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Data and MP3 Compression: Why Do We Compress?

In the last article (Data and MP3 Compression: Understanding “Digital”), I explained what a “digital” signal is. Remember, data can be stored as raw, or “analog” signals (like cassette tapes, VHS, or records) or they may Холодильники LG be digitized (converted into a series of 1’s and 0’s) which we can later convert back into its raw format. Digitizing signals allows us to store information in an errorless format. So why don’t we digitize everything? The answer is simple: It takes a lot of 1’s and 0’s to represent the shortest songs, videos or movies. A standard 5 minute song can take over 70MB (which is Отопительные котлы 70 mega-bytes; each byte is made up of 8 bits or 1’s and 0’s). That is 560 million 1’s and 0’s! That is a lot! Not only do you have to seneca cigarettes free shipping store all of that information, but we need to process it and convert it back to its analog signal in a short amount of time.

Luckily, fast Водонагреватели Atmor processing has been around for some time now and formats such as CDs have taken advantage of this. But CDs are limited in space: about 700MB (which <a href=”http://a
rtmam.net/Real_Estate_Auction_Boston-7.htm”>commercial real estate auction fees in Massachusetts will hold about 10 songs). The space issue definitely became a problem. That is when compression techniques were first introduced. How Холодильник Атлант compression works is that we take the 70MB signal (as we described above) and by using either a mathematical algorithm or map, we can organize the bits in such a way that less bits are required to store aquatic aerobics charlotte nc the same amount of information (My next articles will cover the details about this a bit more).

For example, with MP3 coding, we can reduce a 70MB song down to below 5MBs! (That is a микроволновые печи Samsung 92% reduction in size!). Now understand this, though: Compression theory itself has been around much longer than MP3s have been sold. Why? It gets back to the technology question posed above. We have now reduced the storage size of the song, but in order to decompress the signal requires a lot more signal processing in the same amount of time.

I remember value city furniture discount coupons about 7 years ago having to buy a big internal computer hardware card to fit inside my computer to watch DVD’s from my new DVD-ROM. Why? DVD data is coded in an MPEG-2 format (similiar to MP4). At that time, computer processors were not fast enough to process the decoding. Now computers Bosch WLX 24360 OE are fast enough to process the data with software.

Just in the past few years early childhood music in boston have the two technologies now collided. MP3 and MP4 players are now a reality for a variety of reasons:

1) Advanced compression techniques have made file sizes even smaller than ever.

2) Storage chicago discount appliance parts hardware has increased into the 100s of GB range in a very small package.

3) Processors are small enough, fast enough and cheap enough to fit into the palm of your hand.

So where does technology go from here? MP4 (or video compression) is building momentum. Still, it is in its infancy and it is still lacking in the necessary storage and processing requirements it needs to produce the sharpest and clearest video quality that we are now coming to expect.

Motivation By A Challenge

Many humans are motivated by the thought of doing something they or others think they cannot do. They don’t want to do what they already know they can do.

When I studied Taekwondo, most of the best students were slim, flexible and young. I was thickset and definitely not flexible! I was also over forty! The instructor asked me with some curiosity why I had decided to do something which did not really suit my physical makeup.

I replied that there was no point in doing something I was already good at or likely to be good at. I wanted a challenge. This answer seemed to make sense to him.

People climb mountains because they are big challenges and when they reach the top they will feel they, too, have grown in stature. Jim Rohn, the great American self-help guru, tells us to make a million pounds not so much for the money but for what making a million will make of us.

In the Contender reality show where sixteen middleweight boxers are pitted against each other, the prize is a final fight at Caesar’s Palace in Nevada. The winner will be given a million dollars and the glory of beating their competitors.

Some of the boxers used strategy to try to win the prize. They wanted to face the weaker boxers so that they would stay in the competition and would suffer fewer injuries. They were regarded as cowards by some of the others who proudly or recklessly chose to face the toughest boxers on their route to the top.

In the week when only 8 boxers were left, Joey Gilbert was thinking about fighting Anthony Bonsante who had an injured hamstring and was therefore vulnerable.

Jesse Brinkley was disgusted with his attitude:

“Do you want everything given to you?”

Jesse even went so far as to accuse Joey of cowardice. But then he had managed to accuse nearly everybody except himself of cowardice! Was this his strategy?

In fact, Jesse had been planning on fighting Bonsante himself. He decided to win the weekly challenge so that he could decide who w

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