What is the speed of the video stream. The more information you see, the greater the quality
The triumphant progress of the MPEG-1 Layer 3 sound recording format (in space, taking away the MP3 designation) is explained by the fact that the proponations are simple and efficient way compression of sound files, which allows saving up to 12 years of pleasant quality music on a standard CD-ROM disc.
To put it simply, the MPEG-1 Layer 3 algorithm is based on the method of the so-called "psychoacoustic" compression, if frequencies are turned off in the spectrum, which are not perceived by the ear, and equal loudness. "Cleansings" in this way, the spectrum is divided into a number of blocks (frames) of the same triviality, and it seems to be squeezed to the tasks of the powerful. When the signal is created, it is formed from the sequence of decoded frames.
This is a compact media player, created by a programmer under the name "Gabest". Save audio data without changes, changing the file to half its size. In order to transfer to the old buti on noses, such as the Internet, the sound is becoming more and more digitized and compressible. Tse those that are negotiable with each file.
None of the daedals are more likely to be digitized and saved and transmitted in digital format. Tse may be low, the most important of these is the cost of spending the amount of digitized data in the first hour of transportation or the first hour of processing on a new one. Іsnuyut also deyakі vnutrіshі nedolіki numerical character, zokrema, spend the accuracy of the hour of passage from the analog world to the digital world. Really, between the necessary accuracy, sound fixed by the boundary of the final primach of the center: the eye for the image, the ear for the sound.
The step of squeezing lies in the parameters of the audio stream, which must be taken on the output after decoding the file.
The main parameter that determines the quality of the sound and the degree of compression, acting like titles (what is it) bitrate- Width of smog bandwidth, which is measured in bits per second.
What is the greater showman, tim better quality the sound is less constrained. So, in practice, all MP3 files are recorded in stereo mode with an encoding frequency of 44 kHz and a depth of 16 bits, initial factors pure sound stayut: dzherelo record, zastosovuvany codec and obreniy bitrate.
The very last instrument of the human being will sing us the most in this file, the shards of which are mainly occupied by digital pressure sound. Saving information and separating the capacity. In professional studios and in modest home studios, little is known about the amount of information that is saved on a hard disk. Stations work faster, and єmnіst hard drives a thousand times greater, lower the roar of that, that you respect for the better, save more, lower you need. place, how to record your musical records, є kіlka applied.
The word codec is approved by the same coder+decoder. This is a software module that allows you to encode or decode files, sound or video to the proper algorithm.
The average value of the flow of 256 Kb / s ensures a compression ratio of approximately 6: 1, the lower values of the compression steps change proportionally. Thus, at a rate of 256 Kb/s, you can burn music from six great Audio CDs onto a CD, and at a rate of 128 Kb/s, from twelve sound music discs.
First of all, we know on the Internet that audio files have a few megabytes, more than their fair value. Tse became possible for the digital grip. Mi explainable different ways the continuation of the embossment is surprising, which type for the choice of embossing in the fallow in the context.
Global squeezing algorithms. You, obviously, know about the “non-ruining” embossing formats. Skladnіst stisnennya, vіdoma іnforatіtі, є її part. The main power of the algorithms that do not collapse, those who after decompressing the file suvoro zbіgaetsya with the file before squeezing, there is no need to waste information. file number of bytes sequence input. Tse create those that are called a dictionary, the index of which is brought up to these bytes, which are repeated. Let's replace the algorithm with the same file with codes that take less time.
To drive the value of the bitrate, which ensures a good sound quality, which confirms the quality of the Audio CD creation, sharpen innumerable superechki among amateurs and professionals.
Deyaki respect sufficient The rate is 128 Kb / s, others are satisfied with the maximum value of the stream - 320 Kb / s. Imovirno, mum ration and tі y іnshі - the difference is only in what is written and in some minds is realized.
You often know the words "stisk", "destructive", "sound", "file" in tshomu wi. Tse make it easier for the robot with a non-ruinous pressure. Without going into other reports, you should know that it can be condensed in a reasonable and foldable way, lower Huffman algorithm, which optimizes the coding of data, shards of coding the most part of the word with the shortest possible code and save on one bit the code 1 for example, it is possible to encode a word, similar to "operation", as it is used more rarely in the text, in 10 bits.
The value of the bitrate, with which the sound is encoded, is indicated on the CDs. For example, the entire collection of music by the Beatles team can be obtained on three discs with a bitrate of 128 Kb/s or six discs with a bitrate of 256 Kb/s.
It dawned on me that in another time the purchase will be more expensive, and even better.
The cost of algorithms that are not recognized for audio. Exchange wild algorithms. Let's talk about the ones that make us cry the most: sound. We took the butt of the text, and it was especially handy, for that which type of medium can avenge a lot of repetition, that wine can easily be squeezed. even more subtle nature of the sound rarely allows you to know the truth of repetition in the new, shards of spreading the sound along Fur'e surrounds us in a vipadkovo cleanly. periodic signal, but really, the sound whine is repeated so very suvoro.
Behind this rule, the sounds that are generated by the basic generators, through software security chi virtual synthesizer. Navіt at the time of a real synthesizer, the sound changes insignificantly and untransferred, as if in an offensive butt. Recording of the rest includes sound stability of analog synthesizers and sound display background noise. Two sounds may have the same length from a clear, uncompressed files may have the same size, 862 KB. Prote difference in the savage vipadka is even more obvious: in times of recording sinusoidal wheezing, we may have a more stable sound on the right.
How does music sound in a car of industrial vibrancy, at 192 Kb/s to provide enough clarity to the sound, you won’t feel the best through third-party noise. For listening on a computer or a stand-alone player ( MRZ-player) accepted stream 256 Kb/s.
And from where the signal without change is on old priy it is displayed on high-capacity speakers, and the maximum possible flow rate is 320 Kb/s. Vyhodyachi s rehabilitated mirkuvan, universal can use 256 Kbit / s: with a high rate of wine recording, ensure adequately in the majority of vipadkiv.
To that, those that need to be saved are the difference in efficiency as a function of the sound that inspires coding. On the other hand, the squeezing coefficient does not reflect the effectiveness of such algorithms on sound through the periodicity of the output signal; Zvernemosya now, for example, yogo folding. Mite on uvazі, scho іsnuіє impersonal algorithmіv, spetsifichnіchnyh for tshogo type іїїв, wanting to stink less vіdomі.
From one side, the most effective of all the guessing of non-ruining algorithms, and from the other side, squeezing from this coding machine, it’s shvidko. The reason is simple: the sound is too periodic, it can be assimilated to text file, in which it would be possible to copy hundreds of times one and the same paragraph. However, regardless of the pressure, audio files, like before, are too great for voicing in singing contexts: when voicing such files via the Internet, digital channels transmissions, such as cable television. Another type of grip: Ruyuchy grip.
For broadcasting music via the Internet, the maximum flow rate is 128 Kb/s. At the same time, the sound of the “yak bi” sounds like a bad thing.
Record popular music with a bitrate of 192-256 Kb/s there is no sense: dogs do not live long, such records are often not updated high quality. Zreshtoy, you can dance and under the sound of "tape recorder" likeness.
Let's take a new butt of the front paragraph. Pilot fluff, which is like an analog synthesizer, is accompanied by background noise, and basically this background noise makes the file unique, so it's important to squeeze it. True, for the purpose of the noise is absolutely chaotic sickness. Therefore, we cannot know two of the same appearances in such a signal. How to save inappropriate information in the sound file?
Behind these signs, there is a ruinous embarrassment. It also uses a fragment of destructive embossing formats. It looks like I can change the quality for one and the same file. On a small scale, nobody needs royalties! The reason is that the hour to calculate the necessary decompression of such a format is great.
Zovsіm іnsha on the right classics and rіdkіsnі author's creations. Moreover, under the classics of the world, it is no better than Bach and Mozart. Today's classics can include The Beatles, Led, Zeppelin, Visotsky, Tsoi, and many other authors (vikonavtsiv).
If you didn't pay attention to the bitrate shown on the package when you bought the CD, you can see the value in the order of the file being played.
One of the most powerful powers in the middle is quiet, which is not for the “coding of mari”, it is the technique of masking. Threshold, in which a human ear perceives sound, the great world lies in the frequency of sound, for example, we can perceive a richly light sound at a frequency of 4 kHz, lower for 50 Hz or 15 kHz. Moreover, at 25 kHz, regardless of the sound, the human ear no longer receives the same sound.
Guidance is more graph visvitlyuє the phenomenon of frequency masking. I don’t blame the hippies of the rest of the generation, but the process was called “stereo consciences” by my good French. Those that were true for non-ruinous compression, also for destructive compression, if the file is directly proportional to the number of recorded tracks, then a mono recording takes up less than half the space for recording in stereo! However, another aspect of the human ear is surrounded by the building of low frequencies in the diffusion space, on the vіdmіnu vіd high frequencies, From which dzherelo can be easily resurrected.
Our days are full of stories about those who have spent the right music with the advent of compressive audio formats such as MP3, AAC and similar. Chi tse so? Chi vryatuyut music Lossless format? What else can you do without preparations to listen to music in MP3 and FLAC formats? Let's take a look at which food.
What is Bitrate?
Imovirno, ve already chuli the term "bitrate" earlier, і ve, maybe, maєte publicity about those that it means, but, perhaps, it’s good to know about official appointments, so that you know how everyone works.
Otzhe, why the bass coding in the stereo? It is important to feel the difference, more than a part of the hour. As your song avenges bass from wide stereo images, you can save that aspect of the song. Huffman hit again. The same algorithm, like before, is based on the fact that shukati, like encoding a sound, is identical to the input. Tse rіdko bovaє at the folded part, but it can be in the ethereal part of the shmatka.
If mi want to koduvati sound file We have a few options. That one, which signifies the quality of the final compressed sound, is "Bitrate", which is really the bit speed, as it slows down when transferring the file. For example, at 128 Kb/s, the file is subject to 128 kb/s bandwidth for listening in real time.
Bitrate- The whole number of bits or the number of data, which are processed by the stretch song period hour. In audio, tse means a kilobit per second. For example, music, as you buy it in iTunes, become 256 kilobytes per second, so 256 kilobytes of data are lost in the skin second of a song.
The greater the bitrate of the track, the greater the amount of credit on your computer. As a rule, audio CDs take a lot of time, so it has become a common practice to grab these files so that you can record more music on your hard drive(or iPod, Dropbox or else). Itself here to enter at the super-cookie format “without cost” and “with cost”.
You may also need to unmute or unmute the connected stereo system, or you may need to turn this option on, or you may need to save additional information for encoding the signal. Shards of the exchange of the amount of information are strictly set by the bitrate, the stereo sound is due to coding with less accuracy, in order to counteract the increase in information, which requires coding, as a result of the fact that two channels are due to good coding, due to good coding
Lossless and Lossy format: what is the difference?
If we say without spending, we may be on the verge, so we did not change the original file. That's why we copied the track from the CD to our hard disk, but they didn't squeeze the flooring that we spent like a tribute. It is essentially the same as the original track of the CD.
Navіscho koduvati їх just like that, how can you go through? This system allows you to dynamically change the bitrate of the coding, depending on the complexity of the sound. In this order, the dark passage will be encoded at 16 Kb / s instead. Destructive squeezing, what is not ruining, is it squeezing? Sound fahіvtsі will tell you everything: a ruinous stisk is a catastrophe. Prote digital television that radio, as well as the transmission of multimedia via the Internet, is destructively constrained to ensure the flow of information in real time.
It is impossible to transmit squeezing sound through the transmission channels, as I can. Completion of this cleaning: you still practice locally, at home, and you have a place for your hard drive pidit for squeezing. Axis is a list of sites, yakі vykoristovuyutsya pіd hour of writing tsієї statti.
However, most of the time you probably copy your music in Lossy format. So, you took a CD, copied it onto a hard disk and squeezed the tracks so that the stench did not take up a lot of space. A typical album, obviously, takes up 100 MB or so. The same album in the format without expenses, such a way (also known as Apple Lossless), borrowing about 300 MB, it has become a common practice to beat the format with expenses for more Swedish interest and more savings on hard drive.
The sound of the most powerful, what is it?
Some people don’t know enough, some of the ruinous squeezing gives the music some of the emotions and relief, like through the tse. Honor the sound, understand the words to describe it. A lot of technical terms are listed in the glossary at the bottom of the page.
The sound is the vibration of the native at sight of the wind, the vibration that is perceived by the human mind. This is the sound, like the wine is understood in yoga, natural, similar to the state. In response to this sound, turn on the suffocation, and then renew it. The era of counting digital technologies revolutionized those, as we choke on it: we are now talking about digital audio. From povagi to the music, as it was, they played and recorded it. The process of squeezing is accompanied by a lot of details to the sound, especially in the harmonies of the most intense sounds, which lead to a deepened vigor, but not much space, which is necessary for saving. taking interest.
The problem lies in the fact that if you squeeze the file to save space, you see the little things. So, just as if you take an image with a high clarity, and squeeze it into JPEG, your computer takes data and “deceives” the songs of a part of the image, the images of yoga are basically the same, but with some clarity and clarity.
As a butt, take two images, hover below: the right hand is clearly stylistic, and as a result, the brightness has changed
Keep in mind that you save space on a hard disk while squeezing music in Lossy format, which can be more important for an iPhone with 32 GB of memory, but for more space, there is less compromise.
Explain the differences: 128 Kb / s, for example, take up a little more time, but also a low quality of creation, a larger file of 320 Kb / s, which, in its own line, lower for the capacity, a lower standard file of 1,411 Kb / s. 1,411 Kb/s is the quality of an Audio CD, which, as a rule, is more low enough.
The whole problem is not in how strongly the music is compressed, but in what kind of possession you can hear.
What is the true bitrate value?
Shards of memory with skin rock are becoming cheap, listening to sound with a higher bitrate, which is common with Lossless formats, starting to become more and more popular. Ale chi varto tse hour, zusili that borrowed memory from your telephone and computer?
I do not like to suggest that you be fed in such a way, but, unfortunately, you need to lie.
Part of the river - all possessions, like you victorious. As if you victorious like a pair of headphones or speakers, they sounded up to a great frequency and dynamic range. In this rank, ve, better for everything, commemorate the shortfalls, as if blaming the hour of squeezing music from files with a lower bitrate. You may want to note that MP3 files are of low quality during the day and the level of detail is low; Subtle background tracks can be more important for a child, upper low frequencies they won't be so dynamic, otherwise you can feel the distortion of the soloist's vocals. In these episodes, you may need a track with a higher bitrate.
However, you still listen to your music with the help of cheap headphones on your iPod., You, maybe, do not mention the difference between a file with a speed of 128 Kb / s and a file of 320 Kb / s, it does not seem to be music without a cost of 1,411 Kb / s. Remember, if I showed you the image of the dekіlkom in paragraphs more and said that you, maybe, had a chance to be surprised at the new one, to make some nedolіki? Your headphones are similar to a shortened version of the image: the stink of smashing it is not enough important for the mind, because the stink is not physically good to play music for you the way you need it.
Another part is equal, obviously, your voice. For some people, it might be important to consider two different bitrates for a simple reason - they don't hear much music. A beginner in hearing, as if it were something else, develops through practice. As you often and richly listen to music, your hearing becomes more accurate and begins to pick up the finer details and sounds. But until then, there is no special meaning, what kind of bitrate do you win?
What format and bitrate should you choose for yourself? Want to download 320 Kb/s for you, what do you need Lossless format for?
On the right, it is important to feel the difference between a file without insertion and an MP3 file of 320 Kb/s. In order to feel the difference, you need a serious high quality, a good ear for that singing type of music (for example, classical or jazz).
For the most important people, 320 Kb/s is more than enough for listening.
What else do you need to lie?
Music, recorded, may be korisnoy. The files in the Lossless format are bigger than the future, so you can always squeeze them into the Lossy format, if you need it, but you can't rob it out of the box and recreate a CD like an MP3 file. Well, again, one of the fundamental problems with online music stores: you created a great library of music in iTunes and one day you wrote that you need more bitrate, you happen to buy it again, at least once in the CD format.
Whenever possible, I always buy or copy music in Lossless format for backup purposes.
I understand that audiophile, tse yak golka pіd nіgti. As I already said, everything lies in front of you, your hearing is obladnannya, like you have.
Match two tracks recorded in Lossless and Lossy formats. Try some different audio formats, listen to their singing hour and beware, there will be a difference for you.
You spend a little more time listening to your favorite music - not so scary, right? Enjoy cym!
