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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.

Detailed music format

classic wave

As the most classic Windows media audio format, the WAVE file is widely used, which uses three parameters to represent sound: the number of sampled bits, the sample rate, and the number of channels.
The channels are divided into mono and stereo, and the sample rates are generally 11025 Hz (11 kHz), 22050 Hz (22 kHz), and 44100 Hz (44 kHz). The capacity occupied by the WAVE file = (sampling frequency × sampling bits × channel) × time/8 (1 byte = 8 bits).

traditional mod

MOD is a wavetable-like music format, but its structure is similar to MIDI, it uses real samples, and the volume is small. In the earlier DOS era, MOD was often used as background music for games. Modern mods can contain many audio tracks in many formats, such as S3M, NST, 669, MTM, XM, IT, XT, and RT.

midi music computer

MIDI is short for Musical Instrument Data Interface. Records the sound played by the instrument digitally (each note is recorded as a number), and then synthesizes these records via FM or wavetable during playback: FM synthesis is the sound of the instrument is simulated by mixing the multi-frequency sounds; wavetable synthesis consists of storing the sound samples of the instrument in the wavetable of the sound card and extracting the sound from the wavetable as you play.

Boss Boss MP3

It can be said that MP3 is famous, it uses MPEG Audio Layer 3 technology to compress the sound with a compression ratio of 1:10 or even 1:12, with a sampling rate of 44kHz and a bit rate of 112kbit/s. .
MP3 music is music stored in digital form. If you want to play it, you must have a corresponding digital playback and decoding system. Generally, MP3 digital music is decoded by special software and then restored to a waveform sound signal for playback output. This type of software is called For MP3 players, such as Winamp, etc.

Overlord RA series online

RA, RAM, and RM are Real’s mature network audio formats, using “streaming audio” technology, making them well suited for network streaming. Information such as copyright, singer, producer, mail and song title can be added during production.
RA can be called the supreme lord of multimedia communication on the Internet. It is suitable for streaming on the Internet and is currently the best format for listening to online music online.

VQF with high compression ratio

VQF or TwinVQ is an audio compression technology developed by Nippon Telegraph and Telephone and Yamaha Corporation.
The audio compression rate of VQF is almost twice that of standard MPEG audio and can reach approximately 1:18 or even higher. And popular compression formats like MP3 and RA are usually only around 1:12. But it still won’t affect the sound quality, when VQF compress music at 44kHz-80kbit/s audio sampling rate, its sound quality will be better than 44kHz-128kbit/s MP3, when compress at 44kHz-96kbit/s , the music is close to 44kHz-256kbit/s MP3.

MD minidisc

MD (ie MiniDisc) is a comprehensive portable music format released by SONY in 1992. The compression algorithm it uses is ATRAC technology (the compression ratio is 1:5). MD is divided into Recordable MD (Recordable, with two heads of magnetic head and laser head) and Single Play MD (Prerecorded, only laser head).
The powerful editing function is the strong point of MD. You can quickly select tracks, move tracks, merge, split, delete and edit track titles. It is more personalized than CD and you can have your own MD album at any time. MD products include MD Walkman, MD bedside audio, MD car audio, MD recording deck, MD camera gun and MD driver, etc.

What makes an audio format lossless?

Lossless Audio

What makes an audio format lossless?
The best audio formats for your music library

Lossless Audio

You might think of the word “lossless” as being used for audio formats that don’t use any kind of compression. However, even lossless audio formats use compression to reduce file sizes to reasonable levels.

Lossless formats use compression algorithms to save audio data so that the audio is exactly the same as the original source. This contrasts sharply with lossy audio formats like AAC, MP3, and WMA, which use algorithms that discard data to compress the audio. Audio files consist of sounds and silences. Lossless formats can compress silence to almost zero space while preserving all sound data, making them smaller than uncompressed files.
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What lossless format is commonly used for digital music?
Popular lossless formats for storing music include:

FLAC
WAV
A THE C
lossless WMA
The effect of lossless formats on music quality
If you are downloading lossless music tracks from an HD music service, you would expect the sound quality to be really high. On the other hand, if you digitize a low-quality music box using a lossless audio format, the audio quality will not improve.

What are the advantages of the lossless audio format?

What are the advantages of the lossless audio format?

Lossless and Lossy Audio Files

The advantage of lossless for storing an audio collection is that the quality of the recordings is much higher than that of lossy codecs and they take up less space than uncompressed audio. It is true that lossy files are smaller than lossless music files. Most modern playback programs understand the lossless format. Programs that cannot play it can easily learn it using the lossless plugin. What are lossless audio formats?

Lossless audio

Lossless audio formats
A true music lover is unlikely to be satisfied with the sound of music recorded in Ogg Vorbis or MP3 compression formats. Of course, if you listen to audio recordings on home audio equipment, sound defects cannot be heard with your ear, but if you try to play a compressed file on high-quality Hi-Fi equipment, you will immediately find the sound defects. . Of course, creating a collection of quality music on CD or vinyl is not easy. There is a reasonable alternative to this path for lovers of high-quality sound – lossless music. It can be stored on a PC in a way that allows you to keep your music’s original settings unchanged, even if compression is applied. In this way it simultaneously solves the problems of high-quality music and its compact storage, since audio equipment for listening (headphones, speakers, amplifiers) is quite affordable.

Uncompressed lossless audio formats:

CDDA is an audio CD standard;
WAV: Microsoft Wave;
IFF-8SVX;
IFF-16SV;
AIFF;
Compressed formats:

FLAC;
APE – Monkey’s Audio;
M4A – Apple Lossless – Apple’s high-quality music format;
WV – WavPack;
WMA: Windows Media Audio 9;
TTA – True Audio.

FLAC format
The most common format is the. It differs from lossy audio codecs in that no data is removed from the audio stream when it is used. This makes it possible to use it successfully to play music on Hi-Fi and Hi-End equipment, as well as to create an archive from a collection of audio recordings.

The great advantage of the format is its free distribution. This is important for musicians who record music on their own. The format has gained a lot of popularity recently, thanks to which its support is included in the vast majority of multimedia players.

APE format
Unlike FLAC, for the APE format there are only codecs and plugins for the Windows platform. For other platforms, there are expensive third-party software solutions. The algorithm is capable of achieving lossless compression of audio information between 1.5 and 2 times. It includes three main stages of encoding, of which only one is based on the use of inherent properties of sound for compression. The rest are similar to conventional filing cabinets. Even though the compression algorithm is distributed free of charge, the licensing restrictions are such that it is practically inaccessible to amateur musicians.

Apple Lossless Format
You can listen to high-quality lossless music using the audio compression codec without sacrificing Apple quality. This format was developed by Apple for use on its own devices. The format is compatible with iPods with special dock connectors and the latest firmware. The format does not use specific rights management (DRM) tools, but the container format contains such capabilities. It also supports QuickTime and is included as a feature in iTunes.

The format is part of the free access libraries, which allows you to organize listening to files in Windows applications. In 2011, Apple released the source codes for the format, opening up broad prospects for the codec. In the future, it can seriously compete with other formats. The tests yielded good results. Compressed files vary in size between 40-60% of the originals. The decoding speed is also impressive, which justifies its use for mobile devices, whose performance is not high.

One of the disadvantages of the codec is that the extension of the audio files matches the audio codec, leading to confusion because AAC is not a high-quality music format. Therefore, it was decided to store the data in an MP4 container with the extension .m4a.

Lossless audio formats

We will show you the formats that maintain all the quality of the audio files, compressing just enough. Lossless formats tend to maintain the original quality almost totally, suffering a minimum loss of quality. In summary, they are slightly compressed so that the audio remains intact and the size on disk is smaller.

Among the Lossless formats we have:

FLAC, is a format whose algorithm is similar to ZIP or GZip, but specially designed for audio compression. While ZIP would compress a CD quality audio file from 10% to 20% of its original size, FLAC would compress it from 30% to 50% while maintaining the full quality of the source.

Monkey’s Audio (APE), like FLAC allows lossless compression, but the greatness of Monkey’s is that it compresses bit by bit, reaching data rates of up to 700kbps without any loss of quality.

Apple Lossless (ALAC) uses an MP4 container (with a .M4A extension) for its files just like the MPEG-4 AAC and is specially created for use on the iPod.

Shorten is another Lossless format with characteristics similar to Monkey’s Audio or FLAC, but using the .SHN extension and requires fewer resources for its reproduction.

WavPack uses a hybrid mode, unlike the other Lossless formats, since it uses a Lossy file, which creates a relatively small file at high quality, and a corrector file that recovers the remaining quality of the original file, resulting in an audio file at averages between Lossless and Lossy, but with the same quality as a compressed file with any other Lossless algorithm.

TTA (True Audio) is a free and free LossLess format that reduces by 30% the original size of the source audio file and uses compression / decompression in real time.

What are the advantages of listening to music in FLAC format?

The FLAC format allows us to save audio without loss of quality. This codec encodes the file with the same information that the original CD would have (which would be the WAV file).

It is an open source format (Free Lossless Audio Codec) that could be improved, thanks to its registration as an open source license.

Higher quality, especially for HiFi equipment: this format allows us to enjoy a bitrate between 900 and 1100 kbps that does not delete information as it does in the MP3, even if it is of high quality. You will notice a warmer, fuller and cleaner sound.
The information is continuous between tracks: just like on the original CD, you can listen to music without interruptions between tracks.
The music is not altered: and that is the main reason why FLAC is ideal. Well, the file you use is the same one that you would download from the CD.
The FLAC format supports unlimited sampling rates – a FLAC can reproduce frequencies of 192,000 Hz without problem.
However, all that it reduces is not gold. There are also some problems with FLACs that you should be aware of, although they are not serious at all.

Disadvantages of listening to music in FLAC format

They take up more: as a FLAC file usually takes up a little more than half of the original CD file. It is easy for an album to go to 300 MB.
Many players do not support FLAC – this is changing in a beastly way. But the industry has fought for the MP3 to the last breath and many players, radios, etc. do not yet support this standard.
That is, the disadvantages are or rather were. In the future we will have a new cleaner format, which will surely take up less space and be an evolution of FLAC. Currently, however, it is the format par excellence and the one that we should all use, although I am not sure that a new, closed format will not come out, that can cope with it before it reaches its peak.