WEBVTT

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for a while now the word digital has been slapped on so many things that it's

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sort of become a marketing buzzword to convince people that something is high

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tech or better in some way of course most modern electronics are digital by

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definition as opposed to analog but what do these terms even mean and is digital

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necessarily even better for a long time most consumer electronics like

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televisions and cassette decks worked by using analog signals which you can think

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of as being similar to one of those wall blocks with a perpetually moving second

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hand just as the second hand continuously moves to represent the time

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analog signals use some type of thing that's constantly changing to represent

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data for example both AM radio and old school broadcast TV use a signal with a

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continuously variable wave height or amplitude to represent sounds or visuals

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these sorts of analog waves can be decoded or demodulated fairly easily

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with diodes that can relay actual data to a screen or a speaker but as any

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child of the 1980s who grew up watching rabbit ears connected TVs or dubbing

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cassette tapes knows a massive drawback to analog Tech is the possibility of

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interference the variations in waves that encode analog data are so small

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that interference can easily disrupt the analog waveforms and cause snow on your

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TV static on your radio or even problems with monitors that use older VGA C

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cables which are actually analog despite most other modern computer components

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being digital digital technology attempts to solve this problem by

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encoding and transmitting data as clear-cut discrete units namely ones and

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zeros instead of always changing waveforms that are super sensitive to

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interference these ones and zeros are actually just representations of

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electrical signals being on or off when you view it on a square wave that's

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either up or down these positions are easy representations since any piece of

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a square wave can can only be read in one of two states on or off up or down

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they aren't nearly as vulnerable to interference making digital transmission

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normally a heck of a lot more reliable across longer distances which is why the

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length of speaker wire in your home theater matters but the length of a

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digital HDMI cable usually doesn't at least not for resisting interference and

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since Digital Data is stored as an exact finite set of ones and zeros it can be

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perfectly replicated anytime you need to make a copy unlike analog recordings

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that degrade over time due to the difficulty in duplicating an analog wave

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at every single point this is the reason that an MP3 copied to a million iPods

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will sound the same on everyone but a cassette tapes that are copied a whole

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bunch will eventually sound like garbage after you dubb them enough times but

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even though digital has obvious advantages we live to a great extent in

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an analog world take the sound for instance the sound waves that come out

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of your mouth when you talk are analog in nature so how does a singer record

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albums that are stored digitally on say a Spotify server well digital recording

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primarily works by sampling instead of recording all of the infantes small

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changes in an analog waveform an analog

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to digital converter takes snapshots of analog sound or video and stores them as

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digital bits this is typically done many times per second with higher sampling

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rates resulting in more data and usually better quality allowing a digital

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recording to achieve pretty close Fidelity to the original performance

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while taking up much less space on a disc of course since you can't exactly

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hear ones and zeros digital recording sound needs to go back through a digital

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to analog converter or a DAC which will

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convert your mp3 or AAC to an electrical

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signal that has a constantly changing voltage that the drivers in your

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headphones will turn into actual sound so while digital Tech has been

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extraordinarily useful it's really the way way that digital analog work

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together that makes the Brave New World of tweets Netflix and dank memes

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possible speaking of digital things audible.com is the leading provider of

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audiobooks with more than 180,000 downloadable titles across all types of

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literature including fiction non-fiction and periodicals audiobooks are a great

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way to listen to something while you're say in transit on your way to work or

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just trying to run around the track at school and you're super bored and

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whatnot anyways the physical activity whatever at least you

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can listen to a book for our audience members however audible is offering a

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free 30-day trial just check out audible.com tequi and browse there over

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180,000 audio programs I would yet again

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recommend the entire Harry Potter series there's a ton of different gems in there

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and there's going to be the movies coming out in I'm not entirely sure

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which will have more stuff in that realm they're not based on the original series

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of books but they're based on books within the books like Inception books

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maybe I shouldn't reference another movie when I'm talking about a single

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movie either way don't forget to get a free 30-day trial at audi.com tequ don't

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forget to like the video if you liked it dislike the video If You disliked it put a comment down below with something

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you'd like us to check out in the future check out Channel Super Fun they did a video on little mini drones and doing

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cool things I wasn't there for it I wanted to be but I was like literally

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across the entire country so that didn't really work out don't forget to

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subscribe to channel see if you like that video And subscribe to Techquickie

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