Click MENU on the Compress button to display a list of compression techniques. The choices are:
None--no compression. This choice provides the best audio quality, loads and saves files the fastest, but consumes the most disk space.
4-bit G.721 ADPCM--2:1 compression. This is a good choice for voice files and adequate for music. It uses 50% less disk space than no compression.
3-bit G.723 ADPCM--8:3 compression. This is an adequate choice for voice files, but may be unacceptable for some music. It uses 62.5% less space than no compression.
If the size of a file is a concern, choose compression. If loading time is a concern, choose no compression. A compressed file uses less disk space but requires additional loading time because it must be decompressed before it is used. Also, if you choose to compress a file, the audio encoding specified by New Format... is ignored. When you load a compressed file, the format may change from its previous choice (e.g., if you compress an A-law file and reload, the file format changes to m-law).