멀티미디어 자료 압축
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Transcript of 멀티미디어 자료 압축
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-MP3
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MP3?MPEG Audio Layer?MP3 MP3 MP3 MP3 MP3
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1.MP3?MP3 (format) , MPEG Audio Layer 3 .MP3 . . MP3 ., MP3 MPEG Audio Layer 3 ?
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2.MPEG Audio Layer?MPEG(Motion Pictures Expert Group) -MPEG , . MPEG MPEG .MPEG MPEG1 MPEG Audio Layer . MPEG Audio Layer ( ) 3 Layer Layer 3 MP3 .
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(MPEG) MP3 .MP3
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3. MP3 MP3 ? ? MP3 ?
. MP3 CD() .
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3. MP3 . ?
MP3 . MP3 , . MP3 , MP3 .. .1. .2. .
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3. MP3 MP3 . MP3 , ?
MP3 MP3 . MP3 ?
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4. MP3 MP3 2 .(Perceptual Coding) (Psychoacoustic). 1. - . - . - () . - .
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4. MP3 2. (Psychoacoustic) - : (dB) - . - 2KHz~5KHz - (Masking Effect) ; . ; ) .
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5. MP3 MP3 ., . . . , . . . , .( )
, . . . .
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5. MP3 MP3 , .1) 16, 32 .2) , , . ( 3 .)3) , . , ( 0 ) .
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5.MP3 () MP3 .
. . 16 32 .MP3 !; ;
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) CBR VS. VBRMP3 (, 1 ) CBR VBR .CBR : . . , MP3 , .VBR : . . , . VBR CBR , .
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) MP3 MP3 .
. (, 1 ) (; 1 ) .
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6. MP3 - .) 1992 MP3
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6. MP3 ISDN - MP3 ISDN CD .) 92 FFN ISDN MP3 30
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6. MP3 MP3 Play Program
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6. MP3 Player
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7. MP3 MP3 - MP3 - . - , . - ,
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8. . 1. CCCD(Copy Control CD) . CD-R . CD-R CD CD. CD 2001 CD . CD CD , . CD .CCCD
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2. MP3 MP3 MP3 . MP3 .
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MP3 , MP3 . http://pspgate.gamehankook.com/zboard/zboard.php?id=tip&no=47 http://blog.naver.com/bzmania2/10002082382
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MP3 , MP3 MP3 . http://blog.naver.com/82tac/31166074 http://blog.empas.com/jjong97/8891941 http://dharana.egloos.com/1133431/
. - MP3 ? () http://blog.naver.com/vwxyz111/10000175031