AM versus FM questions
Modulation:
We want to travel to signal from one place to another for that we need to strengthen signal so that it can be traveled to long distance.
Difference between AM and FM:
We want to travel to signal from one place to another for that we need to strengthen signal so that it can be traveled to long distance.
Difference between AM and FM:
| FEATURES | AM | FM |
|---|---|---|
| Stands | Amplitude modulation. | Frequency modulation. |
| Origin | 1870. | 1930. |
| Modulating difference | Carrier wave is modulated in amplitude by signal. | Carrier wave is modulated in frequency by signal. |
| Pros and Cons | Poor sound quality lower bandwidth cheaper |
high higher cost is high |
| Frequency | 535 to 1705khz. | 88 to 108mhz. |
| Bandwidth | Twice highest modulating frequency. | Twice sum of modulating frequency and frequency deviation. |
| Complexity | Simple. | Complex. |
| Zero crossing in modulated signal | Equidistant. | Not equidistant. |
Does Amplification and Modulation are same?
Amplifier strengthens the small signal.
Modification mixing of two electrical signal.
Amplitude modulation:
Transmits sound by changing signal strength.
Frequency modulation:
Modulation of radio or other wave by changing its frequency.
Amplitude modulation:
Transmits sound by changing signal strength.
Frequency modulation:
Modulation of radio or other wave by changing its frequency.
Signal:
Conveys information about the behavior.
Carrier Wave:
Modulated with input signal for purpose of conveying information.
