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  What is a Signal?
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 <p style="font-size: 20px;">Something<p>
+<p style="font-size: 20px;">Undoubtedly, you have seen audio signals like the one shown below. In fact, Audio and Radio have many links to each other and the audio signal below could very well have been a radio signal.<p>
 <img scr="https://i.postimg.cc/13xkRc7p/temp-Imagebi-FLjv.avif" style="height: 400px;"></img>
+<p style="font-size: 20px;">If you would have zoomed into that audio signal you would have seen something like the image below.<p>
+<img scr="https://i.postimg.cc/rFgf3GXV/Screen-Shot-2024-08-06-at-10-40-56-AM.png" style="height: 400px;"></img>
+<p style="font-size: 20px;">You may notice that this looks strikingly similar to some sort of sine wave and you would be 100% correct. Every signal can be thought of as a combination of sine waves. Each of theses sine waves has its own frequency, meaning how fast it goes up and down and phase meaning where thee sine wave is centered.<p>
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