What are the common music formats?

Question 1: What are the common audio file formats? 1. AU format. Audio format developed for UNIX systems. 2. AIFF format. An audio format developed by Apple. 3. VQF format (Doomsday Yellow Flower). Audio format developed by Yamaha Corporation. 4. CD format (sounds of nature). The best sounding audio format in the world today. 5. APE format (lossless compression). APE is one of the currently popular digital music file formats. 6. MP3 format (popular trend). Born in Germany in the 1980s, the file size is small. 7. RealAudio format (flowing melody). Mainly suitable for online music appreciation on the Internet. 8. WMA format (the most powerful enemy). Microsoft's high compression rate audio format suitable for online playback on the Internet. 9. MIDI format (composer’s favorite). A MIDI file is a recorded file that records sound information. 10. WAV format (lossless music). A widely popular sound file format on PCs developed by Microsoft.

Question 2: What are the audio formats and what are the differences? 1. MP3 format

The full name of MP3 is Moving Picture Experts Group Audio Layer III. Simply put, MP3 is an audio compression technology. Since the full name of this compression method is MPEG Audio Layer3, people call it MP3 for short. MP3 uses MPEG Audio Layer 3 technology to compress music into files with a smaller capacity at a compression rate of 1:10 or even 1:12. In other words, it can compress the file to a smaller size with little loss of sound quality. To a small extent. And it also maintains the original sound quality very well. It is precisely because of the small size and high sound quality of MP3 that the MP3 format has become almost synonymous with online music. The MP3 format of music per minute is only about 1MB in size, so each song is only 3-4 megabytes in size. Use an MP3 player to decompress (decode) MP3 files in real time, so that high-quality MP3 music can be played.

Supplement: The maximum bit rate is 320K, and the high frequency part is one-size-fits-all, which is its shortcoming. The sound quality is not high!

2. WMA format

The full name of WMA is Windows Media Audio, which is an audio format strongly promoted by Microsoft. The WMA format achieves a higher compression rate by reducing data traffic but maintaining sound quality. Its compression rate can generally reach 1:18, and the generated file size is only half of the corresponding MP3 file. This is very important for models that are only equipped with 32M. It supports WMA and RA formats, which means that the 32M space has been expanded by two times. In addition, WMA can also prevent copying through DRM (Digital Rights Management) solutions, or add restrictions on playback time and playback times, or even restrictions on playback machines, which can effectively prevent piracy.

Supplement: 128kbps is the optimal compression ratio of wma, 128kbps wma=192kbps mp3

3. WAV format

WAV format is a sound developed by Microsoft The file format, also called a waveform sound file, is the earliest digital audio format and is widely supported by the Windows platform and its applications. The WAV format supports many compression algorithms, multiple audio bits, sampling frequencies and channels. It uses a sampling frequency of 44.1kHz and 16 quantization bits. Therefore, the sound quality of WAV is almost the same as that of CD, but the WAV format requires too much storage space. It is very inconvenient to communicate and disseminate.

Supplement: Lossless format, disadvantage: very large size!

4. ASF format

The full name of ASF is Advanced Streaming Format. It is a media playback format developed by Microsoft and is suitable for playback on the network. Windows Media On-Demand Producer is a free software for creating ASF files, allowing even beginners to easily create ASF files using ready-made WAV or AVI files.

Supplement: Rare formats

5. AAC format

AAC is actually the abbreviation of Advanced Audio Coding. AAC is an audio format jointly developed by Fraunhofer IIS-A, Dolby and AT&T. It is part of the MPEG-2 specification. The algorithm used by AAC is different from that of MP3. AAC improves encoding efficiency by combining other functions. AAC's audio algorithm far exceeds some previous compression algorithms (such as MP3, etc.) in terms of compression capabilities. It also supports up to 48 audio tracks, 15 low-frequency audio tracks, more sampling rates and bit rates, multiple language compatibility, and higher decoding efficiency. In short, AAC can provide better sound quality while reducing the size of MP3 files by 30%.

Supplement: One of the best lossy formats available. There are many encodings, faac and nero are common, with the highest bit rate 448kbps. In terms of hardware support, advanced MP3 and modern mobile phones are generally supported.

6. Mp3Pro format

Mp3Pro is an upgraded version of the Mp3 encoding format. MP3Pro was developed by the Swedish Coding Technology Company. It can also compress the file size of sound files to half the size of the original MP3 format while maintaining the same sound quality. And it can improve the original MP3 music sound quality without basically changing the file size. It can compress audio files with a lower bit rate to the maximum extent...>>

Question 3: What are the common audio files? (1) CMF (Creative Musical Format): Creative company's dedicated music format, similar to MIDI, except for some unique timbres and effects. It is specially used for FM sound cards, but its compatibility is also very poor. (2) CDA (CD Audio): The format used by records, also called the "Red Book" format, records a waveform stream, which is absolutely pure and HIFI. But the disadvantage is that it cannot be edited and the file length is too large. (3) MID/RMI (MIDI): MIDI is an international standard for digital musical instrument interface. It defines the communication interface between electronic music equipment and computers, and specifies the use of digital encoding to describe music scores. The computer synthesizes music based on the commands to the MIDI device stored in the MIDI file, that is, the frequency, volume, channel number and other instruction information of each note. The advantage of MID files is that they are short; the disadvantage is that the playback effect varies depending on software and hardware. (4) WAV (Wave form Audio File): It is the standard format for storing digital sound in Windows itself. Due to the influence of Microsoft, it has now become a universal digital sound file format. Since the WAV format stores uncompressed audio data, it is larger in size. (5) MP3/MP1/MP2 (MPEG Audio Layer-3): MP3 compression format file. Because of its high degree of compression and good sound quality, MP3 is currently the most popular music file. (6) VQF (Transform-domainWeightedInterleave VectorQuantization, TwinVQ): It is an audio compression format developed by Yamaha, targeting MP3. The main selling point is that the compression ratio is higher than MP3, and the sound quality is better than MP3. Since VQF is a proprietary format of Yamaha, its support (players) is quite limited, so its influence is not as good as MP3. (7) RA/RAM (Real Audio): A file format developed by RealNetworks that is mainly suitable for real-time digital audio streaming technology on the network. Since it is aimed at real-time online dissemination, it is far inferior to MP3 in terms of high fidelity, but it is unmatched in terms of network transmission that only requires low fidelity. (8) ASF/ASX/WMA/WAX: ASF and WMA are both new generation online streaming digital audio compression technologies developed by Microsoft for Real. The characteristic of this compression technology is that it takes into account both fidelity and network transmission requirements, so it has a certain degree of advancement. Also due to Microsoft's influence, this audio format is now gaining more and more support. (9) XM/S3M/STM/MOD/MTM: These file formats are actually different from each other, but they all belong to Module, referred to as Mod. This music format was once popular on the Internet, and it did not fade until the rise of MP3, but it still has a certain influence.

Question 4: What are the common audio file formats 1. AU format. Audio format developed for UNIX systems. 2. AIFF format. Audio format developed by Apple. 3. VQF format (Doomsday Yellow Flower). Audio format developed by Yamaha Corporation. 4. CD format (sounds of nature). The best sounding audio format in the world today. 5. APE format (lossless compression). APE is one of the currently popular digital music file formats. 6. MP3 format (popular trend). Born in Germany in the 1980s, the file size is small. 7. RealAudio format (flowing melody). Mainly suitable for online music appreciation on the Internet. 8. WMA format (the most powerful enemy). Microsoft's high compression rate audio format suitable for online playback on the Internet. 9. MIDI format (composers’ favorite). A MIDI file is a recorded file that records sound information. 10. WAV format (lossless music). A widely popular sound file format on PCs developed by Microsoft.

Question 5: What are the commonly used video formats? 1. AVI, the English abbreviation of Audio Video Interleaved. AVI, a video format published by Microsoft, can be said to be one of the oldest formats in the video field.

The AVI format is easy to call, has good image quality, and has a wide choice of compression standards. It is the most widely used format.

2. Friends who have used Mac machines for MOV should have had some contact with QuickTime. QuickTime was originally an image and video processing software used by Apple for Mac computers. Quick-Time provides two standard image and digital video formats, which can support static *.PIC and *.JPG image formats, dynamic *.MOV based on Indeo compression method and *.MPG video format based on MPEG compression method .

3. ASF (Advanced Streaming format). ASF is a file compression format developed by MICROSOFT to compete with the current Real player that can directly watch video programs online. ASF uses the MPEG4 compression algorithm, and the compression rate and image quality are very good. Because ASF exists in a video "streaming" format that can be watched instantly on the Internet, it is not surprising that its image quality is a little worse than VCD, but better than the RAM format, which is also a video "streaming" format.

4. WMV is a technical standard for real-time dissemination of multimedia on the Internet that is independent of encoding methods. Microsoft hopes to use it to replace technical standards such as QuickTime and file extensions such as WAV and AVI. The main advantages of WMV are: scalable media types, local or network playback, scalable media types, stream prioritization, multi-language support, scalability, etc.

5. NAVI

If you find that the original playback software suddenly cannot open AVI files in this format, then you have to consider whether you have encountered n AVI. n AVI is the abbreviation of New AVI, which is a new video format developed by an underground organization called Shadow Realm. It is modified from the Microsoft ASF compression algorithm (not the imagined AVI). The video format pursues nothing more than compression rate and image quality, so in order to pursue this goal, NAVI has improved some shortcomings of the original ASF format. Allow NAVI to have a higher frame rate. It can be said that NAVI is an improved ASF format that removes the video streaming characteristics.

6. 3GP

3GP is a video encoding format for 3G streaming media. It was mainly developed to cooperate with the high transmission speed of 3G network. It is also the most common one in mobile phones at present. A video format.

Simply put, this format is a multimedia standard developed by the "3rd Generation Partnership Project" (3GPP), which enables users to enjoy high-quality video, audio and other multimedia content using mobile phones. Its core consists of advanced audio coding (AAC), adaptive multi-rate (AMR) and MPEG-4 and H.263 video codecs. Currently, most mobile phones that support video shooting support video playback in 3GPP format.

7. REAL VIDEO

The REAL VIDEO (RA, RAM) format has been positioned in video streaming applications from the beginning. It can also be said to be the founder of video streaming technology. . It can achieve uninterrupted video playback under the condition of using 56K MODEM dial-up Internet access. Of course, its image quality cannot be compared with MPEG2 and DIVX. After all, it requires a lot of bandwidth to transmit uninterrupted video on the Internet, and it is a strong competitor of ASF in this regard.

8. MKV

A video file with the suffix MKV appears frequently on the Internet. It can integrate multiple different types of audio tracks and subtitle tracks in one file, and Its video encoding also has a great degree of freedom, it can be common DivX, XviD, 3IVX, or even streaming videos such as RealVideo, QuickTime, and WMV. In fact, it is a new multimedia packaging format called Matroska. This advanced and open packaging format has given me... >>

Question 6: Common song files What are the formats? CD format: Sound of Nature

What is the audio format with the best sound quality in the world today? Of course it's a CD. Therefore, when it comes to audio formats, CD is naturally the pioneer. In the "Open File Type" of most playback software, you can see the *.cda format, which is the CD audio track. The standard CD format is a sampling frequency of 44.1K, a rate of 88K/second, and 16 quantization bits. Because the CD track can be said to be approximately lossless, its sound is basically faithful to the original sound, so if you are a If you are an audiophile, CD is your first choice. It will make you feel the sound of nature. CDs can be played in CD players or replayed using various playback software on computers.

A CD audio file is a *.cda file. This is just index information and does not actually contain sound information. Therefore, regardless of the length of the CD music, the "*.cda file" seen on the computer is 44 bytes long. . Note: You cannot directly copy *.cda files in CD format to the hard disk for playback. You need to use audio track capture software such as EAC to convert the CD format files into WAV. This conversion process will only occur if the quality of the CD drive is acceptable and the parameters of EAC are set. If done properly, it can be said to be basically lossless audio capture. It is recommended that everyone use this method.

WAV: lossless music

It is a sound file format developed by Microsoft. It complies with the PIFFResource Interchange FileFormat file specification and is used to save audio information resources of the WINDOWS platform. It is used by WINDOWS supported by the platform and its applications. The "*.WAV" format supports multiple compression algorithms such as MSADPCM and CCITTALAW, and supports a variety of audio bits, sampling frequencies and channels. The standard format WAV file is the same as the CD format, with a sampling frequency of 44.1K and a rate of 88K/sec. , 16 quantization bits. As you can see, the sound file quality of WAV format is almost the same as that of CD. It is also a widely popular sound file format on PCs. Almost all audio editing software "knows" WAV format.

By the way, here is the AIFF (Audio InterchangeFileFormat) format developed by Apple and the AU format developed for UNIX systems. They are very similar to WAV and are also supported by most audio editing software. These are some common music formats.

MP3: a popular trend

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. According to the difference in compression quality and encoding processing, it is divided into 3 layers, corresponding to the three types of sound files: "*.mp1/"*.mp2"/"*.mp3". What needs to be reminded is: the compression of MPEG audio files It is a kind of lossy compression. MPEG3 audio encoding has a high compression rate of 10:1~12:1, while basically keeping the low audio part without distortion, but sacrificing the quality of the high audio part from 12KHz to 16KHz in the sound file in exchange for the file. The size and length of music files stored in *.mp3 format are generally only 1/10 of *.wav files, and the sound quality is inferior to CD format or WAV format sound files due to their small file size and good sound quality. ; So when it came out, there was no other audio format that could compete with it, thus providing good conditions for the development of the *.mp3 format. Until now, this format is still very popular, and its status as a mainstream audio format is difficult to achieve. Shaken. However, the copyright problem of MP3 music has never been solved, because MP3 does not have copyright protection technology. To put it bluntly, anyone can use the MP3 format to compress the sampling frequency of music. There are many options, you can use a sampling frequency of 64Kbps or lower to save space, or you can use a 320Kbps standard to achieve extremely high sound quality. We use the MP3 encoder equipped with Fraunhofer II SMpeg Lyaer3 (the best encoder now) MusicMatchJukebox6.0. Encoding a 3-minute song at 128Kbps results in a 2.82MB MP3 file. Using the default CBR (fixed sampling frequency) technology, a song can be sampled at a fixed frequency, while VBR (can... .>>

Question 7: Which music formats have the best sound quality? 1. MP3 format

The full name of MP3 is Moving Picture Experts Group Audio Layer III. MP3 is an audio compression technology. Since the full name of this compression method is MPEG Audio Layer3, people call it MP3 for short. MP3 uses MPEG Audio Layer 3 technology to compress music at 1:10 or even 1:12. rate, compressing it into a file with a smaller capacity. In other words, the file can be compressed to a smaller extent with little loss of sound quality, and the original sound quality is very well maintained. The high sound quality makes the MP3 format almost synonymous with online music. The MP3 format of music per minute is only about 1MB, so the size of each song is only 3-4 megabytes. Use an MP3 player to decode MP3 files in real time. Compression (decoding), so that high-quality MP3 music is played.

Supplement: The maximum bit rate is 320K, and the high frequency part is one-size-fits-all, which is its shortcoming.

The sound quality is not high!

2. WMA format

Supplement: 128kbps is the optimal compression ratio of wma, 128kbps wma=192kbps mp3

3. WAV format

Supplement: Lossless format, disadvantage: very large size!

4. ASF format

Supplement: Rare formats

5. AAC format

6. Mp3Pro format

Question 8: What are the common audio file formats: mp3, WMA

Question 9: Common What are the sound file formats? (List four types) There are 7 common sound file formats: WAVE, with the extension WAV: This format records the waveform of sound, so as long as the sampling rate is high, the sampling bytes are long, and the machine speed is fast, use The sound files recorded in this format can be basically the same as the original sound, and the quality is very high, but the price of this is that the files are too large. MOD, extension MOD, ST3, But it also has some fatal weaknesses, so it has been gradually eliminated and is currently only used by MOD fans and some game programs. MPEG-3, extension MP3: The most popular sound file format now. Because of its high compression rate, it is widely used in network video phone communications. However, compared with CD records, the sound quality is not satisfactory. Real Audio, extension RA: This format is really the soul of the Internet. Its powerful compression and minimal distortion make it stand out among many formats. Like MP3, it is also designed to solve the problem of network transmission bandwidth resources, so its main advantages are compression ratio and fault tolerance, followed by sound quality.

Creative Musical Format, extension CMF: Creative company's dedicated music format, similar to MIDI, except for some unique timbres and effects. It is specially used for FM sound cards, but its tolerance is also very poor. CD Audio, extension CDA: The format used by records, also known as the "white paper" format, records a waveform stream, which is absolutely pure and HIFI. The disadvantage is that it cannot be edited and the file length is too large. MIDI, extension MID; currently the most mature music format, has actually become an industry standard. Its scientific nature, compatibility, complexity and other aspects certainly far exceed all the standards introduced earlier in this article. Its General MIDI is The most common prevailing standards. As the data communication standard of the music industry, MIDI can command the operation of various music equipment, and has a unified standard format, which can imitate various performance techniques of the original musical instruments and even surpass all performance effects, and the file length is very small.

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