The entertainment factor is geared up with audio and visual effects. Tell me can you think of life without entertainment? That is why life is also incomplete without the presence of audio and video. Audio is the vibration that is transmitted through a medium, that medium can be solid, liquid, plasma or gas. In other words, audio means those vibrations that are made up of frequencies that a normal ear can detect easily.
The matter that supports the sound is called the medium. As I have said before also, sound travels in any medium, but not in vacuum. Audio plays a very important role in our lives. We are able to detect different sounds made by different entities because of their diverse frequencies.
Similarly, video also plays a very important role. It is the technology of electronically capturing, recording, processing, storing, transmitting, and then making a sequential presentation of the still images in motion. Just like a video camera does. It has the role of capturing still images and making a sequence out of it to present images in motion. History says that this technology of recording videos was first developed for cathode ray tube television systems, but with the advancement of technology, the invention transferred to other devices like a video camera, a handy, a mobile phone, etc.
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