compression ratio TOYOTA GT86 2018 Accessories, Audio & Navigation (in English)

5. TIPS FOR OPERATING THE AUDIO SYSTEM


6. TIPS FOR OPERATING THE AUDIO SYSTEM
 MP 3 (MPE G Audio Layer 3), WMA
(W indow s Med ia Audio) and AAC
(A dvance d Aud io Cod ing) are a udio
compression stan dards.
 This syste m can play MP3/WMA/AA C files
on USB memor y.
 When na ming an MP3/WMA/ AAC file, add
an a ppropriate fil e extens ion
(.m p3/.wma /.m 4a).
 Thi s sy stem p lays back file s
with
. mp3 /.wma /.m4a fi le ex tension s as
MP3/WMA/ AAC fi les re spective ly. To
pr event no ise and pla yback errors, use
t he
ap propri ate file ex tension.
 MP 3 file s ar e compat ible wi th the ID3 Tag
Ver. 1.0, Ver. 1.1, Ver. 2.2 and Ver. 2 .3
fo rma ts. This syste m cannot di splay
Al bum title, track title an d artis t n am e in
ot her for mats.
 W MA/AA C
files can co ntain a WMA /AAC
tag t hat is used in the same wa y as an ID3
t ag. WMA /AAC tags carry information
such as track title and artist n ame.
 The e mphas is fun ction is available only
whe n playing MP3 /WM A files record ed at
32, 44.1 and 48 kHz.
 This system can play back AAC files
en coded b y iTunes.
 The sound qu ality of MP3/WM A files
generally i mproves with hi gher bit rates.
In ord er to achieve a reasonab le level o f
sound quality, files create d with a b it ra te
of at l east 128 kbps are rec ommende d. 
MP3 i (MP 3 int eractive) and MP3PRO
form ats a re not compatible with the audio
p la yer.
 Th e pla yer
is compatible w ith VBR
(V ariable Bit Rate).
 When p laying b ack files recorded as VBR
(V ariab le B it Ra te) files, the play t ime will
not be correctly displayed if the fast
fo rwar d or re verse operation s ar e us ed.
 It is not possible to check fo lders that do
not i nclude MP3/WMA /AAC files.
 MP3 /WMA /AA C file s in fo lders up to 8
levels deep ca n be pl ayed. Howe ver, the
st ar t of playback may be delaye d when
t her e are n umerou s levels of fo lders. Fo r
this reason , we re commen d using no
more t han 2 leve ls o f fol ders.
 Th e order c hanges depend ing on the
perso nal compute r an d MP3/WMA /AAC
e ncoding software you use.
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5. TIPS FOR OPERATING THE AUDIO SYSTEM


6. TIPS FOR OPERATING THE AUDIO SYSTEM

TERMS
ID3 TAG  Thi s is a method o f emb eddin g track-
rel ated inf ormatio n in an MP3 file. This
emb edde d informat ion can i nclude the
tr ack title, the artist’s name, the album
t it le , the music genre, the year of
pro ducti on, commen ts, cover art and
ot her d ata. T he co ntents can be free ly
edited using sof tware wi th ID3 tag ed itin g
f uncti ons. A lthough the tags are re stricted
to t he number of ch aracters , the
inf orma tio n c an b e viewe d when th e track
is p layed back.

WMA TAG  WM A files can contain a WMA tag t hat is
used in the same way as an ID3 ta g. WMA
ta gs carr y information such as track ti tle,
ar tis t n ame.
WMA  WM A (Win dows Med ia Aud io) is an
aud io comp ression f orma t developed by
Microsoft
®. I t compres ses files int o a
si ze sma ller than t hat of MP3 fil es. The
decoding fo rmats for WMA file s are
Ver. 7, 8 and 9.
 This product is pro tected by certain
intell ectual prop ert y rights of Microsoft
Corp oration and th ird p artie s. Use or
dist ribution of such t echnolog y outside of
th is produ ct is prohibi ted w ithout a license
fr om Micro soft or an authorized Mi crosoft
subsid iary and third part ies.

AAC  AA C is sh ort for Advanced Audio Cod ing
and re fers to an au dio c ompressio n
t echno logy st andard u sed w ith MPEG 2
and MPEG4.

m3u 
Play list s created u sing “WINAMP”
sof twar e have a pl aylis t file ex tensi on
(. m3u).

MP3 
MP 3 is an audio compression stan dard
det ermi ned by a working group (MPEG ) of
the ISO (Intern ationa l Sta ndar d
Organ ization). MP 3 compresses aud io
dat a to about 1 /10 the size of t hat on
co nve ntiona l CDs.
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