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RESEARCH PRODUCT
Mechanical models of amplitude and frequency modulation
L BellomonteR M Sperandeo-mineoIvan Guastellasubject
PhysicsPulse-frequency modulationstudentMechanical modelsAcousticsPendulumGeneral Physics and AstronomyVariable lengthAmplitude modulationAmplitudequantum physicsModulation (music)physicFrequency modulationdescription
This paper presents some mechanical models for amplitude and frequency modulation. The equations governing both modulations are deduced alongside some necessary approximations. Computer simulations of the models are carried out by using available educational software. Amplitude modulation is achieved by using a system of two weakly coupled pendulums, whereas the frequency modulation is obtained by using a pendulum of variable length. Under suitable conditions (small oscillations, appropriate initial conditions, etc) both types of modulation result in significantly accurate and visualized simulations.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-03-23 | European Journal of Physics |