Carrier Swing & Deviation Ratio: Clarifying the Definitions

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Carrier swing refers to the total deviation of a frequency-modulated or phase-modulated wave, measuring the range between the lowest and highest instantaneous frequencies. The deviation ratio is related to the modulation index, which indicates how much the carrier frequency varies in relation to the modulating signal. The initial inquiry sought clearer definitions, as online sources were deemed vague. Additional resources were shared to provide more context, including a Wikipedia link and a PowerPoint slide. Clarifying these terms is essential for understanding frequency modulation synthesis.
Lakshmi N
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Can anyone help me to find out the definition of "carrier swing"&"deviation ratio"?

The definitions which i found on surfing the net is too vague.Can someone help me with this?
 
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Is it related to the following?
http://en.wikipedia.org/wiki/Frequency_modulation_synthesis

Edit: Found the following online:
Carrier Swing: The total deviation of a frequency-modulated or phase-modulated wave from the lowest instantaneous frequency to the highest instantaneous frequency.

Also found something here: www.ece.vill.edu/~mobasser/chapter3_FM.ppt (Look on slide 14)

Does any of that help? What specifically were you having trouble understanding?
 
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