MP3, WMA and AAC files
•MP3 is short for MPEG Audio Layer 3 and refers to an audio compression technology standard.
•WMA is short for Windows MediaTM Audio and refers to an audio compression tech- nology that is developed by Microsoft Corporation. WMA data can be encoded by using Windows Media Player version 7 or later.
•AAC is short for Advanced Audio Coding and refers to an audio compression tech- nology standard.
•With some applications used to encode WMA files, this unit may not operate cor- rectly.
•With some applications used to encode WMA files, album names and other text information may not be correctly dis- played.
•This unit allows playback of MP3/WMA/AAC files on
•MP3/WMA/AAC files are not compatible with packet write data transfer.
•The maximum number of characters which can be displayed for a file name, including the extension (.mp3, .wma, .m4a), is 64 , from the first character.
•The maximum number of characters which can be displayed for a folder name is 64 .
•In case of files recorded according to the Romeo file system, only the first 64 char- acters can be displayed.
•The folder selection sequence for playback and other operations becomes the writing sequence used by the writing software. For this reason, the expected sequence at the time of playback may not coincide with the actual playback sequence. However, there also is some writing software which permits setting of the playback order.
IMPORTANT
•When naming an MP3/ WMA/AAC file, add the cor- responding filename exten- sion (.mp3, .wma, .m4a).
•This unit plays back files with the filename extension (.mp3, .wma, .m4a) as an MP3/WMA/AAC file. To pre- vent noise and malfunc- tions, do not use these extensions for files other than MP3/WMA/AAC files.
MP3 additional infor- mation
•Files are compatible with the ID3 Tag Ver. 1.0, 1.1, 2.2, 2.3 and 2.4 formats for dis- play of album (disc title), track (track title), artist (track artist) and comments. Ver. 2.x of ID3 Tag is given priority when both Ver. 1.x and Ver. 2.x exist.
•The emphasis function is valid only when MP3 files of 32, 44.1 and 48 kHz frequen- cies are played back. (16, 22.05, 24, 32, 44.1, 48 kHz sampling frequencies can be played back.)
•There is no m3u play list compatibility.
•There is no compatibility with the MP3i (MP3 interactive) or mp3 PRO formats.
•The sound quality of MP3 files generally becomes better with an increased bit rates. This unit can play recordings with bit rates from 32 kbps to 320 kbps, but in order to be able to enjoy sound of a certain quality, we recommend using only discs recorded with a bit rate of at least 128 kbps.
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