compression ratio TOYOTA 4RUNNER 2007 N210 / 4.G Navigation Manual

195 ISO 9660 format—
This is the international standard for the for-
matting of CD−ROM folders and files. For the
ISO 9660 format, there are two levels of regu-
lations.
Level 1:
The file name is in 8.3 format (8 character file
names, with a 3 character file extension. File
names must be composed of one−byte capi-
tal letters and numbers. The “_” symbol may
also be included.)
Level 2:
The file name can have up to 31 characters
(including the separation mark “.” and file ex-
tension). Each folder must contain fewer than
8 hierarchies.m3u—
Playlists created using “WINAMP” software
have a playlist file extension (.m3u).
MP3—
MP3 is an audio compression standard deter-
mined by a working group (MPEG) of the ISO
(International Standard Organization). MP3
compresses audio data to about 1/10 the size
of that on conventional discs.
WMA—
WMA (Windows Media Audio) is an audio
compression format developed by Microsoft.
It compresses files into a size smaller than
that of MP3 files. The decoding formats for
WMA files are Ver. 7, 8, and 9.