Common audio formats are: CD, WAVE, AIFF, MPEG, MP3, MPEG-4, MIDI, WMA, RealAudio, VQF, OggVorbis, AMR, APE, FLAC, AAC.
Differences in sound quality:
1. The sound quality of CD format is a relatively high audio format. Therefore, when it comes to audio formats, CD is naturally the pioneer.
2. WAVE is a sound file format developed by Microsoft. It complies with the PIFFResource Interchange File Format file specification and is used to save audio information resources of the WINDOWS platform. It is supported by the WINDOWS platform and its applications.
3. AIFF (Audio Interchange File Format) format and AU format, which are very similar to WAV, are also supported by most audio editing software as common music formats.
4. MPEG is the abbreviation of Moving Picture Experts Group. This expert group was founded in 1988 and is responsible for establishing video and audio compression standards for CDs. MPEG audio files refer to the sound part of the MPEG standard, the MPEG audio layer.
5. The MP3 format was born in Germany in the 1980s. The so-called MP3 refers to the audio part of the MPEG standard, which is the MPEG audio layer.
6. The MPEG-4 standard is a video compression standard for multimedia applications announced by the International Moving Picture Experts Group in October 2000.
7. MIDI format MIDI allows digital synthesizers and other devices to exchange data. The MID file format is derived from MIDI. A MID file is not a piece of recorded sound, but a set of instructions that records sound information and then tells the sound card how to reproduce the music.
8. The WMA (Windows Media Audio) format is a heavyweight player from Microsoft. It has a strong backend and its sound quality is better than the MP3 format and even better than the RA format.
9. RealAudio is mainly suitable for online music appreciation on the Internet. There are several main file formats of real: RA (RealAudio), RM (RealMedia, RealAudio G2), RMX (RealAudio Secured), etc.
10. The core of VQF is to achieve a higher compression ratio by reducing data traffic but maintaining sound quality. The audio compression rate of VQF is nearly twice as high as the standard MPEG audio compression rate, and can reach Around 18:1 or even higher.
11. OggVorbis is a new audio compression format, similar to existing music formats such as MP3. But one thing is different: it is completely free, open and patent-free.
12. The full name of AMR is Adaptive Multi-Rate, which is adaptive multi-rate coding. It is mainly used for the audio of mobile devices. The compression ratio is relatively large, but the quality is relatively poor compared to other compression formats because it is mostly used for human voices. ,call.
13. APE is one of the currently popular digital music file formats. Unlike lossy compression methods such as MP3, APE is a lossless compression audio technology.
14. FLAC is similar to MP3 in that they are both audio compression encodings, but FLAC is lossless compression, which means that the audio will not lose any information after being compressed with FLAC encoding. After restoring the FLAC file to a WAV file, The same content as the WAV file before compression.
15. AAC is actually the abbreviation of Advanced Audio Coding. Apple iPod and Nokia mobile phones also support audio files in AAC format. AAC is an audio format jointly developed by Fraunhofer IIS-A, Dolby and AT&T. It is part of the MPEG-2 specification.
Extended information
AAC's advanced audio coding format has become the actual mode for downloading music on mobile phones.
With the emergence of MP3, the carrier of songs is no longer limited to inherent objects such as cassettes and CDs. An MP3 player the size of a matchbox can store hundreds of popular songs. However, with the innovation of technology, MP3 cannot escape its fate.
Nowadays, as the music playback function of smart phones becomes more and more mature, people are accustomed to plugging in headphones to listen to their phones. The AAC format is more powerful than MP3 and has a much lower bit rate than MP3. It can eliminate programs that are imperceptible to the human ear and takes up less memory.
Baidu Encyclopedia-Audio Format
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