What is frequency modulation?
Q: What is frequency modulation?
A: Frequency modulation is a technique used in telecommunications and signal processing to transmit information over a carrier wave by varying the frequency.
Q: How is frequency modulation different from amplitude modulation?
A: Frequency modulation varies the frequency of the carrier wave, while amplitude modulation varies the amplitude but keeps the frequency constant.
Q: Where is frequency modulation commonly used?
A: Frequency modulation is commonly used in broadcasting and other radio work.
Q: What is the advantage of using FM signals for transmitting analogue sound?
A: FM signals have better sound quality than amplitude modulation (AM) signals for transmitting analogue sound.
Q: Why do FM signals not travel as far as AM signals?
A: FM signals use higher frequencies that do not bounce off the Kennelly–Heaviside layer, which limits their transmission range compared to AM signals.
Q: How do radio stations use both AM and FM signals?
A: Radio stations may use AM for talk shows and FM for music.
Q: What is difference signal in FM broadcasting?
A: In FM broadcasting, the difference signal is included to create stereo sound, causing two different speakers to produce different sounds.
