What is the best sounding audio format? Is it MP3?
Best Audio Format
The audio formats with the best sound quality are
Best Audio Format
mp3
b, wav
c, wma
d.rm
Answer: The
B wav format files are usually stored on the computer The most widely used file format is an uncompressed format, which stores the most authentic and original sampled data, that is, the sampled data of the set frequency and bit depth they are true and lossless, like 44.1 kh/16-bit audio CD quality, other frequencies and bit depths can of course be stored.
Below are other audio file formats:
1. Format
MP3 MP3 is an audio compression technology that compresses files to a small volume on the premise of losing a certain amount of high-frequency timbre data. The highest bitrate can only reach 320K. The frequency part is basically lost.
2. Format
WMA WMA is Windows Media Audio from Microsoft. The WMA format has a higher compression rate than MP3 and the generated files are smaller. It is suitable for transmission in low-speed networks many years ago.
3. Format
FLAC FLAC is lossless audio compression. Since it is lossless compression, it will not destroy any original audio data information and can restore the sound quality of the music on the CD. FLAC is very similar to MP3, but it is lossless compression.
4. The format
APE APE is similar to FLAC and is also a lossless audio compression technology.
Something very important, that we will develop in another article and that is almost always ignored when it comes to comparing audio formats, is the equipment or device that we use to play music.
What is the rate? Of course, I can’t directly explain to you that “rate is bitrate”. When you play sound files with some software, you should notice a small message. For example, “128Kbps”, “1411Kbps”… Some friends also know that under normal circumstances, the larger the number in front of “Kbps”, the better the sound effect, for example, CD is “1411Kbps”. So what exactly do these numbers represent? In a nutshell, how much data is converted into sound per second. The reason CDs sound better than MP3s is that CDs have more information per second than MP3s. For example, compared to a 1411 Kbps CD file, a 128 Kbps MP3 file can convert almost 12 times less data per second than a CD. For the same song, the CD is much more delicate to listen to (of course, there is a group of people in the crowd known as “mushrooms” who can feel that the effect is the same) MP3 expresses the same content with less data and, of course, its level of detail is not as good as that of a CD.
2. Sampling rate.
Sampling rate is also a very common term. The specific form is “XXHz”, where “XX” is a specific number. Such as “44100Hz (44.1KHz)”, “32000Hz (32KHz)” and so on. As mentioned above, digital audio files are made up of many “points”, so the sample rate is actually a standard “quantity” to collect these “points”. Obviously, the sampling rate of “44100 Hz” is higher than that of “32000 Hz”, so more points are collected per time unit (1 second). The more points per unit of time, the more complete the sound information and, of course, the closer to reality. So if the guaranteed rate is the same, the file “44100Hz” is better than “32000Hz” (of course, this is not absolute).
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lossy compression
In fact, we are all familiar with lossy compressed audio sources. At present, popular lossy formats mainly include MP3, WMA, OGG, MP3pro, AAC, VQF, ASF, etc.
2.WMV format
The full name of WMA is WindowsMedia Audio, which is an audio format promoted by Microsoft. The WMA format achieves a higher compression ratio by reducing the data stream while maintaining sound quality. The compression ratio can usually reach 1:18, and the generated file size is only half of the corresponding MP3 file.
3.MP3 format
The full name of MP3 is MovingPicture Experts Group Audio Layer Ⅲ. In a nutshell, MP3 is an audio compression technology. Since the full name of this compression method is called MPEGAAudio Layer 3, people call it MP3 for short. It was born in 1993, and its “parents” are the German FaunhofeIIS and the French Thomson.
MP3 uses MPEGAudio Layer 3 technology to compress music into smaller files with a compression ratio of 1:10 or even 1:12. In other words, you can compress files to a smaller size with little loss of sound quality. And it keeps the original sound quality very well. It is precisely because of MP3’s small size and high sound quality that the MP3 format has become almost synonymous with online music. The MP3 format of music per minute is only 1 MB in size, so the size of each song is only 3-4 megabytes. Use an MP3 player to uncompress (decode) MP3 files in real time so that high-quality MP3 music can be played.
In our daily lives, we listen to all kinds of music, and most of this music is transmitted in digital form, whether it is listened to or downloaded to a computer or played on an MP3 or CD player. Of course, you will often see various formats like MP3, WMV, APE, etc., but do you understand the meaning of these formats? Below I have compiled some of this content for you, I hope it helps you.
1. Introduction to digital music
Digital audio sources, that is, digital audio formats, first referred to CDs. After the CDs were compressed, a variety of formats suitable for playback on Walkmans were derived. These compressed formats can be divided into two categories: there is lossy and lossless compression. The compression mentioned here refers to converting the audio stream encoded in PCM or WAV format to other formats after special compression processing, so as to achieve the effect of reducing the file size. Lossy/Lossless refers to whether the sound signal retained in the new file is reduced compared to the original PCM/WAV format signal after compression.
PCM encoding is short for PulseCode Modulation, also known as Pulse Code Modulation, which is one of the digital communication encoding methods. The sampled value is rounded and quantized according to the hierarchical unit, and the sampled value is represented by a set of binary codes to represent the amplitude of the sampled pulse.
The final form of the digital audio signal is still made up of “0/1”. They can be any permutation and combination, such as “0001110101” or “11100001010”. Of course, different combinations have different effects. Seeing this, some friends should have noticed. If the sound is recorded in the form of “00101010”, then the final form is not a “dot”, that is, a simple “change” process. The sound is continuous, how can it be recorded with “dots”? Shouldn’t the sound we hear be segment by segment? The reason is not difficult to understand. Go home and turn on the fluorescent light, can you find the fluorescent light flickering? can not? In fact, fluorescent lights flicker constantly. Have you seen cartoons? They are all connected by a grid of still images. We can also simply understand the images one by one as “dots” one by one. Man against nature
There are limits to the sense of the world, both visual and auditory. The reason cartoons can produce coherent motion is that these “dots” are an illusion that people create when human vision doesn’t respond in time. With the exception of machines, people cannot distinguish these “dots”. So is the sound. If the frequency of the sound flicker is very fast, people cannot distinguish it. Also, when the sound performs a “digital conversion of analog signals” (D/A conversion), the decoder chip has already connected these “dots” coherently, so we hear a very coherent sound.
Which format has the best sound quality for music?
Music Format
PCM, the highest level in audio files, is the ancestor of all digital audio (not including analog), with the highest fidelity and high volume.
Music Format
Common formats include pcm and cda, which are primarily used to burn records as CD files. CD is not a format, it is a standard, please refer to the official red book published by SONY (Sony) for details. It could be on a common CD-ROM, which was later modified) and cannot be saved as format.
Therefore, it must be said that PCM format has the best sound quality, but its volume is extremely large, so it generally uses WAV as the original file to save audio files, the quality is also quite high, the loss is almost quite small, but the volume is relatively large. This is a format developed and illustrated by Microsoft, which is suitable for Windows operating systems and can also be used on the latest MAC systems. Extension: .wav
is the original audio format dedicated to the MAC system, it is AIFF, the extension is Aiff, which was independently developed by Apple and is very common on Mac. That said, this is the best format (except PCM) on a Mac.
On Unix and Java platforms (which mostly refer to SUN platforms), the corresponding format is AU and the extension is au. It is currently the standard audio format under Unix and Java.
The above formats are all original file formats, which are usually huge in size. In order to facilitate transmission on computers, people have developed compression formats. Compression is divided into lossy compression and lossless compression. Obviously, lossy compression has a higher compression rate, but it requires The problem to be solved is how to solve the sound quality problem. The usual practice is to sacrifice the part that the human ear cannot hear, but the human ear is very different, so it is difficult to care for all people. Among the song formats, the best ones are flac (lossless, flac extension), Monkey’s Audio (lossless, ape extension), DTS (multichannel, mainly used with DVD, dtc/wav extension), AC3 (released by Dolby, multichannel surround , realistic sense of presence, extension ac3), AAC (loaded, good sound quality, extension Aac or mp4), WMV (this is also a video format, an improved version of wma and asf, quality is comparable High, extension wmv), as well as MusePack (mpc extension, completely free) and MP3Pro (mp3 extension) are also quite good, these formats are quite high in sound quality, even for users who require not bad sound. Also, the most popular formats are mp3 and ogg, as well as SONY’s special ATRAC/ATRAC3 format, which is dedicated to MD. These effects are also good and are more common on the Internet, but the effect is obviously not as good as the formats mentioned above.
As for rm and wma, because the compression is too high, the sound quality is really unflattering, especially those that circulate on the Internet, which are lost and cannot be lost anymore, so it is highly discouraged.
When I want to download songs, I always feel that the sound quality is not so pure, it seems a bit muddy, what format is good to listen to?
Music Format
There are three lossless music quality formats: ape, wav and flac.
APE is one of the popular lossless compression formats for digital music. Due to its early appearance, it has a wide user base all over the world, especially in mainland China. Lossless compression formats such as APE use a more refined recording method to reduce volume, and the restored data is the same as the original file, ensuring file integrity.
WAV is a sound file format developed by Microsoft. It complies with the RIF file specification and is used to store audio information resources on the Windows platform. It is widely compatible with the Windows platform and its applications. This format supports a variety of compression types. algorithms and supports multiple WAV file with standard format is the same as CD format, with 44.1K sampling frequency and 16-bit quantization number, so the sound file quality is almost the Same as CD.
Chinese translation FLAC is a lossless audio compression coding. FLAC is a well-known free audio compression codec, which is characterized by lossless compression. Unlike other lossy compression codes such as MP3 and AAC, it does not destroy any original audio data, so it can restore the sound quality of music discs. It has been compatible with many software and hardware audio products (such as CDs, etc.) since 2012.
Can you really hear the difference in the sound quality of music?
difference in the sound quality of music
A brief discussion of the principle of audio compression
difference in the sound quality of music
grade headphones – performance, equipment – can you really hear the difference in music quality? A brief discussion of the principle of audio compression
When you listen to music, most of the time the format being played is MP3 or AAC.
Both formats are smaller formats in which the audio is processed and compressed. To reduce size and save space, they actually remove a portion of the sound signal compared to the original audio. But can you hear it?
In this article, we will introduce the principles of music compression and discuss a question: Does music compression really affect the music you listen to?
The principle of musical compression.
Most of the digital audio we receive every day, whether played online or stored as a file, uses the principle of lossy compression. Lossy compression not only compresses the data, but also deletes the original data, and with lossy compression, some data is gone forever.
But keep in mind that this censored data is not randomly selected. Audio compression formats apply psychoacoustics to remove sounds that are beyond our hearing range and that we are not aware of.
audio compression – operation, equipment – can you really hear the difference in music quality? A brief discussion of the principle of audio compression
The human ear has a hearing range of about 20 Hz to 20 kHz, and sound signals beyond this range cannot be detected even if they are removed. And as we age, the range of hearing decreases. Therefore, it can be said that the sounds that everyone hears are not really absolutely the same, even if they come from the same sound source.
The audio below can help you find your hearing range, you can listen to it with headphones to see how far away you can hear the sound signal. Be careful to control the volume at any time during the listening process, otherwise it may damage your hearing.
Also, when high-frequency sounds and low-frequency sounds are present at the same time, high-frequency sounds will be more difficult to hear clearly. For example, the constant drumbeats in the music can cause you to ignore the slight differences between the melodies.
This phenomenon is called “shadowing” and is used in the principle of compression. If there are louder low-frequency sounds, it can mask the sonic loss of high-frequency sounds. High and low here are relative, so this principle can be applied globally. But sounds above 15 kHz are more susceptible to masking, so that’s also a prime issue for compression.
Although it is obvious that the sound signal removed by lossy compression should be mostly useless data, there are still people who believe that these “ambient sounds” being removed will affect the three-dimensionality of the sound and flatten it.
In general, the key to lossy compression is finding a balance between reducing size and preserving sound quality.
mp3 download song – download mp3 song – mp3 song download
Actually, at this time it is not necessary to use Napster-type programs, everything has become simpler.
Normally you just need to download the video of a song in mp4 format, for example, and then convert it to mp3.
Mp4Gain is the ideal tool to convert videos to mp3 or any other popular audio formats like Flac, Ogg, AAC, m4a, etc.
To download a video, simply use any free web page and once we have the video on our computer, we will use Mp4Gain (Windows) to extract the audio and convert it to mp3, with the normalized volume and the highest audio quality.
As we pointed out, this conversion from outube to mp3 is very simple, you only need the following steps:
1.- Download the youtube video on free online pages
2.- Use Mp4Gain to extract the audio and convert it to mp3, with normalized volume level and great audio quality.
Mp4Gain can do this on a video or a batch of videos.
We will obtain MP3S with a normalized volume level and very high audio quality, impossible to distinguish from a CD.
Mp4Gain is the most advanced normalizer available today that equally normalizes audio, video and converts all popular audio & video formats.
What is the difference between MP3 and lossless sound quality?
MP3 LOSSLESS
Is it possible to distinguish Mp3 quality from CD Quality?
mp3 lossless
Although the sound quality of a CD does not reach the true hearing limit of the human ear, it is impossible for most people to tell the difference between a CD and a higher sampling rate, so everyone assumes that the CD sound quality is 44.1 kHz can be converted to lossless sound quality.
In the past, the capacity of storage media was not large. To store more music and make it easier to stream, we used to compress large CD audio files. High frequency and low volume sounds are removed to achieve the purpose of reducing file size. Similar formats include 3GP, M4A, AA3, WMA, etc.
With the development of the Internet and storage media, the size of audio files is no longer important, so lossless compression has gradually become popular. Common formats are APE, FLAC, etc., which are similar to the beginning of ZIP compressed files, compress audio files AND packed, the final file size is basically only half of the original CD file. Here it is emphasized that the WAV format we often say is a waveform record file, which uses uncompressed PCM encoding, which is also a relatively large WAV file. 44.1 kHz 16-bit WAV audio can also be considered uncompressed. Lossless sound quality.
Since different devices support different audio compression formats, we often need to transcode, and each transcode will cause some loss in audio. For example: If you convert MP3 to lossless format, you can only achieve the sound quality of the original MP3 file. This lossless can also be called false lossless. This is the case for most lossless music provided by music portals.
I have been recording for many years and have used speakers ranging from tens of thousands to millions of dollars. Why do I rarely use speakers under 10,000 yuan? Because speakers under 10,000 yuan cannot be used as monitors. I advise everyone not to charge money for listening to music on music portals for lossless sound quality. Untrained ears will not be able to hear the difference between true and false without loss. For normal ears, MP3 with a bit rate of 320 kbps is already the best.
What is the difference between MP3 and lossless sound quality?
Mp3 Lossless
Now, many people think that it is impossible to listen to MP3, so they search for lossless music everywhere on the Internet.
Mp3 Lossless
So what is the difference between lossless music and MP3? What about the various lossless music formats?
A few days ago, a friend of mine bought a Porsche sports car and then came to ask me for lossless sound quality music. I told him there was no need to play MP3s, but people weren’t happy. The sound in the car was fine. Playing MP3 is a loss of audio.
Now there are many music websites that give lossless to the myth, but do you know what lossless is? What is the difference between lossless music and ordinary MP3? Today I come to talk to you about those things that have no losses.
I remember when Apple held the Iphone4 conference, it came up with a definition: retina display. In short, it has been replaced by a high resolution screen with pixels that exceed the recognition limit of the human eye since the Iphone4. I must say that Mr. Qiao’s trick is very good, he defines a word that everyone can accept and makes Apple mobile phones sell all over the world.
However, the same concept is much older in the world of acoustics. Sound is a type of energy wave. After the experimental research of countless generations of ancestors, it is believed that 40 kHz is a value that can well restore the sound heard by the human ear. Later, for various commercial reasons, some record companies defined the sample rate of CDs at 44.1 kHz, which they considered to be the “retina display” that the ears could hear. Later, 44.1 kHz brought innumerable problems to subsequent generations, because it is not an integer and cannot be divided and multiplied simply by performing SRC sampling, so early Inter defined the output sample rate of the sound card as 48 kHz to save problem. , which creates a sample rate conversion problem that all sound engineers hate
The higher the bitrate, the higher the sound quality and the larger the file size.
audio bit rate
but the quality of the source file determines the final quality.
audio bit rate
From highest to lowest, the sound quality will be worse, but from lowest to highest, the sound quality will remain unchanged at most, but the file will be larger.Many
General mp3 are good with bit rate around 128, and also 3-4 BM in size.
The bitrate, choosing it, directly affects the size of your mp3 file and the listening experience. High compression ratio has high distortion, and low compression ratio has low distortion, but how do we find a balance point that we can accept on both counts? This requires careful exploration in the experiment. Considering that the sound quality of low bitrate files is not suitable for playing music, the minimum set is 128kbps, and four fixed bitrate files of 128, 192, 256 and 320 are used for comparison. and try.
The compression ratio of 128 kbps is still relatively rough, and the high-frequency part is highly distorted after compression. It sounds hollow, wrinkled, rough, and there are often flickering sounds. Misunderstanding, the compressed volume of a 3 minute 39 piece of music is 3414 Kb. Although the volume is not large, the sound is not satisfactory, and there are relatively large defects.
192kbps bit rate compression effect is much better than 128. First of all, the sound is solid, at least there is no empty feeling, the high-frequency distortion is also much less, the sound is compact, the noise is small and clean, and achieve relatively ideal listening The sound effect, just because the compression is still relatively strong, the detail performance is still not very good, the texture of musical instruments, especially instruments of wind, it is still very hard, unreal and lacks musicality. The compressed size is 5123kb, and I think the compression ratio is 128~ It is better to use it in a mp3 player with a capacity of ~256m, which can not only satisfy the basic sense of hearing, but also is suitable in size.128m can store about 95 minutes of music, and 256m can double to 190 minutes of music.
The 256 kbps compression rate is naturally a step higher than 192 in terms of sound quality. Take the first 10 seconds of the track, the low frequency of the cello is obviously less grainy, and the sound is more smooth and natural, with texture and texture. It is also clearer, with much more detail, the rendering of the atmosphere is more prominent, the rotation of parts in the following songs is also more expressive, the clarity of large and small signals is also improved, and the sound is more detailed and lasting. But at the same time, the file size has also increased to 6831kb, which is still affordable for a 256m mp3 player. It is not difficult to know by calculation. According to the bit rate of 256, about 135 minutes of music can be stored. Generally speaking, it is enough, 128m is a bit less and can only support a little over an hour, so it is recommended to use 192 bitrate for 128m.
320 kbps is the maximum bitrate that lame can provide. The final file generated is 8592kb which is about 8.4M. Compared to the 37M of the wav file the compression ratio is basically 4.5:1 but the generated mp3 file sounds very distorted Now on Compared with other 320 bit rate, the natural advantage is obvious, the tone, details, etc. are very delicate, basically achieve the sound quality of the original CD copy, especially in the CD player with playback function from mp3, the basic No difference, but I use relatively high-end earplugs with high resolution, plus my experience and skill with music and equipment, I can still hear a lot of differences compared to wav files, first Instead, the compressed mp3 sounds a bit The crunch feeling is relatively dry on the whole. Without the wav file, it sounds fresh and dynamic. In terms of final details, nuances and sense of space, the separation is not as high as the quality of the wav file, but it is quite close in terms of timbre, but the performance is poor and the digital flavor is relatively strong. So if you are using a miniature hard drive player like an iPod, I recommend you use 320kbps compression ratio, which can get the best listening experience. Of course listening to wav directly is the best~
