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Chapter 1. How Internet Telephone Calls Work > Analog to Digital, Voice to Data

1.1. Analog to Digital, Voice to Data

Analog means many things to different technical disciplines, but to me it means real life. Nature is analog; numbers are digital.

We speak in analog, because sound waves are continuously fluctuating and naturally created. Remember the graph of a sine wave you saw in school? Figure 1-1 shows how the sine wave looked then, and still looks today.


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