Advantages and disadvantages of MP3 technology.


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In the internet age, MP3 has become a de facto standard for digital audio files. Napster’s popular peer-to-peer application allowed music lovers to exchange MP3 files so they could get songs without paying for it. This article is written to guarantee the pros and cons of MP3, to help you decide whether to convert your existing music files to MP3 in a different format or not.

mp3 advantages

Advantages of MP3

The advantage of MP3 is the high quality. The quality of an MP3 file is determined by the bit rate. Flow is measured in kilobits per second. The bit rate of an MP3 file can range from 8 kbps to 320 kbps. You should keep your songs at 160 kbps if you don’t really like them and don’t put them at the top of your list of mp3 players. Keep your songs at 192 kbps if you like them a bit. Use 256 kbps for the songs you like. And use 320 kbps for your all-time favorite songs. Regardless, even an 320kbps MP3 doesn’t sound as good as the song’s WAV file version. But a 320kbps MP3 takes up four times less space than a WAV file. To use an analogy, an MP3 file is a WAV file, which is a JPEG image of a BMP image.

Problems

The second advantage is that it can be played on many types of devices, such as CD players and Apple iPods. You can also play MP3 files with multimedia players such as Winamp, Windows Media Player or QuickTime. The third advantage of MP3 is ID3 tags. The ID3 tag of an MP3 file stores the artist name, song title, year, and genre. You can also create your own playlists.

Another advantage of MP3 is that encoding is simple. It is easy to rip audio CDs and burn as easily as regular MP3 CD-Rs. The encoding speed is also very fast, but it also depends on the speed of the CD player. Producing MP3 files takes very little time. You can use lossless audio compression if you have a lot of free disk space and lossy audio compression if you have little free disk space. The MP3 LAME encoders are free and open source, so that everyone can contribute to their development.

Another plus of MP3 is that the layout is simple. MP3 can be downloaded from HTTP or FTP sites. You can also distribute MP3 files through portable storage devices such as USB flash drives. You can also buy MP3s from online music stores such as iTunes and eMusic.

You can also use a server to distribute these files. Listening to it in MP3 uses an M3U playlist format such as (which means MP3 URL) or PLS. MP3 streaming is also used by internet radio stations. You can integrate MP3 streams with a Flash player. You may have different rates for dial-up and broadband connections. MP3 audio is not stored on your hard drive.

MP3 problems

A disadvantage of MP3 is that it takes up a lot of storage space. Since an MP3 file generally takes up to 5 megabytes (MB) of disk space, the number of files it can store is limited. Due to the relatively large size of an MP3 file, the slow file can also be downloaded if you have a slow internet connection.

Another problem is that the song can jump to random places. This happens especially if you have a slow computer and use multiple programs that load the processor at the same time. It is technically not free. You also need an MP3 decoder if you want to convert MP3 audio files to WAV format. The MP3 format has very little security available. For example, people who used the Morpheus file sharing service had their computers accessible to hackers.

Another limitation is that this file is not the best fidelity format for audio files. Other audio formats, such as Ogg Vorbis and Advanced Audio Coding (AAC), are superior in quality to MP3. AAC is the format used in the Apple iTunes player. However, MP3 is still the most popular audio format in the world.

The pros and cons of MP3, which I just mentioned will help you make a good decision before downloading music next time.


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WMA – Everything about WMA (1)

Windows Media Audio (WMA) is an audio codec (in addition to an audio container format) developed by Microsoft Corporation to end MP3’s hegemony as the standard codec for consumer audio. In fact, the format promised the Same quality as MP3 using only half the bitrate and, in addition, it claimed to achieve CD-Audio quality with a bitrate of only 64Kbps.

Files encoded with this codec and stored in the WMA container have the .wma extension.

It was created in the late 90’s at the Microsoft Signal Processing Center and was initially known as MSAudio 4.0 (released in 1999) and later renamed WMA version 1. Numerous versions followed one another until reaching the current version, version 9. (released in 2003). Today it is one of the most popular because it is the standard format of the Windows Media player (included in the ubiquitous Windows operating system), one of the most popular at the user level. This program allows both the reproduction and the creation of files (only from version 7 of this program) encoded with this format. It is also the standard format for the Zune Portable audio player, the popular competitor to Apple’s even more popular Ipod.

Currently there are 4 different versions of Windows Media Audio:

Windows Media Audio: Currently in its version 9 (released in 2003) it is the best known of the 4 codecs that make up the WMA family. It is a lossy codec that bases the elimination of information from the original signal on psychoacoustics and the “defects” of the human ear (those sounds that are considered inaudible are eliminated in the coding process). If the bitrate is low, a lot of information from the original signal will have to be discarded which can cause the sound of the signal encoded in wma to be different from the original and present some errors.

To implement WMA coding, a sampling rate of up to 48,000Hz is used with two independent stereo channels, variable bitrate (VBR, which assigns a higher bitrate to the more complex sections (transitions from bass to treble faster, sudden volume changes etc)) and the average bitrate technique in which not all sections are transmitted to the same bitrate (as in VBR) but in every second the same information is always transmitted in total (as with bitrate constant) .Thanks to these 2 techniques we will have the same quality throughout the audio file. Both VBR and medium bitrate are only available as of WMA 9.

In addition there is a low delay version (only from WMA 9.1) for bidirectional (Full-duplex) applications such as VoIP.

Like the rest of the audio codecs for music such as MP3, Vorbis, AAC or ATRAC, it is based on the Modified Discrete Cosine Transform (MDCT) to transform the signal from the temporal domain to the frequency one. Finally, the samples are encoded with the Huffman algorithm. In addition, a joint audio technique known as stereo M / S encoding is used (see description) .In addition, when the bitrate is extremely low, sample prediction techniques such as LSP (Line Spectral Pairs) or LSF (Line Spectral Frequencies) are used. .
All these characteristics are reflected in the conclusions of some studies on audio codecs:
For a 32Kbps bitrate the quality is better than that of its direct competitor: Mp3.
For 48kbps bitrate the WMA Pro quality is the second best of all codecs, just behind HE-AAC version 2.
At 64Kbps WMA Pro Bitrate Outperforms HE-AAC in Quality
At a bitrate of 80Kbps and 96Kbps WMA lost in quality compared to HE-AAC, Vorbis and AAC-LC
At 128Kbps the quality of WMA Pro is equal to that of its competitors AAC, MP3 and Vorbis
At 768Kbps bitrate WMA Pro gets spectral response across the spectrum while DTS (Digital Theater Systems) needs twice the bitrate to do it. At these high bitrates, all lossy codecs achieve transparency, that is, a totally perfect quality where the differences from the original signal are imperceptible to the human ear.
For a much more extensive comparison, SoundExpert can be consulted.

Being a format developed by a multinational as powerful as Microsoft, almost all the players allow you to work with WMA, both portable, desktop and computer players, although the ideal WMA environment is to use the Zune portable player and the player for the Windows operating system, Windows Media player (its latest version is 11).

One of the most controversial aspects of the format is that it incorporates DRM (Digital Rights Management), which limits the distribution of copyrighted files encoded with this format.