2 Amplitude Modulation When two musical notes are nearly the same pitch, one can hear "beats" – a periodic rise and fall in the volume of a single pitch. (a) Generate a plot of this phenomenon. Create – and submit – a graph of the waveform f(t) that results from superposition of two waves with similar frequencies. S1) = cos 21 t S:0) = cos 194 Time is measured in seconds. (b) Describe the significant features of your plot. What pitch would you hear – assuming humans can hear that pitch? At what frequency does the volume oscillate? In AM radio, a high-frequency carrier wave is combined with a low-frequency signal wave. The waves are not simply added together. Rather, the low frequency wave is used to modulate the amplitude of the high frequency wave. (c) Create – and submit – a graph of the waveform f(t) that illustrates this idea: 05 cos 201os 20

2 Amplitude Modulation When two musical notes are nearly the same pitch, one can hear "beats" – a periodic rise and fall in the volume of a single pitch. (a) Generate a plot of this phenomenon. Create – and submit – a graph of the waveform f(t) that results from superposition of two waves with similar frequencies. S1) = cos 21 t S:0) = cos 194 Time is measured in seconds. (b) Describe the significant features of your plot. What pitch would you hear – assuming humans can hear that pitch? At what frequency does the volume oscillate? In AM radio, a high-frequency carrier wave is combined with a low-frequency signal wave. The waves are not simply added together. Rather, the low frequency wave is used to modulate the amplitude of the high frequency wave. (c) Create – and submit – a graph of the waveform f(t) that illustrates this idea: 05 cos 201os 20

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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