Modulation - Am And Fm

Purpose

To demonstrate AM and FM signal modulation as an introduction to vibrato and tremolo.

Equipment

Dual function generator with loudspeaker and oscilloscope on scope/TV cart.

Setup Time

5 min.

Images

h4-51

Description

The Pasco Dual Function Generator is used to produce either amplitude modulation or frequency modulation using various combinations of sine, triangular, and square waves. Frequency modulation is pure vibrato and amplitude modulation is pure tremolo; actual vocal vibrato is a combination of pure vibrato and pure tremolo

References

An Introduction to Time and Frequency Domain Modulation and Waveform Analysis with Labe Experiments, Tektronix Inc.,Beaverton, OR.