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lossless sound quality

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lossless sound quality

The principle of these audio compression methods is to keep as much as possible the parts that are easy to hear for the human ear.

In the main constant bit rate (CBR) mode, audible data in the audio is removed and it is easier for the human ear to hear. The more information that is retained for the part, the less information that is retained for the less audible part. As sound complexity increases, the degree of sound quality degradation becomes more apparent. For example, when listening to pure human music voice performances and performances combined with background music, pure The degree of degradation of the compressed music of the human voice is less obvious than that of the original file.

As for the lossless sound quality provided by today’s streaming platform, there are many formats, but strictly speaking, these formats, including flac and ALAC, belong to lossless compression (non-destructive data compression) rather than quality. lossless sound in a narrow sense, but due to its performance it is almost the same as WAVE, but the file is small, the decoding speed is fast, and it can be used in streaming services, so it is also a representative format of lossless sound quality that has entered the era without CD support, and it is also the current music streaming service.

Also, MQA like Tidal is a more controversial format, because although MQA is lossless audio compression in a broad sense, it focuses on driving high-quality music files that are above CD quality at a size similar to those of CD quality flac files. , but it can also be restored to the original high-quality audio format, but the controversial point is whether the higher compression ratio can maintain the same real auditory sense as the original high-quality audio has always been controversial. At the same time, MQA requires a specific device to perform hardware decoding. Yes, many devices can only decode MQA through software.

▲Currently called Hi-Res Audio generally refers to sound quality higher than that of a CD, but to be certified, the device must support the processing capability of the 24-bit 96kHz format.

However, since MP3 and AAC are previously planned destructive music compression formats, their purpose is to compress CD-level sound quality into smaller files, so most encoding specifications are presented in one presentation. CD-level 16-bit 44.1 kHz or 16-bit 48 kHz; but MQA is a format with a small file size that locks in high sound quality requirements. Basically, the MQA format will be music equivalent to 24-bit PCM or higher.

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lossless sound quality

Although lossless sound quality and high-quality streaming services have appeared on the market for a while

Like Apple isn’t the first to make true wireless earbuds, but it has ridden the wave of the market, with Apple’s launch of so-called hi-fi. compressed sound quality in Apple Music. In fact, after the lossless compression commonly known in the audio industry, lossless sound quality and high sound quality have instantly become a hot topic for many people to discuss, but whether the benefits of quality Lossless sound systems are really Obviously, the author will devote some space from theoretical concepts to practical levels. The difference is a simple overview, but the following arguments focus on easy understanding, so some of the descriptions are not entirely accurate.

What is lossless sound quality? What is the sound quality of the music we usually listen to?
The photo mentions * Introduction to KKBOX sound quality (including format), release year, sound quality, including numbers, KKBox, streaming media, Hi-Res Audio and Hi-Fi

▲ Both AAC and MP3 are destructive compression, while FLAC and ALAC are lossless compression

Before we get into the details, let’s talk about what is called lossless sound quality; From the author’s concept and cognition, the so-called lossless sound quality is a relative word rather than an absolute word. The main source is the relative word born due to the appearance of the MP3 music compression format; after the music industry went digital, digital music files were generally recorded via PCM encoding, and WAVE files were generally used on CDs. The time and space situation that MP3 was born into was because hard drive capacity was generally small at the time. To store a large amount of music data in storage space, you probably need to compress the files.

The reason why MP3 cannot be called a lossless format is because it essentially compresses the original WAVE in a way that limits the bitrate by combining concepts like the psychology of sound. The bitrate compression mode, compared to the bitrate of the original WAVE file, compresses at least in a range of 1:4 to 12:1. The higher the bitrate, the greater the amount of retained information. For example, AAC format also adopts similar audio psychology for compression, but the efficiency is better than MP3. Therefore, most of the lossless sound quality of most streaming platforms currently uses AAC as the mainstream.

What is the difference between MP3 and lossless sound quality?

Is it possible to distinguish Mp3 quality from CD Quality?

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?

Now, many people think that it is impossible to listen to MP3, so they search for lossless music everywhere on the Internet.

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

How to make an mp3 sound great? Part 2

If you want to know how an mp3 works, this article is for you.

As we pointed out in the previous article, talking about a digital audio file refers to the ability to take 44,100 samples per second and thus be able to draw as precisely as possible the wave, with its curvature, that describes the sound.

or that the sound is produced by the fluctuating pressure that produces a movement in the air. Like the string of a guitar or a piano that vibrates X times per second, depending on the pitch, and these vibrations produce waves in the air similar to those produced in water if an object falls.

Then those waves propagate, reach our ears and produce a wave with a certain curvature.

Digitizing this implies, as we have already said, taking 44100 (or more) samples per second and capturing its position in order to later be able to reproduce that wave as close as possible to the original.

But this implies an enormous flow of information, which must be compressed and, if possible, even discarded, to reduce its size to a point that today, with this technology, is manageable.

This is based on these principles:

– There are certain sounds that the human ear cannot hear.
– There are certain sounds that the human ear hears better than others.
– If there are two sounds playing at the same time, we can hear the one that is higher, and not the lower one.

These principles of human hearing allow us to discard sounds without a considerable loss of quality.

How to make an mp3 sound great?

If you want to know how an mp3 works, this article is for you.

An mp3 stores information digitally. The music is captured 44100 times per second, each of these parts has a size of 16 or 24 bits. The usual is 16 bits.

The sound has a curved shape, what is sought is that each frame captures an instant of that curve or bell.

If 16 bits are used, we have a little more than 65 points that form a kind of grid where each point will be located to form the curvature. It is enough information to achieve a very good definition. In 24 buts we have several million possible points on the grid to place each point on the curve.

To understand the size of a file, the following formula will be useful:

frames*bits*channels= x bits per second

In a good quality mp3 we speak of 44100 multiplied by 16 bits multiplied by 2 channels (stereo) which gives us 1,411,200 bits per second, that is, 176,000 bytes per second.

If the song lasts an average of 3 minutes, each one will occupy 32 million bytes.

Using Mp3 that 32 million bit song can be compressed to about 3 million bits.

We will need to be able to transmit 16,666 per second to be able to transmit the 3 million bits of the total song.

We will see that the more information it contains, the more transmission capacity per second we will need.

Mp4Gain is the ideal program to get these mp3s that have a sound practically identical to a CD.

What do lossy and lossless mean and which is better? Part 2

How are audio files encrypted?

In the first part of this article we saw why it was necessary to compress the audio files, since the original formats like WAV or AIFF were unmanageable if you think about sending them by mp3 and storing many on the hard drives that existed at the beginning.

In fact, even today, despite the fact that internet transmission and storage capacity have improved, wab bi el aiff is not used for this purpose, for the same reason: they take up too much space both in transmission and in storage. .

So he had to find ways to compress these files without this meaning a very notorious loss of quality.

The mp3 emerged and revolutionized the world and is still the most important format.

On the one hand, it obviously used some compression, but since it was not efficient enough, it must have begun to understand how human hearing works, in order to eliminate frequencies and sounds that are inaudible to humans and that, however, were stored, occupying space in WAV and AIFF formats.

Over time, better compression methods were developed and then formats emerged that could greatly reduce the size of the file, without losing or discarding any information. This is what is known as lossless, that is, without loss of information.

It is said that the FLAC will end up taking over the market, because it compresses the file and does not need to discard information, achieving that when decompressing the FLAC file we have an original WAV file without having deleted anything.

Mp4Gain can convert mp3 to flac and also normalize its volume or it can just normalize an mp3 or flac, without converting it. You can even extract from a video, just the audio, and record it as any popular audio format like mp3, m4a, flac, ogg, etc.

What do lossy and lossless mean and which is better?

How are audio files encrypted?

Initially, audio was recorded on a computer in WAV or AIFF format and these took up too much space.
They took up so much space that few audio files could fit on the first hard drives, because they had only a few megabytes of available space.

This still happens today in portable devices in general.

Nobody would think that a service like spotify could transmit and store wavs or files without compression.

It could not have the transmission speed, it would spend too much bandwidth and occupy the disk or storage space right away.

If we talk about videos, the same would happen with Youtube or Ntflix.

So, initially almost desperately, they looked for ways to save space, even if this had some impact on quality.

Over time, the Internet’s transmission capacity improved and different compression methods made significant progress.

Lossy

Initially, the hearing capacity of the human being was used to, in addition to compressing the files, also discard non-audible information.

Many people wonder why 44100 was chosen as the samplerate for CD discs and the first more or less obvious answer is that if the human ear is capable of hearing sounds between 20hz and 20khz then more or less twice as much was needed to be able to manage and store audio with good quality.

What determines the quality of an mp3?

How do you get a high quality mp3?

mp3 quality

This question could have two different approaches:

1.- An existing mp3 has a certain quality and one could wonder what determined that quality

2.- We are going to encode an mp3 from a video from which we will extract the audio and how will we get that new mp3 to have the highest possible audio quality?

In this case we will focus on option 2, how to create a video from original audio and make it have good audio quality.

The first step, inevitably, comes from getting original audio that is of high quality. If we do not start from that point, we will no longer achieve our goal.

The quality of the audio is very difficult to “restore” if you do not have as a starting point an original audio that will have a high quality.

But even if you do have that high quality original source, it’s important against using advanced software like Mp4Gain and taking the right steps to make sure you don’t lose that quality by making a bad decision when extracting and encoding the audio a long time ago. mp3, a flac, etc.

In order to convert or extract an audio from a video, it is important to understand what points are decisive:

-Bit rate. No, to save space, we will use a bitrate lower than 192 and if possible we will use 320.

Nor does it mean that if we have a 128 mp3 and convert it to 320 we will be able to restore its quality.

What it means is that if we originally convert to a 320 mp3, we will discard very little information and thus we will get a very high quality mp3. Virtually indistinguishable from a CD.

-The following will be to use a samplerate of 48000 or at least 44100, not a smaller one.

In order to capture the full range audible by the human ear, it is necessary to use at least 44100.

Mp4Gain is the right normalizer/converter for the job and to give you a high quality output.

How to make an mp3 sound as good as possible?

Mp3 Quality

Achieve the best quality in an mp3

Mp3 Quality

Everything we talk about mp3 in this article actually applies to other formats like FLACC, ogg, etc.

But how do you make it sound as good as possible?

In the first place we start from a source file, which is the one that you have obtained. The more quality it has, the better.

And besto wants to say that it must have a good birate and a good samplerate, that it be stereo and that it sound as good as possible.

If we start from that, we will be able to normalize the volume and give a consistent quality with Mp4Gain.

Because we will be able to use a high quality bitrate, an adequate samplerate, make the “color” of the audio clear, bright, but with powerful and defined bass, etc.

Mp4Gain can extract audio tracks from videos. Nowadays it is one of the best options since it is relatively easy to obtain good audio with the music we are looking for and Mp4Gain can extract the audio and convert it into an mp3, a FLAC, etc.

Mp4Gain is the best prepared normalizer for these times where every time we have devices with better hardware for music and video playback quality.

Because we are living in a time where devices and computers are rapidly improving their capacity for audio and video and only Mp4Gain is prepared for it.

Today, with Mp4Gain you have the perfect tool to get your audio and video with the best quality and volume.