Amplitude Modulation • Amplitude Modulation is a process where the amplitude of a carrier signal is altered according to information in a message signal. • The frequency of the carrier signal is usually much greater than the highest frequency of the input message signal.
AM – Basic Definitions (cont.) The Envelope: The AM Signal
The AM Spectrum Carrier Side Bands
Hands-On • Simulation • Implementation using the DSK6713
The Simulation Environment Virtual Scope Modulator Demodulator Information Signal Demodulated Signal
Real Time Environment PC RTDX DSK6713 CODEC TMS320C6713 AM Modulator A/D (Right) D/A (Left) Signal Generator Line Out Line In AM Demodulator Line Out Line In D/A (Right) A/D (Left) Scope