When working with sound files, there are two completely different types of compression. One type decreases the size of the sound file and the other reduces the dynamic range of a signal.
Unless you're a professional sound master, the type of compression you'll most likely be concerned with is the type that reduces file size. While reducing the dynamic range of a signal improves the quality of your sound, it isn't a fundamental part of editing sound files for the Web. However, it is important to be aware that two types of compression exist, and to know the difference between the two.
Reducing File Size
Decreasing the size of a sound file is one of the most important functions you can perform when working with audio on the Web. Uncompressed sound files do the same thing as large graphic images dothey take up a lot of bandwidth. Without compression, an audio file could take hours to download. Chances are, your readers won't stick around that long to listen to sound clips of you reading your poetryor any sound clip, for that matter.
You can use an audio editor to compress your sound files, but not as well as a program specifically designed for compressing sound files will.