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What is decoding in communication ?

Communication system under telecom

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Wojciech’s Answer

Decoding in communication is the process of interpreting and converting an encoded message into a meaningful form by the receiver. In telecommunications, it involves transforming transmitted signals, such as digital or analog signals, back into their original format. This process occurs after the message travels through a communication channel like radio waves or fiber optics. The decoder ensures the transmitted message is comprehensible by the receiver, whether it’s text, voice, or video. It often includes error detection and correction to handle noise or signal degradation during transmission. Accurate decoding is essential for successful communication in systems like mobile networks, internet communication, and broadcasting. Without decoding, the transmitted information would remain inaccessible or unintelligible to the receiver.
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Barry’s Answer

Hi, Deo!

Thanks for reaching out. I’m not sure if this is exactly to what you are referring, but I know that when it comes to playing a video, the mechanism that plays it (ex: VLC Media Player, QuickTime) has to decode the information. The audio and video is coded, and then the player decodes it.
Therefore, the format is which the video is coded is called its CODEC, which is short for code-decode. In video, common codecs would be ProRes 4:2:2, XD Root, and XAVC.
It’s akin to there being different ways to power a car - a combustible engine or an electric battery. The car can move either way; it’s just a matter of how it happens.
Formats are often (though not always) proprietary to the company that manufacturers the camera in which the video is shot.
I’m not sure if this answers your question, but it’s the best I can do!
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Shane’s Answer

Great response, I totally agree! My initial thoughts also leaned towards the process of converting analog to digital (A to D) for decoding. It's similar to encryption, only that requires a security key to decode it, which adds an extra layer of protection.
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