compression ratio TOYOTA COROLLA 2018 Owners Manual (in English)

3025-6. Using an external device
COROLLA_TMMMS_TMMC_U (01999-02509)
■USB memory functions
●Depending on the USB memory device that is connected to the system, the
device itself may not be operable and certain functions may not be avail-
able. If the device is inoperable or a function is unavailable due to a mal-
function (as opposed to a system specification), disconnecting the device
and reconnecting it may resolve the problem.
● If the USB memory device still does not begin operation after being discon-
nected and reconnected, format the memory.
■ Error messages for USB memory
■ USB memory
●Compatible devices
USB memory device that can be used for MP3, WMA and AAC playback.
● Compatible device formats
The following device format can be used:
• USB communication format: USB2.0 HS (Mbps) and FS (12 Mbps)
• File system format: FAT16/32 (Windows)
• Correspondence class: Mass storage class
MP3, WMA and AAC files written to a device with any format other than
those listed above may not play correctly, and their file names and folder
names may not be displayed correctly.
Items related to standards and limitations are as follows:
• Maximum directory hierarchy: 8 levels
• Maximum number of folders in a device: 3000 (including the root)
• Maximum number of files in a device: 9999
• Maximum number of files per folder: 255
● MP3, WMA and AAC files
MP3 (MPEG Audio LAYER 3) is a standard audio compression format.
Files can be compressed to approximately 1/10 of their original size usi\
ng
MP3 compression.
WMA (Windows Media Audio) is a Microsoft audio compression format. This
format compresses audio data to a size smaller than that of the MP3 format.
AAC is short for Advanced Audio Coding and refers to an audio compression
technology standard used with MPEG2 and MPEG4.
MP3, WMA and AAC file and media/fo rmats compatibility are limited.
MessageCause/Correction procedures
“Connection error. Please
consult your Owner’s Man-
ual for instructions on how
to connect the USB device.”
This indicates a problem with the USB mem-
ory device or its connection.
“No music files found.”This indicates that no MP3/WMA/AAC files
are included on the USB memory device.