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MP31WMAIAAC
What is AAC?
CDIMP31WMAIAAC Operations
What is MP3?
MP3 is an audio compression method and
classified into audio layer 3 of MPEG standards.
This audio compression method has penetrated
into PC users and become a standard format.
This MP3 features the original audio data
compression to about 10 percent of its initial
size with a high sound quality. This means that
about 10 music CDs can be recorded on a CD-R
disc or CD-RW disc to allow a long listening time
without having to change CDs.
What is
WMA?
WMA
is
the abbreviation of Windows Media
Audio, an audio file format developed by
Microsoft Corporation.
Notes:
• If you
playa
file with DRM (Digital Rights
Management) for
WMA
remaining
ON,
no audio
is output (The
WMA
indicator blinks).
• Windows Media
TM,
and
the Windows ® logo are
trademarks, or registered trademarks
of
Microsoft Corporation
in
the United States and/or
other countries.
•
To
disable
DRM
(Digital
Rights
Management)
1.
When using Windows Media Player 9/10/11,
click on TOOL
~
OPTIONS
~
MUSIC .
RECORD tab, then under Recording
settings, unclick the Check box for RECORD
PROTECTED MUSIC. Then, reconstruct
files.
Personally constructed WMA files are used
at your own responsibility.
18 DXZ385USB
• AAC is an acronym for uAdvanced Audio
Coding" and refers to the audio compression
method used with video compression
standards MPEG-2 and MPEG-4.
• AAC files composed with the following
conditions can be played:
- AAC files encoded with iTunes.
- iTunes Ver. 7.0 or earlier.
- File extension
U.
m
4a" (u.M4A")
• Tracks purchased at an iTunes Music store,
and copyright-protected files cannot be
played.
• When playing AAC files that include image
data, additional time may be required before
playback begins.
• Files may not play properly, depending on the
iTunes version under which an AAC file is
encoded.
Precautions when creating
MP31
WMAIAAC file
•
Usable
sampling
rates
and
bit
rates
1.
MP3: Sampling rate 8 kHz-48 kHz,
Bit rate 8 kbps-320 kbps / VBR
2.
WMA: Bit rate 8 kbps-320 kbps
3.
AAC: Sampling rate 8 kHz-48 kHz,
Bit rate 8 kbps-320 kbps / VBR
• File
extensions
1. Always add a file extension u.MP3", u.WMA"
or ".M4A" to MP3,
WMA
or AAC file by using
single byte letters. If you add a file extension
other than specified or forget to add the file
extension, the file cannot be played.
2.
Files without MP3IWMAlAAC data will not
play. The indication
UNO
FILE" appears
in
the play time display if you attempt to play
files without MP3IWMAlAAC data.
* When
VBR
files are played, the play time display
may differ the play location.
* When MP3IWMAlAAC files
are
played, a little no
sound part
is
caused between tunes.