Understanding the Differences between FLAC, MP3, M4A, OGG, and WAV Audio Formats

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Understanding the Differences between FLAC, MP3, M4A, OGG, and WAV Audio Formats

When it comes to digital audio, there are a plethora of different file formats to choose from. Each format has its own set of advantages and disadvantages, making it important to understand the differences between them in order to choose the best option for your needs. In this article, we will take a closer look at five popular audio formats: FLAC, MP3, M4A, OGG, and WAV.

FLAC

FLAC, or Free Lossless Audio Codec, is a popular open-source format that is known for its lossless compression. This means that, unlike some other formats, FLAC does not lose any audio quality during the compression process. This makes FLAC a great option for audiophiles who want the highest quality audio possible. However, FLAC files are typically larger than other formats, which can be an issue for those with limited storage space.

MP3

MP3, or MPEG Audio Layer III, is one of the most widely used audio formats. It uses a lossy compression method, which means that some audio quality is lost during the compression process. However, MP3 files are significantly smaller than FLAC files, making them a great option for those who want to store a large amount of music on their device. Additionally, the MP3 format is supported by a wide range of devices and software, making it a very convenient option.

M4A

M4A, or MPEG-4 Audio, is a file format that is commonly used for music and other audio files. It is similar to MP3 in that it uses a lossy compression method, but M4A files are typically smaller than MP3 files. Additionally, M4A files can contain advanced features such as chapters and artwork, making them a great option for audiobooks and other spoken-word content. However, it is important to note that not all devices and software support M4A files.

OGG

OGG, or Ogg Vorbis, is a free and open-source format that is similar to MP3 and M4A. It uses a lossy compression method and is known for providing a good balance of audio quality and file size. OGG files are typically smaller than FLAC files but larger than MP3 and M4A files. Additionally, OGG files can contain advanced features such as tags and chapters, making them a great option for audiobooks and other spoken-word content. However, it is important to note that not all devices and software support OGG files.

WAV

WAV, or Waveform Audio File Format, is a popular format that is known for its high audio quality. It is a lossless format, which means that no audio quality is lost during the compression process. However, WAV files are typically larger than other formats, making them an option for those who want the highest quality audio possible but have limited storage space. Additionally, WAV files are supported by a wide range of devices and software, making them a convenient option.

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Why are there so many video and audio formats, and is there a difference?

audio formats

7. VQF format

audio formats

The compression ratio of VQF format can reach 1:18, so under the same circumstances, the volume of compressed VQF file is 30-50% smaller than MP3, which is more convenient for Online streaming and sound quality is excellent with close to CD sound quality (16-bit 44.1kHz stereo). However, VQF has not disclosed technical standards and has not yet become popular.
Supplement: rare

8. Format
FLAC FLAC is lossless audio compression encoding. FLAC is a set of well-known free audio compression codes, which is characterized by lossless compression. Unlike other lossy compression codes, such as MP3 and AAC, it won’t destroy any original audio information, so you can restore the sound quality of music CDs. It is now compatible with many software and hardware audio products. In short, FLAC is similar to MP3, but it is lossless compression, which means that the audio will not lose any information when compressed in FLAC mode. This compression is similar to Zip, but FLAC will give you a higher compression ratio, because FLAC is a compression method specially designed for audio characteristics, and you can use the player to play FLAC compressed files, just like you normally do with your MP3. the files are the same.
Supplement: Lossless format, compared to ape , is larger in size, but has good compatibility, fast encoding speed, and broader player support

9. Format
APE APE is one of the most popular digital music file formats. Unlike lossy compression methods such as MP3, APE is a lossless audio compression technology, which means that after compressing audio data files read from an APE-format audio CD, it can also compress audio data files. APE Restore format files and the restored audio. the files are exactly the same as before the compression without any loss. The file size of APE is about half of that of a CD, but with the popularization of broadband, many music lovers love the APE format, especially for friends who want to stream audio CDs over the network. APE can help them save a lot of resources.
Supplement – lossless compression format, compared to FLAC, the volume is smaller. Encoding is slow.

10. Format
MID MID is the abbreviation of midi, which is its extension, “interface of digital musical instruments”, that is, its real meaning is the name of an interface for different devices to transmit signals. All of our current MIDI music production depends on this interface, and the information transmitted between this interface is also called MIDI information. MIDI was first applied to electronic synthesizers (electronic musical instruments played on keyboards. Due to the inconsistent technical specifications of early electronic synthesizers, it was difficult to link different synthesizers. In August 1983, YAMAHA, ROLAND, KAWAI, and others Well-known electronic musical instruments Instrument manufacturers jointly specified a unified digital musical instrument interface specification, which is the MIDI 1.0 Technical Specification.Since then, a number of electronic synthesizers and electronic musical instruments, such as electronic pianos, have adopted this unified specification. , so that various electronic musical instruments can be linked together to transmit MIDI information and form a true synthetic music performance system.

Why are there so many video and audio formats, and is there a difference?

3.WAV format

The WAV format is the oldest digital audio format and is widely supported by the Windows platform and its applications. WAV supports many compression algorithms, supports a variety of audio bits, sampling rates and channels, adopts 44.1 kHz sampling rate and 16 quantization bits, so the sound quality of WAV is almost the same than CD, but WAV format requires too much storage space Not easy to communicate and broadcast.
Supplement: Lossless volume is large

4. Format
ASF ASF is a multimedia playback format formulated by Microsoft, suitable for playback on the Internet.
Supplement: rare format

5. Format
AAC AAC is actually short for Advanced Audio Coding. AAC is part of the MPEG-2 specification. The algorithm used by AAC is different from that of MP3. AAC improves encoding efficiency by combining other features. AAC’s audio algorithm far exceeds some older compression algorithms (like MP3, etc.) in terms of compressibility. It also supports up to 48 audio tracks, 15 low-frequency audio tracks, higher sample rates and bit rates, multi-language support, and higher decoding efficiency. In short, AAC can provide better sound quality on the assumption that MP3 files are 30% smaller.
Added: One of the best lossy formats out there. There are many encodings, faac and nero are common, and the bit rate is up to 448kbps. In terms of hardware support, advanced mp3 and mobile phones are generally supported.

6. Format
Mp3Pro Mp3Pro is an improved version of the Mp3 encoding format. MP3Pro is developed by the Swedish Coding Technology Company, which can also compress the volume of sound files to half the size of the original MP3 format while maintaining the same sound quality. Also, the sound quality of the original MP3 music can be improved basically without changing the file size. You can compress audio files to a lower bit rate and keep the sound quality before compression to the greatest extent possible. MP3pro can achieve full compatibility. The extension of the files compressed by mp3Pro remains .mp3. It can be played on old mp3 players. Old mp3 files can be played on the new mp3pro players.

Why are there so many video and audio formats, and is there a difference?

I found that there are many video and audio formats, what is the difference between them? Is there a player that supports most audio and video playback formats?

The difference lies in the encoding method. Original video and audio require a lot of storage space. In the era when the storage device was still in MB as a large drive, various lossy compression encoding formats began to appear. The difference between various encoding formats is the compression ratio. The pros and cons of height and reduction ratio.

Basically, there are more advanced encodings that can provide high-quality audio and video effects with higher compression ratio.

1. Format
MP3 MP3 uses MPEG Audio Layer 3 technology to compress music into a file with a smaller capacity at a compression ratio of 1:10 or even 1:12. Files are compressed to a smaller size. But also very good at keeping the original sound quality. It is precisely because of the small size and high sound quality of MP3 that the MP3 format has become almost synonymous with online music. The music per minute MP3 format is only 1 MB in size, so the size of each song is only 3-4 megabytes.

Supplement: the highest bit rate is 320K, and there is no high frequency part is its default. The sound quality is not high!

2. Format
WMA WMA achieves a higher compression ratio by reducing data traffic while maintaining sound quality. The compression rate can generally reach 1:18, and the generated file size is only half of the corresponding MP3 file. This is very important for models that only assemble 32M. It supports both WMA and RA formats, which means that the 32M space is virtually expanded by 2 times. In addition, WMA can also add copy prevention through the DRM scheme, or add restrictions on playback time and number of playbacks, or even restrictions on playback machines, which can effectively prevent piracy.
Supplement: 128 kbps is the optimal compression ratio of wma, 128 kbps wma = 192 kbps mp3

Are your ears worthy of your headphones?

Are your ears worthy of your headphones?…

The process of human hearing sound is very complicated.

But compared to the metaphysics of headphones and audio, the complexity of the human ear is basically not worth mentioning. But before we get into whether Beats is shallow, whether Sony is good, and whether headphone noise reduction is good for your ears, let’s take a look at what we’re talking about when it comes to sound quality. It may be that when you feel that the sound quality of a certain headset is not good, the problem is in your ears or in the sound file itself.

01 What is sound quality?

The essence of music and sound is the vibration of air, and sound quality is generally attributed to three aspects: volume, pitch, and timbre.

Everyone knows the volume and the tone is Do Re Mi Fa Sol La Ti. And what is the tone?

The American National Standards Institute defines timbre as “…a sensory attribute by which a listener can judge that two tones of the same volume and pitch are not the same.” We can tell the difference between a guitar playing a 440Hz tone and a piano playing a 440Hz tone.

The sound reproduced by different headphones is different, and the timbre is also different. However, in terms of volume, different headphones will also have a certain volume difference due to different internal circuitry; as for the tone, there is no obvious change without accident.

02Digital recording and analog recording

There is no doubt that pre-CD audio carriers: magnetic tapes, vinyl records, etc., are all analog recording products. The word “analog” is also translated as “analog”, in short, it restores and reproduces the vibration in the air at that moment in a physical way. Whether it’s vinyl or tape, physical features such as bumps, depressions, or magnetic dust splits on tape or disc are used to restore the vibrance detail of the audio.

But in the age of CDs and computers, all audio vibrations are converted to 0 or 1 on the surface of the disc and go into the so-called binary algorithm. After decoding, it is restored to physical vibration.

In popular music recordings, there are probably three most common formats:

44.1 kHz, 16-bit waveform

320kb mp3

128kb mp3

Mp3, is it the best format for music and sound?

People are looking for the best audio and video quality in 2022, what is it?

If you are seriously looking for high-quality audio and video, we advise you to stay away from the data-throwing fundamentalists and adopt a more practical attitude.

First of all you must ask yourself, on which devices will you listen to the audio or see the videos.

We have listened to dozens of fundamentalists who use numbers and certain statements as dogmas and have turned even this discussion of quality into a dogma.

And that is diametrically different from the simple my real aspiration to really enjoy the best audio and video quality that your equipment can deliver and that your eyes and ears are capable of detecting.

Mathematical statements are useless if you do not have an HD computer to listen to your audios and watch your videos.

Nor if the extreme is reached where the difference is already indistinguishable for 99.99% of the population.

It is fully demonstrated that for 99.99% of the population, even for those who have auditory training, an mp3 with 320 kbps and 48000 as sample rate is indistinguishable from a WAV or FLAC.

You can improve your audio with Mp4Gain regardless if you decide to continue using mp3s or prefer to switch to FLAC (Mp4Gain can convert and use these and other formats like ogg, m4a, etc)

In short, the discussion of sound quality should be based more on actually hearing the best possible audio and not a fundamentalist discussion about numbers.

The audio formats with the best sound quality

audio formats

In addition, when editing, because some details have been compressed and sacrificed, the editing space is relatively small.

audio formats

It should be noted that the sound quality will be compromised every time these formats are output. After too many output programs, the quality can be terrible, so the number of times of recompression and conversion should be reduced.

Pros: small file size, maximum device compatibility

Disadvantages: destructive compression leads to loss of sound quality, less spatial flexibility for reissue

Resume
When it comes to sound files for editing, it’s ideal to work with uncompressed formats like .WAV or .AIFF. Such a format allows users to get the greatest degree of tolerance and freedom when editing, and most of these file formats are still supported, regardless of software or equipment. Also, when the video is output at the end of the project, the music file will still be compressed, so it’s ideal to use a file format with higher sound quality from the start, which is ideal for a project that needs to go through post-edit layers. But if it is based on the premise of convenient, fast and easy-to-use transmission, .MP3 can still meet your needs without sacrificing sound quality.

Mp4Gain is a program that allows you not only to normalize the audio of your sound or cvideo files, but also to improve the quality and offers you to perform a whole series of modifications so that you have better audio quality used.

The audio formats with the best sound quality

First of all, divide all types of music files into three parts as follows:

Uncompressed file formats: .WAV, .AIFF

Lossless compression formats: .FLAC, .ALAC (Apple Lossless)

Destructive compression formats: .MP3, .AAC, .WMA, .OGG

Below are their respective advantages and disadvantages.

1. Uncompressed file format
Uncompressed music files are just like the concept of Raw files. Essentially no compression will of course have the best sound quality. (The sample rate and bit rate of the original recording are also very important. If the compressed music file is converted to an uncompressed file, the music won’t magically improve the sound quality.)

The most common disadvantage of uncompressed files is the file size. Generally, the file size of a song is around 25 ~ 40 MB. While that capacity is no longer an issue for cloud hard drives, it is still an issue for email. Also big (25MB max for Gmail attachments). Also, some portable music players or devices may not be able to play such music files.

Advantages: original sound reproduction, no compression, lossless, easier to use in post production

Disadvantages: large file format, fewer supported devices

2. Lossless compression format
The term “compressed and lossless” seems contradictory, but compression does not necessarily affect sound quality. More precisely, it’s more like “compressed to save space”. It’s like compressing a high quality file into a .ZIP and decompressing it when you want to use it, the quality of the file will not be affected.

Therefore, this type of file has a compressed capacity, but the file will be decompressed during playback to restore sound quality. Although the concept of reducing capacity without affecting sound quality is great, the downside is that support for this format is extremely low and in order to decompress the file during playback, an additional codec is required to use it, and it will. also take some performance.

Advantages: small file capacity (about 1/2 ~ 1/3 lossless files), good sound quality

Disadvantages: Decompression can eat performance when used, and support from hardware or software is extremely low

3. Destructive compression format
The destructive compression format is currently the most common music file format, the main reason is that it has the greatest compatibility with portable devices (mobile phones, MP3 players, etc.), and the files are small and have a space of limited storage. , users can store more music (compressed capacity is about one-tenth of lossless sound quality), and most of the music provided by today’s streaming media is files in this format. There is always a price to pay for smaller files. Compared to lossless formats, this destructive compression will affect the audio range that the original sound can present and will cause some distortion. So, to be safe, keep the compression rate above 320 kbps as much as possible.

Explore 4 main audio formats

Let’s take a look at the main audio formats and the differences between them.

The audio format is directly related to the quality and purpose of the audio track, i.e. where and on what device it will be played and what its purpose is.

However, before discovering the difference between them and choosing the best audio format for your music, you should know what categories they fall under. Let’s go ahead!

Uncompressed audio is like a picture, uncompressed audio is better quality, larger in file size and safer to copy, with nearly the same detail as the original sound.

WAV is the most widely used audio format of this type and reproduces music with precision similar to that of a recording.

compressed audio
When music is compressed, the file is smaller and can be easily stored on your device. Because of this advantage, compressed audio is often more of an option for users.

However, it should be remembered that some audio formats in this category may lose quality depending on the option selected, just like MP3 and AAC .

What is the best audio format?
As we said before, the first step in deciding on an audio format is to know the final objective of the track. Whether it’s for music lessons, performances, karaoke, auditions, or recording versions, you need to understand the pros and cons of each option.

WAV
WAV (Waveform Audio File Format) is an uncompressed format, therefore sufficient storage space is required. This is for those who already work with music, such as experts in the field or users who want to edit audio.

At high fidelity, WAV faithfully reproduces the elements and character of the original soundtrack. Furthermore, this format allows the selection of different bit and sample rates, and can be used on multiple platforms.

FLAC
FLAC (Free Lossless Audio Codec) is one of the most widely used compression formats by music lovers today.

Digital audio encoding allows you to preserve its quality, but the resulting file will be smaller. Over the years, this format has become more widely used and is compatible with different devices and platforms.

FLAC is free and open source, ready to use and can be easily played on smartphones and other devices.

MP3
Before deciding on the best audio format, it is worth taking a look at the most famous format in the music world: MP3.

MP3 is one of the main audio compression formats, and has become synonymous with the convenience and efficiency of generating files quickly, with smaller files and a certain level of quality.

Many devices and programs can play this format. But MP3 is difficult to use in professional audio processing and advanced audio editing.

As is known, this format exists on almost all platforms and is ideal for sharing audio.

Another interesting factor is its bit rate, although it is a compressed format, it can vary depending on the user’s goals and improvements in quality.

AAC Like MP3, Advanced Audio Coding (AAC) is a more efficient audio format than its predecessor.

To create smaller files with less storage space, AAC is a great option for users to reduce file size and keep high-quality audio tracks.

[Music] File format types Part 3

[Music] File format types Part 3

Lossless compression format

This format compresses the original data while preserving it.

FLAC
A THE C
During playback, it can be decompressed and returned to the original uncompressed format, so the sound quality is the same as the original data.

Although the file size can be reduced compared to the uncompressed format, it is still about half, so the file size is larger than the lossy compressed format and it takes longer to encode and decode.

Also, at present, it is often not handled by major music distribution sites, and the number of devices that can play it is less than that of uncompressed formats. The most common of these formats is “FLAC”, and Apple uses a unique format called “ALAC”.

FLAC (Free Lossless Audio Codec)
A lossless audio codec developed as open source.

It is not subject to patent restrictions, is not owned by any company, and has no license fees for its use.

Also, the sampling frequency is 1Hz – 655.3kHz (655,350Hz), and the number of quantization bits is 4 to 32 bits, so the so-called high-resolution music (including the frequency elements beyond the range human audible) can also be encoded. . However, since it is lossless, the compression rate is low and the file size is only about half. First of all, iOS 11 now supports playback from the “File” app.

ALAC (Apple Lossless)
Apple Lossless is a lossless compression format developed by Apple for iPod.

It can maintain the same sound quality as a music CD, but the compression ratio is not as good as lossy compression formats like MP3. With lossy compression, the deterioration in sound quality is noticeable, so it may be better to use it for classical music only.

This format was released as open source on October 27, 2011. You can use it freely under the free Apache license.

Relationship between bit depth, sample rate, and bit rate
Music data has numbers like bit depth and sample rate that indicate the amount of music data per second.

And the product of the two is the “bit rate”.

Sampling rate
Also known as the sample rate. Shows how many tens of thousands of sounds are collected per second.

The higher the value, the greater the number of divisions, which results in a smoother sound and improved sound quality.

By the way, the CD is 44100Hz.

Bit depth
Also known as quantization bit count, bid reduction, sample bit count.

This shows how much capacity is given to the split data.

The louder the sound, the better the sound and the sound quality will be improved.

The CD is 16 bit.

Bit rate
It is displayed as bps and shows the amount of data per second.

It is the product of the “sample rate” and the “bit depth” mentioned above.

In the case of a stereo file, there are two sounds, so if you formulate it …

Sampling rate (Hz) x bit depth (bits) x 2 = bit rate (bps)

A high bit rate means that the “sample rate” and “bit depth” are large and the sound quality is good.

By the way, in the case of CD

44100 (Hz) x 16 (bits) x 2 = 1411200 (bps)

Will be.

Why is there so much format
Each has its advantages and disadvantages, and you can make better use of your data by using it correctly.

For example, if you want to save this album with the best sound quality because you don’t care about the amount of data, import it with “WAV” or “AIFF” and save it with the highest possible bit rate. If you have a compatible device, “FLAC” and “ALAC” are also storage saving options.

“Sound quality is secondary! I want to import a lot of songs to my smartphone!” For those who want to import with “MP3”, they can import at as low a bit rate as possible (although 128 kbps or less is not often used as a music file). It may be convenient to use music as data according to the style.

By the way, the Apple Music I use is 256kbps of “AAC”, so it can be said that it is a format that emphasizes the balance between sound quality and data savings.