Importance of Modulation Factor
Modulation factor determines the strength and quality of the transmitted signal. In an AM wave, the signal is contained in the variation of the carrier amplitude. When the carrier is modulated to a small degree (i.e., small m) the amount of the carrier amplitude variation is small. Consequently, the audio signal being transmitted will not be very strong. The greater the degree of modulation (i.e., m) the stronger and clearer will be the audio signal. If the carrier is over-modulated (i.e., m > 1), distortion will occur during reception.
