ocr: FREQUENCY MODULATION In - this type of modulation, SOUND SIGNAL the frequency ofthe carrier varies signal is the changed same sO rate thatit as the T HIGH / - VOLTAGE LOW VOLTAGE at voltage ofthe sound signal. COMPRESSION RAREFACTION Where there is a high INS SOUND WAVE) IN SOUND WAVE) voltage in the sound signal, CARRIER SIGNAL there 1S a high frequency in the modulated signal. FM a 1 . radio stations suffer less TWT TUWT - - - - T from interference, but have to transmit very high MODULATED SIGNAL frequency (VHF) waves. This is because the carrier signal must have a very - = - . Ja . I - I mu ...
(.png)
(Dorling Kindersley).iso/article3/rado/rado1x.dib/rado1x.png)