GOODBYE! MP3, WE WILL REMEMBER YOU
Did not hear any song. | It is so much more popular that for this reason, a digital audio device named MP3 player is available to buy! But sadly, the MP3 will not be there anymore On April 23, 2017 this year, Fraunhofer IIS announced that they are completely shutting down MP3 completely. That is, the announcement of the MP3 licensed program from now on has stopped completely
History of MP3
MP3 was first developed in 1993, which was originally part of a German research institute Fraunhofer IIS project. Their original purpose was to compress enough audio files because, at that time, the process of transferring large files through the network was not easy. And the MP3 format gave them the opportunity to do exactly that Its huge amount of audio files are easily compressed and sent through the network This is an uncompressed 2 channel audio file whose resolution is 3 minutes and frequency is 44.1 KHz; The place will take a total of 31 megabytes This may not be too much for now, but at that time it was much more difficult And this compression is somehow " lossy compression" , which means that many of the information is cut-off.
How does MP3 work?
Now the question is, how does MP3 do this compression work? As a result, the size also decreases in the moment? A little earlier I said this is a kind of "lossy compression" that can be lost from any information file. But, if the information is lost, then the quality is going to be reduced, why is it not? In fact, there is an important version of the MP3 format!
When this MP3 format converts any original file into MP3, it crashes a lot of parts. And this eliminates some of the unnecessary frequencies for this cut This is the first to encrypt the audio file first and then thereby remove the parts of the frequency band that are outside the audience's audibility. (For those who do not know the human reality for them is 20 Hz - 20000 Hz, if there are no words, people can not hear it!) The logic behind this is that if people can not hear those frequencies then just need to keep them! And, except for this unnecessary part, the lesser the MP3 file!
In another way, the MP3 is working on this compression - "frequency masking" is the method, when we get the same frequency of 2 Frequency that is not identical even with Similar and if one word is louder than another, we can only hear the sound of the louder. Therefore, the MP3 converter does the compression by excluding the lower word for the similare frequency. Because, we can not hear, therefore, what is needed to keep it!
Also, another method is "temporal masking". This method works like this: In the case of a loudder, we can not distinguish the lower word from the word loudar. So, what the MP3 converter does is, it eliminates the words of these lower words at convergence.
Presently, there was no such thing as the current MP3 Converter in the same place The algorithm used for this is very slow The researchers initially applied compression formula in this song for Suzanne Vega's song "Tom's Diner" . However, at that time the conversion was not good at all It was very bad and raucous due to the missing data However, this encourages researchers to create a more new and efficient algorithm And at one time they also get success
However, today there are many effective audio compression algorithms than MP3 Which is better than quality, even when the size is low One of these may be AAC (Advance audio coding) whose extensions are - .m4a, .m4b, .m4p, .m4v, .m4r, .3gp, .mp4, .aac | In many ways, it looks like this format can not reduce its data size even better than quality MP3. However, it is no longer available for all devices
However, we can not run MP3 formats unless we can run it on our MP3 player or computer Rather the situation will be like the VC record or the cassette player that we can run if we want; But, he does not need anymore?
So, in the end, Goodbye mp3 we will surely remember you!