1, CDA format
When it comes to audio format, CD is naturally the forerunner. In the "open file type" of most playback software, you can see *. Cda format, that is, CD audio track. In fact, the songs on the record are not the files we usually understand. You know, when the CD recording format standard was determined, it was one step earlier than the CD format used on the computer.
2.WAV waveform audio format
WAV is a PC standard sound format developed by Microsoft and IBM. The file suffix is. Wav, this is a universal audio data file. WAV format is usually used to save some uncompressed audio, that is, the audio after pulse code modulation, so it is also called waveform file, which is stored according to the waveform of sound, so it takes up a large storage space.
3.MP3/MP3 professional format
MP3 is an audio compression technology, the full name of which is Audio Level 3, the compression standard of moving picture experts. It aims to greatly reduce the amount of audio data. Using the technology of MPEG Audio Layer 3, music is compressed into files with smaller capacity with the compression ratio of1:1even 1: 12, but for most users, the sound quality of playback is not obviously reduced compared with the original uncompressed audio.
4.WMA format
WMA is a new audio format introduced by Microsoft. Because WMA surpasses MP3 in compression ratio and sound quality, it can produce better sound quality even at a lower sampling frequency. Generally, WMA is used as the extension of files using Windows Media audio encoding format, and WMA is also used as the extension of some pure audio ASF files that use Windows Media audio encoding format to encode all their contents.
5.RA format
RA uses lossy compression technology, because its compression ratio is quite high, so the sound quality is relatively poor, but the file is also the smallest, so it performs well in the case of high compression ratio, but it does not perform as well as other file formats of the same type in the case of medium and low compression ratio. In addition, RA can also change the sound quality with different network bandwidths, allowing users to improve the sound quality as high as possible on the premise of obtaining smooth sound.
6.MIDI format
People who often play music should often hear the word MIDI. This technology was originally applied to electronic musical instruments to record musicians' performances for later replay. However, with the introduction of sound cards supporting MIDI synthesis in computers, MIDI has officially become an audio format. The MID file format is inherited from MIDI. It is not recorded sound, but a set of instructions that record sound information and then tell the sound card how to reproduce music.
7.OGG(Ogg Vorbis) format
Ogg is a relatively 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. An outstanding feature of OGG Vobis is that it supports multiple channels. With its popularity, it will not be a dream to listen to DTS-encoded multi-channel works with walkman in the future.
8.APE format
APE is one of the popular digital music file formats. APE is a lossless audio compression technology, that is to say, when you compress the audio data file read from the audio CD into APE format, you can also restore it to APE format, and the restored audio file is exactly the same as before compression, without any loss. APE's file size is about half that of a CD. With the popularity of broadband, APE format has been loved by many people.
9.FLAC format
Similar to MP3, FLAC is audio compression coding, but FLAC is lossless compression, which means that audio will not lose any information after FLAC coding compression. After FLAC file is restored to WAV file, it is the same as WAV file before compression. This compression method is similar to ZIP, but the compression ratio of FLAC is higher than ZIP and RAR, because FLAC is a compression method specially designed for PCM audio.
10, AAC format
AAC is actually the abbreviation of Advanced Audio Coding. Apple ipod and Nokia phones also support audio files in AAC format. AAC consists of Flawn Hof IIS-A, Dolby and AT&; An audio format developed by T * * * is a part of MPEG-2 specification. The algorithm adopted by AAC is different from MP3, and AAC improves the coding efficiency by combining other functions.