This manual has a really good introduction to/explanation of compression.
Y'all should totally read it.
http://www.bss.co.uk/includes/download.aspx?filename=../attachments/pdf/user_manuals/dpr402um.pdf
Y'all should totally read it.
http://www.bss.co.uk/includes/download.aspx?filename=../attachments/pdf/user_manuals/dpr402um.pdf