Panasonic CQC5305U CQC5305U User Guide - Page 11

MP3/WMA/AAC Player Notes on MP3/WMA/AAC What is MP3/WMA/AAC? MP3* (MPEG Audio Layer-3) and WMA (Windows MediaTM Audio) are the compression formats of digital audio. The former is developed by MPEG (Motion Picture Experts Group), and the latter is developed by Microsoft Corporation. Using these compression formats, you can record the contents of about 10 music CDs on a single CD media (This figures refer to data recorded on a 650 MB CD-R or CD-RW at a fixed bit rate of 128 kbps and a sampling frequency of 44.1 kHz). *MPEG Layer-3 audio coding technology licensed from Fraunhofer IIS and Thomson. AAC is an abbreviation for "Advanced Audio Coding". It has been defined as a standard for audio compression technology using MPEG 2 and MPEG 4. Note: MP3/WMA/AAC encoding and writing software is not supplied with this unit. Points to remember when making MP3/WMA/AAC files Common • High bit rate and high sampling frequency are recommended for high quality sounds. • Selecting Variable Bit Rate (VBR) is not recommended because playing time is not displayed properly and sound may be skipped. • Selecting Variable Bit Rate (VBR) is not recommended because Re-master function may have little effect in some cases. • The playback sound quality differs depending on the encoding circumstances. For details, refer to the instructions of your own encoding software and writing software. MP3 • It is recommended to set the bit rate to "128 kbps or more" and "fixed". WMA • It is recommended to set the bit rate to "64 kbps or more" and "fixed". • Do not set the copy protect attribute on the WMA file to enable this unit to play back. AAC • It is recommended to set the bit rate to "128 kbps or more" and "fixed". • The formats and extensions for AAC data vary according to the encoder software used. • AAC files which can be played on this unit have the ".m4a" extension and were encoded with Apple iTunes® version 6. • The file extension for files encoded with the iTunes Apple Lossless Encoder is ".m4a", but such files cannot be played on this player. • Files under copyright protection cannot be played. Display Information Displayed items • CD-TEXT • MP3 (ID3 tag) Disc title Album name Track title Title name/artist name • MP3/WMA/AAC • WMA (WMA tag) Folder name Album name File name Title name/artist name • AAC (Song information) Album name Title name/artist name Displayable characters • Displayable length of file name/folder name: within 32 characters. (Unicoded file and folder names are reduced by half in the number of displayable characters.) • Name files and folders in accordance with the standard of each file system. Refer to the instructions of writing software for details. • ASCII character set and special characters in each language can be displayed. • Some Cyrillic characters in the Unicode can be displayed. ASCII character set A to Z, a to z, digits 0 to 9, and the following symbols: (space Special Characters Notes: • With some software in which MP3/WMA/AAC format files have been encoded, the character information may not be displayed properly. • Undisplayable characters and symbols will be converted into an asterisk ( ). • It is recommended that the length of the file name is less than 8 (excluding the file extension). iTunes is a trademark of Apple Computer, Inc., registered in the U.S. and other countries/regions. Windows Media, and the Windows logo are trademarks, or registered trademarks of Microsoft Corporation in the United States and/or other countries/regions. Caution Never assign the ".mp3", ".wma" or ".m4a" file name extension to a file that is not in the MP3/WMA/AAC format. This may not only produce noise from the speaker damage, but also damage your hearing. 20 CQ-C5405U/C5305U Notes on MP3/WMA/AAC (continued) Recording MP3/WMA/AAC files on a CD-media • You are recommended to minimize the chances of making a disc that contains both CD-DA files and MP3/WMA/AAC files. • If CD-DA files are on the same disc as MP3, WMA or AAC files, the songs may not play in the intended order, or some songs may not play at all. • When storing MP3 data, WMA data and AAC data on the same disc, use different folders for each data. • Do not record files other than MP3/WMA/AAC files and unnecessary folder on a disc. • The name of an MP3/WMA/AAC file should be added by rules as shown in the following descriptions and also comply with the rules of each file system. • The file extension ".mp3", ".wma" or ".m4a" should be assigned to each file depending on the file format. • You may encounter trouble in playing MP3/WMA/AAC files or displaying the information of MP3/WMA/AAC files recorded with certain writing software or CD recorders. • This unit does not have a play list function. • Although Multi-session recording is supported, the use of Disc-at-Once is recommended. Supported file systems ISO 9660 Level 1/Level 2, Apple Extension to ISO 9660, Joliet, Romeo Note: Apple HFS, UDF 1.50, Mix CD and CD Extra are not supported. Compression formats (Recommendation: "Points to remember when making MP3/WMA/AAC files" on the previous page) Compression method MPEG 1 audio layer 3 (MP3) MPEG 2 audio layer 3 (MP3) MPEG 2.5 audio layer 3 (MP3) Windows Media Audio Ver. 2, 8, 9* MPEG 4 Advanced Audio Coding Low Complexity (AAC LC) Bit rate 32 k - 320 kbps 8 k - 160 kbps 8 k - 160 kbps 32 k - 192 kbps 24 k - 320 kbps VBR Sampling frequency Yes 32, 44.1, 48 kHz Yes 16, 22.05, 24 kHz Yes 8, 11.205, 12 kHz Yes 32, 44.1, 48 kHz Yes 11.025, 12, 16, 22.05, 24, 32, 44.1, 48 kHz * WMA 9 Professional/LossLess/Voice are not supported. Folder selection order/file playback order Maximum number of files/folders • Maximum number of files: 511 (files + folders) 1 • Maximum number of files in one folder: 255 • Maximum depth of trees: 8 • Maximum number of folders: 255 (Root folder is included.) Root folder (Root Directory) 2 4 3 Folder Selection In the order 1 8 File Selection In the order Notes: 5 • You can shorten the duration between data read and playback by decreasing the quantity of files or folders, 6 or the depth of the hierarchy. • This unit counts the number of folders irrespective of 8 the presence or absence of an MP3/WMA/AAC file. • If the selected folder does not contain any MP3/WMA/ 7 AAC files, the nearest MP3/WMA/AAC files in the order of playback will be played. Tree 1 Tree 2 Tree 3 Tree 4 Tree 8 (Max.) • Playback order may be different from other MP3/ WMA/AAC players even if the same disc is used. • "ROOT" appears when displaying the root folder name. Copyright It is prohibited by copyright laws to copy, distribute and deliver copyrighted materials such as music without the approval of copyright holder except enjoying yourself personally. No warranty Above description complies with our investigations as of September 2006. It has no warranty for reproducibility and displayability of MP3/WMA/AAC. CQ-C5405U/C5305U 21 MP3/WMA/AAC Player English