4-42Heater, air conditioner, audio and phone systems
tion.
. An incorrect song title may appear
when the Play Mode is changed while
using an iPod nano® (2nd Generation)
. Audiobooks may not play in the same
order as they appear on an iPod®.
. Large video files cause slow responses
in an iPod®. The display may momen-
tarily black out, but will soon recover.
. If an iPod® automatically selects large
video files while in the shuffle mode,
the display may momentarily black
out, but will soon recover.
Compressed Audio Files (MP3/
WMA)
Explanation of terms:
.MP3 — MP3 is short for Moving Pic-
tures Experts Group Audio Layer 3.
MP3 is the most well known com-
pressed digital audio file format. This
format allows for near “CD quality”
sound, but at a fraction of the size of
normal audio files. MP3 conversion of
an audio track can reduce the file size
by approximately a 10:1 ratio (Sam-
pling: 44.1 kHz, Bit rate: 128 kbps) with
virtually no perceptible loss in quality.
The compression reduces certain
parts of sound that seem inaudible
to most people. .
WMA — Windows Media Audio (WMA) is
a compressed audio format created
by Microsoft as an alternative to MP3.
The WMA codec offers greater file
compression than the MP3 codec,
enabling storage of more digital audio
tracks in the same amount of space
when compared to MP3s at the same
level of quality.
This product is protected by certain
intellectual property rights of Micro-
soft Corporation and third parties. Use
or distribution of such technology
outside of this product is prohibited
without a license from Microsoft or an
authorized Microsoft subsidiary and
third parties.
. Bit rate — Bit rate denotes the number
of bits per second used by a digital
music file. The size and quality of a
compressed digital audio file is deter-
mined by the bit rate used when
encoding the file.
. Sampling frequency — Sampling fre-
quency is the rate at which the
samples of a signal are converted
from analog to digital (A/D conver-
sion) per second.
. Multisession — Multisession is one of
the methods for writing data to med-
ia. Writing data once to the media is
called a single session, and writing more than once is called a multises-
sion.
. ID3/WMA Tag — The ID3/WMA tag is
the part of the encoded MP3 or WMA
file that contains information about
the digital music file such as song title,
artist, album title, encoding bit rate,
track time duration, etc. ID3 tag in-
formation is displayed on the Album/
Artist/Track title line on the display.
* Windows® and Windows Media® are
registered trademarks or trademarks of
Microsoft Corporation in the United
States of America and/or other countries.
