Lexus RX 450h 2014 Owner's Manual page 406

USB memory
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Compatible devices
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USB memory that can be used for MP3 and WMA playback.
Compatible device formats
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The following device formats can be used:
• USB communication formats: USB2.0 HS (480Mbps)
• File formats: FAT16/32 (Windows)
• Correspondence class: Mass storage class
MP3 and WMA files written in 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 and WMA files
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MP3 (MPEG Audio LAYER 3) is a standard audio compression format.
Files can be compressed to approximately 1/10 of their original size using 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.
There is a limit to the MP3 and WMA file standards that can be used and to the
media/formats on which the files are recorded.
MP3 file compatibility
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• Compatible standards
MP3 (MPEG1 AUDIO LAYERII, III, MPEG2 AUDIO LAYERII, III,
MPEG2.5)
• Compatible sampling frequencies
MPEG1 AUDIO LAYERII, III: 32, 44.1, 48 (kHz)
MPEG2 AUDIO LAYERII, III: 16, 22.05, 24 (kHz)
• Compatible bit rates (compatible with VBR)
MPEG1 AUDIO LAYERII, III: 32-320 (kbps)
MPEG2 AUDIO LAYERII, III: 8-160 (kbps)
• Compatible channel modes: stereo, joint stereo, dual channel and monaural
3-3. Using the Lexus Display Audio system
3
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