1, CD is the abbreviation of English Compact Disc, which means laser disc. Its technical term was originally "digital precision recording and playback system". It can be said that the sound quality of audio files is the best, but its biggest weakness is its large capacity.
2. Ogg is a new audio compression format, similar to existing music formats such as MP3. But one difference is that it is completely free, open and without patent restrictions. Vorbis is the name of this audio compression mechanism, while Ogg is the name of a project to design a completely open multimedia system. At present, this plan has only realized Ogg. The extension of Ogg Vorbis file is. OGG。 The design format of this file is very advanced. The OGG file created now can be played on any player in the future, so this file format can be continuously improved in size and sound quality without affecting the old encoder or player.
3. MP3 is the first practical lossy audio compression coding. Before the appearance of mp3, the compression ratio of general audio coding can reach 4: 1 even though it is lossy compression, which is very good. But mp3 can achieve the compression ratio of 12: 1, which makes mp3 popular rapidly. The reason why mp3 can achieve such a high compression ratio while maintaining a fairly good sound quality is that it uses perceptual audio coding technology, that is, it uses the characteristics of human ears to cut off the components that human ears can't hear, while maintaining the original sound quality as much as possible. Of course, the extension of MP3 is MP3 compressed file. The full name of MP3 is actually MPEG Audio Layer-3, not MPEG 3. MP3 is the most popular music file at present because of its high compression (1 minute CD music usually needs 1M bytes) and good sound quality. There are many websites on the Internet that can download MP3 and exchange music through some exchange software (such as Napster). However, due to the strong resistance of the music industry (copyright issues), these services are under pressure to close or change to fee-based services. The most famous software for playing MP3 is WinAMP.
4.ASF and WMA are a new generation of streaming digital audio compression technologies developed by Microsoft for Real. This compression technology is characterized by meeting the requirements of fidelity and network transmission at the same time, so it is advanced to some extent. It is also because of the influence of Microsoft that this audio format is now supported more and more, such as WinAMP mentioned above. You can also use Windows media player.
5. WAV is an audio format provided by Microsoft Windows itself. Due to the influence of Windows itself, this format has become a de facto universal audio format. To put it bluntly, it is actually a clone version of the Apple computer in AIFF format. Usually we use WAV format to save some uncompressed audio, but in fact the design of WAV format is very flexible (very complicated), and the format itself does not conflict with any media data. In other words, with software support, you can even store pictures in WAV format. The reason for this is that each piece of data stored in the WAV file has its own independent identifier, which can tell users what data it is.
6, mp3PRO format is compatible with mp3, so its file type is also mp3. Mp3PRO player can support playing mp3PRO or mp3 encoded files; Ordinary mp3 players can also support playing mp3PRO encoded files, but only play mp3 sound quality. However, although mp3PRO is an excellent technology, it has not gained great popularity due to the patent cost and competition from other technology providers such as Microsoft. You can download the demo playback/compression tool and Winamp playback plug-in from the website of Coding Technologies. Now there are many professional audio editing software, such as Cool Editing Pro 2.0, which supports mp3PRO format, but the player is basically gone except the music matching Juke Box mentioned just now. Most importantly, mp3PRO has lost its popularity because Microsoft's media player doesn't support it. Some time ago, Coding Technologies introduced the latest MPEG-4 aacPlus, and applied SBR technology to AAC (Advanced Audio Codec) technology, achieving better sound quality. Coding technology also indicates that SBR will become the core technology of MPEG-4.
7. rm is one of the popular mainstream multimedia file formats on the Internet at present. This kind of file can only be played normally by using a player based on the RealMedia engine developed by RealNetworks (such as RealPlayer).
8.Real format is the network audio and video solution of RealNetworks. Due to the high compression ratio, people can listen to audio and watch video online in real time by using streaming media technology.
9. APE is the only recognized lossless audio compression format in the world. Because its sampling rate is as high as 800 kbps ~ 1400 kbps, which is close to 14 1.2 kbps of music CD and much higher than 128kbps of MP3, the sound quality after compression is almost the same as the source file. Its excellent sound quality has passed the strict blind listening test and has been recognized by enthusiasts all over the world. Listening to APE will make you feel like a paradise and better understand the connotation of music.
10, mod (abbreviated as mod) is a digital music file, which consists of a set of samples (sound samples of musical instruments), score and time sequence information, and tells a mod player when and at what pitch to play a sample of a certain track, with some vibrato and other effects. Therefore, mod is not only different from pure sample files such as WAV or AU, but also different from MIDI files that do not carry any additional samples/instruments (somewhat similar to MIDI that supports DLS technology now, but the volume of mod is much smaller than DLS MIDI. )。 MOD originated from Amiga computer, and the file extension at that time was mod. In order to distinguish specific types from the whole structure system, mod is usually used to represent the whole module format system. Because this format originated very early, it used to be very popular, because mod provided a very cheap way to make music with acceptable sound quality. Moreover, for the computer hardware level at that time, the sound quality effect of this file is better than MIDI, and the file size is not large, so the benefits are easy to see. With the use of high-quality audio hardware, the sound quality of the new generation mod can even be upgraded to the level of professional equipment. This makes mod a mixture of pure sample data files such as WAV or VOC and pure time sequence information files such as universal MIDI, and becomes a more flexible audio format.
1 1, the full name of MIDI is musical instrument digital interface. MIDI enables people to use multimedia computers and electronic musical instruments to create, enjoy and learn music. MIDI consists of communication protocol, connector (hardware interface) and its propagation format, which is called standard MIDI file.
12, VQF is an audio compression format developed by Yamaha Company of Japan using the technology of NTT Company, aiming at MP3. The main selling point is that the compression ratio is higher than MP3 and the sound quality is better than MP3 (Yamaha himself and his supporters say that it is not equal to me). However, because VQF is Yamaha's proprietary format and its support (player) is quite limited, its influence is not as good as MP3. VQF needs Yamaha's VQF players to play. Other players, such as WinAMP, need to install plug-ins to play.
13 ~ ~ ~ I believe my answer will satisfy you!
Realplayer and windowsmedieplayer can basically play all audio files!