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What are the differences between MP3, FLAC and other audio formats?

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What are the differences between MP3, FLAC and other audio formats?

FLAC vs MP3

Digital audio has been around for a long time, so many audio formats can certainly be found. Here are some of the most common, what sets them apart and what to use them for.

FLAC vs. MP3

Before talking about everyday audio formats, it is important to understand the basics, what it means to understand PCM. After that, we will tackle compressed formats.

PCM audio: where it all begins

Pulse code modulation was created in 1937 and is the closest approximation to analog sound. That is, the analog signal approaches at regular intervals. PCM has two properties: sample rate and bit depth. The sample rate measures the frequency (per second) that the amplitude of the signal is taken and the bit depth measures the possible digital values. In terms of audio formats, this is pretty much the base.

True sound in the real world is continuous. This is not the case in the digital world. In some ways this is more confusing for audio than video, so let’s take a look at the video for comparison. What we interpret as “movement” or think as “fluid” and in constant motion is actually a series of still images. Also, the amplitude of digital sound waves is not “smooth” or constantly changing. It changes based on certain criteria at predetermined intervals.

I know there are a lot of things here that might not be second nature unless you’re an engineer, a physicist, or an audiophile, so let’s make a little analogy.

Let’s say the water coming out of an open tap is your “analog” sound source. We can compare the temperature of the water with the amplitude of a sound wave; It is a property that must be measured in order to enjoy it properly. Sampling is the number of times per second that you place your finger in plain water. The more often you put your finger on it, the more “continuous” the temperature changes will be. If you put your finger in running water 44,100 times per second, it’s like keeping your finger there all the time, right? This is the basic idea behind sampling.

Bit depth is a bit trickier. Instead of using your finger, let’s say you actually used a thermometer. Basically it said “Hot” for anything above room temperature and “Cold” for anything below. No matter how many times you put it in the water, it won’t give you much useful information. Now if instead of two choices, let’s say a thermometer has 16 possible values that you can use to measure the temperature of the water. More useful, right? Bit depth works in the same way, as higher values allow more dynamic changes in the amplitude of the sound to be accurately displayed.

As mentioned above, PCM is the foundation of digital audio, along with its variants. PCM tries to simulate the waveform of glory uncompressed as much as possible. It’s special, it’s ready to get stuck in a DSP and more or less universally playable. Most other formats manipulate the audio using algorithms, so they need to be decoded during playback. PCM audio is considered “lossless”, it is not compressed and therefore takes up a lot of hard disk space.

Uncompressed packet: WAV, AIFF

Both WAV and AIFF are PCM-based lossless audio container formats with minor changes to the data store. PCM audio for most people comes in these formats, depending on whether you are using Windows or OS X, and they can be converted to each other without any degradation in quality. Both are also considered “lossless”, they are uncompressed and a stereo PCM (2ch) audio file sampled at 44.1 kHz (or 44,100 times per second) with 16 bits (“CD quality”) is approximately 10 MB for a minute. If you are recording

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FLAC versus MP3: Does it make sense to use a “lossless” audio codec?

Free Lossless Audio Codec (FLAC) is an audio format that is unknown to the public, but is particularly loved by the most demanding audiophiles: unlike MP3, AAC and their partners, FLAC is lossless, which means that it compresses audio with no loss of information. The advantage is the superior quality and the certainty that a 1: 1 copy of the original can only be made from the files. The disadvantage is that the tracks “weigh” significantly more. Is it a winning engagement or not?

Let’s go to the conclusions

If you have original, rare and / or valuable audio recordings that you want to keep indefinitely for years (even if the original media wear out), FLAC is the optimal choice.

But if you only make it a matter of quality, think twice about it: it might not be worth it.

Never convert from MP3 to FLAC – it would take up extra space for free.

FLAC is … an audio codec

Let’s start with FLAC being an audio codec: that is, it is used to compress music or other sound sequences so that they take up less space than storing the same information directly.

To get an idea of how basic this is, keep in mind that an hour of uncompressed audio (no video) takes 620MB.

FLAC is … “free”

Then there is the word “free” which should be interpreted as “free” and “free”. FLAC is distributed in open source mode (GPL license). This means that its specifications can be used by anyone without paying any commission.

In contrast, there are MP3s that must be used within software and device manufacturers by Thomson Consumer Electronics and the Fraunhofer Society.

FLAC is … lossless

The third aspect concerns the type of compression used. While MP3 and AAC reduce the weight of the file by permanently eliminating frequencies and nuances that are generally unrecognizable to the human ear, FLAC retains every last bit present in the source and then applies only a number of specific optimizations, before the file is saved result in reducing the size on the hard drive. When the file is opened, however, the process is reversed and FLAC returns the original audio perfectly.

The procedure is similar in many ways to that of compressing in zip format: when the file is unpacked, we get the perfectly preserved initial file again. The difference is that FLAC was specially developed for working with audio and significantly reduced the size of the source file.

Lossless = quality + flexibility

Audiophiles complain that the “cuts” in the MP3 codec are too heavy and that the quality is unacceptably affected. In contrast, the performance at FLAC corresponds 100% to the original “master”.

Added to this is the aspect of optimal data storage: FLAC supporters point out that a “ripped” CD in this format can later be recreated from the files themselves and that a bit-by-bit result is achieved that corresponds to the original. However, the same procedure used for MP3 extraction would produce a different, lower quality disc.

The disadvantages: size and compatibility

The disadvantage is that FLAC files in megabytes are much heavier than compressing them with MP3. Although the actual efficiency depends on the sound characteristics of the respective source, an average reduction of 40-50% can be expected: For example, an hour of audio ranges from approximately 600 MB of the uncompressed format to 300 MB in the optimal case

With MP3, compression is much more intensive – the same hour of compressed audio at 160 kbps (or very high quality anyway) is expected to be around 70 MB.

Then there is the compatibility problem: MP3 is natively compatible with any Smart TV, radio, PC, smartphone or media player that is still in circulation. FLAC, on the other hand, can only be played natively on Android, Linux and Windows 10. On the other platforms, if possible, you need to download a dedicated player or convert songs in advance.

Flac vs Mp3, differences

In today’s world, it is important to understand the difference between the different audio files available.

The most common and current files are practically the files in the formats MP3, Flac and WAV.

Is there really a difference between MP3, Flac and WAV files? The answer is absolutely yes.

The difference is in the audio quality that these files can play.

What is the difference between MP3, Flac and Wav files? MP3 files are of lower quality because they are more compact and smaller. Flac files are a kind of compromise. With files in Flac format, it can be of very good quality and remain true to the original, which in any case is compressed by a certain percentage. Finally, there are the WAV files that do not use compression.

Therefore, the quality is better, but the size of these files is quite large, it is not compatible with any device these days.

It may not be easy to understand which audio file to use for your work, especially if you are a beginner in this area.

However, you don’t have to be afraid of it.

Once you’ve learned all the differences between the three audio files, you can really fix the problems by always using the appropriate file.

What are the differences between the categories in detail and when should you use a specific audio file?

Here’s a complete analysis for each audio file format that really helps you understand everything you need to know about MP3, Flac, and WAV files.

What is an MP3 file?
It starts with one of the most common files in the world of information technology, namely the one called MP3.

MP3 files have been around for years, so their development is common.

But what an MP3 file really represents.

Well, a general audio file is a series of numbers obtained by sampling the analog signal.

This scan responds to some parameters, which are the frequency measured in Khz and the resolution expressed in bits.

The MP3 file represents the most compressed form of an audio file, so to speak.

Finally, you need to understand that the MP3 file can remove all unnecessary parts of the digital file from the sequence and the final sampling, taking advantage of some imperfections of the human body to give it a clear and clean melody.

On the other hand, the MP3 file significantly reduces the quality of the sounds played.

In fact, all the different nuances of a certain melody come to the bone.

An MP3 is small if you speak it from the perspective of the memory. You should think of it as a kind of concentrate that gives you a remarkable but not 100% complete end result.

In the most extreme cases, an MP3 file can reduce the original tones and nuances of music or melodies to a percentage of 90%.

However, these formats are widely appreciated and used because they are not only practical and direct, but are now compatible with all technological devices, e.g. B. MP3 players, for which we recommend that you read our guide.

This means you can take them with you at any time and any product you have can read an MP3 file.

What is a flac file?
So at this point you need to understand what a Flac file is.

Well, it should be said that the Flac file has some major differences from its MP3 counterpart.

In fact, a Flac file is much more complex than a regular file and can be reduced by 90%.

First, you need to understand that Flac is actually an acronym that stands for Free Lossless Audio Codec.

It is always a format that is somewhat compressed, but files with this name have a certain property.

In fact, the file is lossless with no loss and maintains higher fidelity than the original sound.

With a Flac file, you have a clearer quality of the audio file, so you can clearly hear some details that can be lost if you use a different audio format.

The limited storage space when using the Flac format is very small and can reach a maximum of 50%.

However, when using such files, you should be aware that their use on the storage hard drive is important.

Not surprisingly, Flac files take up a lot more space than regular MP3s. In some cases, a special reader must be downloaded to read them. Many home theaters and receivers support this compression format.

Impossible to detect the difference between MP3 and FLAC

New comparative study carried out by experts debunks the myth that the FLAC sound (Free Lossless Audio Codec (FLAC) or Codec free lossless audio compression, is considerably better than that obtained in MP3 or AAC files.

According to Wikipedia, FLAC is a format of the Ogg project to encode audio without loss of quality; that is, the initial file can be completely recomposed, although with the disadvantage that the resulting file takes up much more space than would be obtained by applying lossy compression.

Other formats, such as MP3 or ACC (Advanced Audio Coding), irreversibly lose part of the original information when compressing the file, in exchange for a great saving in file size.

The site Trusted Reviews has published an analysis called “Sounds Good to Me”, the conclusion of which is that there is no considerable difference in sound in FLAC and MP3, at least for the average user’s auditory perception.

In their study, Trusted Reviews made the assumption that there is a difference, and that people with developed hearing abilities could hear the difference between a 192 kbps MP3 file and a FLAC file, both obtained from the same original CD.

Only one user notices the difference between Mp3 and FLAC

The previous assumption was not confirmed in the facts, since among the seven people who participated in the analysis there was only one who detected the difference between FLAC and MP3. In many cases, MP3 at a rate of 192 kpbs had a higher score than FLAC.

This result was further strengthened when comparing 320 kbps MP3 files with FLAC files, since half answered correctly, and half were wrong. The percentage of participants who preferred MP3 was even higher.

The trial used an iBasso D3 Python USB DAC and Beyer Dynamic DT770 Pro headphones.

It should be noted that studies of this type have a certain margin of error. According to experts in comparisons such as the one carried out by Trusted Reviews, there are psychological factors, such as many users quickly forgetting their perception of what they have just heard, so the order in which the test is carried out is highly relevant. Non-expert users are also influenced by their mood and, in fact, by the music they listen to.