Usually, whenever we mention downloading music, the first reaction is MP3. In fact, MP3 has gradually become synonymous with audio format, and it is not far from extinction. Now almost all online audio audition websites use WMA format (usually the bit rate is 64 Kbps). WMA decoding is more complicated than MP3, so many cottage phones and well-known low-end brand phones do not support WMA audio format. At the data rate of 64Kbps, most information can be retained in the frequency range of 13000-20000Hz, but WMA's performance at the low frequency of 64kbps is a bit disappointing, which sounds hard, just like adding wow effect, and it feels very bad. Of course, it feels more concentrated than 64k mp3 with the same number. Auditively, the performance of 64WMA is basically close to the sound quality level of 128kbps mp3, but it does not reach it. Wma of 96K is slightly better than mp3 of 128K, and WMA is almost the same at various bit rates higher than 128, with rich high frequency and overtones. Most people can't hear the difference between sound quality and timbre above WMA 128Kbps. Generally speaking, WMA has a hard voice and is suitable for pop rock. If it is classical or pure vocal music, it feels a bit stiff, below. WMA above 128 will feel thinner than MP3. WMA has completely surpassed MP3 format in the audition of code streams below 128kbps, and the king of low code streams is not in name only. However, when the code stream rose to 128kbp, the sound quality of WMA did not improve as much as that of MP3. At present, all portable players support the most commonly used audio formats. WMA (Wireless Messaging API) provides JAVA programs with the function of sending and receiving wireless information. WMA 1. 1 .WMA can be used for encoding files of various formats. Applications can use the Windows Media Format SDK to encode and decode WMA formats. Some common applications supporting WMA include Windows Media Player, Windows Media Encoder, RealPlayer, Winamp, etc. Other platforms, such as software and hardware in Linux and mobile devices, also support this format. WMA 7 supports the advantages of WMA after certificate encryption. Without permission (that is, without a license certificate), even if it is illegally copied to the local area, it is impossible to listen. At the same time, Microsoft's original claim that the same file, the same sound quality, is twice as small as MP3 has also been fulfilled. In fact, this statement only applies to low bit rates. In addition, Microsoft has greatly improved the engine in WMA 9, which is almost smaller than MP3 1/3 under the same file and sound quality, and is very suitable for network streaming media and mobile devices. The disadvantage is that the high bit rate rendering ability is low. Compared with WMA of 192kbps, a 320kbps MP3 with the same sound source can easily distinguish the former in sound quality and rendering power. Like MP3, WMA is a file format that weakens data compression, and WMA is not suitable for demanding users. (Version 9.0 supports lossless compression) In addition, WMA, like MP3, is a patented file format. Supported devices need to purchase copyright. Wma format is the same as avi format and mp4 format. It has sound and images. But mp3 doesn't support avi. Mp4 format only supports wma. The new application of Wma supports a new format: WMA LOSS, a lossless format of CD audio developed by Microsoft, which can make the restored sound exactly the same as that of CD, and the data volume is only about half of that of CD. The general bit rate is between 720 and 890, and the 24-bit 96khz bit rate is above 3MBPS, which inherits the tradition of Microsoft. The latest codec supporting copyright protection is Windows Media Audio10 Professional. Up to 24 bits /96 khz, 5. 1, 7. 1 channel, "unlimited number of channels" 5. 1 surround sound audio is above 384 kbps, which is mostly equal to PCM file frequency interpolation mode [edit this paragraph] WMA Chinese Wushu Professional League WMA Wushu Professional League 1. WMA nouns explain WMA, the full English name is Wushu Masters Association, and the English abbreviation is WMA. Chinese Wushu Professional League. WMA was initiated by CTV Sports Entertainment Co., Ltd. and officially announced on February 30, 2008. WMA is defined as a club registered in the industrial and commercial or civil affairs department, which completes the production organization of Wushu professional league products through contracts. [1] WMA is a cooperative entity spontaneously established through contract. Under the leadership of the government, the stability of the club and the competition system is guaranteed through systems and rules. It is the only national and even global operation cooperation entity voluntarily formed by the clubs engaged in martial arts in the world in the form of contracts. This is the lofty mission of 2. WMA competition wins by technology. The attack and defense technology of serious Wushu is the highest principle of WMA; Wushu, Wushu, Wushu are the principles that all athletes, referees and all people who work for WMA must strictly follow! 3.WMA aims to inherit, inherit and develop the ever-changing fighting skills and techniques of China Wushu; Fully display the profound China Wushu culture; Dedicate the precious Wushu cultural heritage to the whole world. All WMA events are martial arts competitions designed according to different boxing skills and techniques. The highest level competition is to let the global Wushu players show the fighting skills and techniques of China Wushu to the maximum extent in WMA competition. The goal of 4.4. WMA will produce wonderful, intense and ever-changing products of sports events, promote the development of Wushu, and dedicate the cultural treasure of Chinese Wushu to all mankind. At the same time, Wushu should adhere to the people-oriented principle and build a harmonious society. 5.WMA's mission WMA's mission is to lead the inheritance, inheritance and development of martial arts fighting technology and dedicate the martial arts culture of China people to all mankind. 6.WMA's slogan transcends legend. 7. The symbol of 7.WMA is basically composed of martial arts boxing and Tai Chi graphic elements. First, the state of etiquette; Second, meet the challenge; Third, cultivate self-cultivation. On June 13, the draw ceremony for the first group match of China Wushu Professional League (WMA) was held in Beijing, which marked the official launch of China Wushu Professional League. The WMA team competition will kick off in Huangshan on July 26th. The competition will be divided into three stages: round robin, semi-final and final. The lottery ceremony for the first WMA China Wushu Professional League Team Competition will be held in Shangri-La Hotel, Beijing. At that time, the WMA China Wushu Professional League Team Competition joined by Shandong Xingwutang Club, Guangdong Boniu Club, Hebei Yun Fei Club, Shaanxi Red Wolf Club, Qingdao Hu Xiang Club and Guangzhou Xia Yong Club will be announced. The Wushu Professional League with independent events in China will be held in Huangshan, Anhui on July 26th, 2009. 8.WMA Club As of August 2009, * * has six participating clubs, namely: Shandong Xingwutang, Qingdao Hu Xiang Club, Guangdong Boniu Club, Guangzhou Xia Yong Club, Shaanxi Red Wolf Club and Hebei Yun Fei Club. 9. The First WMA Champion On September 5, 2009, the first Chinese Wushu Professional League (WMA) came to an end in Huangshan Gymnasium. The most striking final battle between the first place and the second place was a veritable "tiger-wolf hegemony" and ended in a fiery confrontation. Qingdao Hu Xiang team, which had the highest voice before the game, beat Shaanxi Red Wolves 3-/kloc-0-0 to win the first championship in the league, and Yuan Biao, a star player in the team, is also expected to win the "Best Athlete Award". [Edit this paragraph] WMA coding WMA(Windows Media Audio) Type: Audio manufacturer: Microsoft company required bandwidth: 320 ~112kbps (10 ~12 times compression) Features: when the bit rate is less than 128K, After the bit rate is upgraded, the sound quality will not change much. Advantages: When the code rate is less than 128K, WMA is the best to get the coded tone.