applications of modulation types, and multiple questions and uncertainties remain regarding the selection criteria for modulation.
The discussion lacks specific examples or applications of modulation in practice, and there are unresolved questions about the criteria for choosing between AM and FM modulation.
at first i want to now what is the fm modulation and the am modulation and what is the difference between both and how can i choose the type of the modulationJoAuSc said:You need to give us a lot more information before we can tell what you're asking for. Where did you hear about "modulation"? Is it in reference to "amplitude modulation" or "frequency modulation", both of which describe ways information is encoded in radio waves?
JoAuSc said:Let's say the signal we want to transmit is [tex]s(t)[/tex]. AM modulation is the following:
[tex]s(t) A \sin(\omega t)[/tex]
Here [tex]\sin(\omega t)[/tex] is the carrier signal, [tex]\omega[/tex] is its angular frequency, [tex]A[/tex] is a constant, and [tex]t[/tex] is time.
FM modulation is the following:
[tex]A \sin(B s(t) t)[/tex]
[tex]B[/tex] is a constant, and the other variables are the same as they were above.
I don't know the specifics of how these are used in radio.