Yantai Yatai Photoelectricity Equipment Co., Ltd.

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'HDMI' cables, 'Blu-Ray' players, 'Hi Fi Separates'

by:Yatai     2020-04-30
Well, you could be forgiven to be honest. AV systems have gone far, far beyond simple devices for home entertainment. With the growth of DVD players, mp3 players, streaming video services and even (ironically) wireless technology, it's not uncommon to see living rooms dominated by a bewildering amount of cables linking dozens of devices into the vaunted 'Home entertainment system'. With each new gadget or improvement to existing technology there has come a new piece of terminology, a new type of cable or a new standard of interface. In short, it's confusing. Working out what everything means is no easier than unwinding the myriad cables when they inevitably become tangled in a death grip. Thankfully though some of these things are unlikely to be needed for anyone but a professional - unless you're a dedicated hi-fi enthusiast or audio/videophile, don't worry too much about what you don't get. As a rough guide, here are some of the more accessible areas of terminology that should let you keep up with the conversation in Dixons or at the very least understand what it is you're looking at: Video/Entertainment/Hi-Fi 'Separates': Something you're bound to think is more complicated than it really is, 'separates' just refers to the separate elements of a system traditionally bought as a package. For example, a hi fi separate could be a speaker, a cable, an amplifier - you get the picture. HDMI: A 'high definition multimedia interface' is, simply put, a way of linking digital audio/video sources to compatible devices. It gives a much higher video quality - the eponymous 'high definition' - because it doesn't require the data to be overly compressed for transmission. Sub-Woofer: A speaker that is dedicated to the lower pitched audio frequencies; in short, this is the 'bass' of any audio system. Generally larger than other speakers in a system, the sub-woofer serves the 35-200 Hz frequency range for consumer products. Blu-Ray: In the simplest terms, this is the next best form of video format - the successor to the DVD throne. It benefits from a theoretically open-ended storage limit (though this depends on the reader capabilities: 100gb discs can be read by any Blu-Ray player) and derives its name from the blue-violet laser used to read the discs. The bigger capacity - at least 25GB - allows for video to be stored at a lower compression, retaining a higher quality. 'RGB': A little outdated, this literally stands for Red Green Blue. It's an older form of video input/output, based on the human perception of colours in the eye. Effectively the three primary colours overlap in different ways to produce pictures. In creative circles, it's still a heavily used principle and term - but the average consumer will no longer need to worry about the old connectors such as SCART that have been replaced by new developments.
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