Notes on MP3/WMA/AAC
Playable Audio File
CQ-RX400U CQ-RX200U CQ-RX100U CQ-RX100L MP3/WMA/AAC MP3/WMA MP3/WMA MP3/WMA � The �le extension for �les encoded with the iTunes Apple Lossless Encoder is �.m4a�, but such �les cannot be played on this player. � Files under copyright protection cannot be played.
Notes for AAC playback is only for the model CQ-RX400U.
Caution
Never assign the �.mp3�, �.wma� or �.m4a� �le name extension to a �le that is not in the MP3/ WMA/AAC format. This may not only produce noise from the speaker damage, but also damage your hearing.
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 �gures refer to data recorded on a 650 MB CD-R or CD-RW at a �xed bit rate of 128 kbps and a sampling frequency of 44.1 kHz). *MPEG Layer-3 audio coding technology licensed from Fraunhofer. AAC is an abbreviation for �Advanced Audio Coding�. It has been de�ned 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.
iTunes is a trademark of Apple 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.
Points to Remember When Making MP3/ WMA/AAC Files
Common
� High bit rate and high sampling frequency are recommended for high quality sounds. � Selecting VBR (Variable Bit Rate) is not recommended because playing time is not displayed properly and sound may be skipped. � The playback sound quality differs depending on the encoding circumstances. For details, refer to the instructions of your own encoding software and writing software.
Notes on MP3/WMA/AAC
MP3
� It is recommended to set the bit rate to �128 kbps or more� and ��xed�.
WMA
� It is recommended to set the bit rate to �64 kbps or more� and ��xed�. � Do not set the copy protect attribute on the WMA �le to enable this unit to play back.
AAC
� It is recommended to set the bit rate to �128 kbps or more� and ��xed�. � The formats and extensions for AAC data vary according to the encoder software used. � AAC �les which can be played on this unit have the �.m4a� extension and were encoded with Apple iTunes® version 7.
