【摘 要】
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MP3的全名是MPEG AudioLayer-3,简单的说就是一种声音文件的压缩格式。MP3压缩音乐的方式是通过一个运算法则,去掉声音中高频与低频的部分,将声音用1:10甚至1:12的压缩率压
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MP3的全名是MPEG AudioLayer-3,简单的说就是一种声音文件的压缩格式。MP3压缩音乐的方式是通过一个运算法则,去掉声音中高频与低频的部分,将声音用1:10甚至1:12的压缩率压缩,采样率为44kHz、比特率为112kbit/s。歌曲变成MP3之后,音质听起来与CD相差不大。MP3的好处在于大幅降低数字声音文件的容量,而不会破坏原来的音质。MP3音乐以其容量小,音质较好在CAI课件中得到了广泛的应用。本文主要介绍将CD唱片、VCD伴音、磁带信号等制作成MP3文件的方法。
MP3’s full name is MPEG AudioLayer-3, a simple way to say it is a sound file compression format. MP3 compresses music by using an algorithm that removes the high and low frequencies of the sound, compresses the sound with a compression ratio of 1:10 or even 1:12, with a sample rate of 44kHz and a bit rate of 112kbit / s. After the song into MP3, the sound quality sounds almost the same with the CD. The beauty of MP3 is that it drastically reduces the capacity of digital sound files without breaking the original sound quality. MP3 music with its small capacity, better sound quality in CAI courseware has been widely used. This article describes the CD record, VCD sound, tape signals, etc. into MP3 files.
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