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最近在国外开始普及的一种数字技术正震撼着音乐界,这就是可用个人电脑通过因特网来收听高音质乐曲的“MP3”技术。利用网络来销售音乐是一种新的音乐流通形态与市场机会。 “MP3”技术是一种音频压缩方法。它指的是MPEG-1音频编码的第3层次Layer Ⅲ。在MPEG-1标准中,规定了3个层次,即Layr Ⅰ、Layer Ⅱ及Lay-er Ⅲ。根据用途的不同,可以使用编码系统的不同层次。层次越高,编码器越复杂,性能也越好。因此,一个MP3的解码器可以解码全部三个层次的编码比特流数据。但是,以往似乎还没有使用MP3的用途。 音乐或其它形式的音频内容(如新闻、教材等)经数字化处理后均能以MP3音频压缩方式加以编码,再
A digital technology that has recently become popular abroad is rocking the music industry, the “MP3” technology that allows personal computers to listen to high quality music through the Internet. Using the Internet to sell music is a new form of music distribution and market opportunities. “MP3” technology is an audio compression method. It refers to Layer 3 of MPEG-1 audio encoding. In the MPEG-1 standard, three levels are defined, namely Layr I, Layer II and Lay-er III. Depending on the application, different levels of coding system can be used. The higher the level, the more complex the encoder and the better the performance. Therefore, an MP3 decoder can decode all three levels of encoded bit stream data. However, there seems to be no use of MP3 in the past. Music or other forms of audio content (such as news, textbooks, etc.) can be digitally processed to MP3 audio compression encoding, and then