luận văn nét âm thanh file .wav theo chuẩn mpeg

ĐỒ ÁN TỐT NGHIỆP
ĐỒ ÁN TỐT NGHIỆP




Đề tài:
Đề tài:




NÉN ÂM THANH FILE *.WAV THEO CHUẨN MPEG
NÉN ÂM THANH FILE *.WAV THEO CHUẨN MPEG


ĐỒ ÁN TỐT NGHIỆP
ĐỒ ÁN TỐT NGHIỆP




Đề tài:
Đề tài:




NÉN ÂM THANH FILE *.WAV THEO CHUẨN MPEG

NÉN ÂM THANH FILE *.WAV THEO CHUẨN MPEG
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KHOA CÔNG NGHỆ THÔNG TIN


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8BD<BB=9IG
•
•


:2C:8BH278]
:2C:8BH278]
FGE
FGE
F+)*'C"'=#+"#!'"7D
F+)*'C"'=#+"#!'"7D
I
I
)?F7'P)-!-)!+'
)?F7'P)-!-)!+'
=)#!)"Q
=)#!)"Q
FGF7E
FGF7E
'*-'
'*-'
==F7!!+'=)#!)"QE
==F7!!+'=)#!)"QE
 !; !!+'#='?"FE
 !; !!+'#='?"FE
FG7E
FG7E
K
K
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#)$)!+ 2!'#!0!+!
#)$)!+ 2!'#!0!+!
>
>
#;+,3;+;'!++/3)$6
#;+,3;+;'!++/3)$6
•
•
?/0h;:5?0<?^]A.6<2/<NB.2C01hK?3052M01^L1:.E010BF42OB.2/JH0p
?/0h;:5?0<?^]A.6<2/<NB.2C01hK?3052M01^L1:.E010BF42OB.2/JH0p
5?018BG
5?018BG
•
•
#Z:0?2J#J?A:<8:S?.A:01[G
#Z:0?2J#J?A:<8:S?.A:01[G
•
•
#Z.A?j<:8?A:0?2J#J?A:<8.J[G
#Z.A?j<:8?A:0?2J#J?A:<8.J[G
@
@
'!++= 4+R+N!*Q
'!++= 4+R+N!*Q


2G
2G

?78B.E0101B?S26IB2/8234<HC2<.001F=6:
?78B.E0101B?S26IB2/8234<HC2<.001F=6:
G
G
•
•
#B294S:01B?@F=9<8F6QR@?E0QNRL0B29K<2C4=Cp)NRG
#B294S:01B?@F=9<8F6QR@?E0QNRL0B29K<2C4=Cp)NRG
•
•
#B294S:IB2/8234>`0B8BF=6018F6)QQR@?E0NRG
#B294S:IB2/8234>`0B8BF=6018F6)QQR@?E0NRG
>G
>G
B?82P0;.EZJ?_H?0<K42;N:01[
B?82P0;.EZJ?_H?0<K42;N:01[
•
•
h1F=O01<B?^ZBJ?;B.5A42;N:01[];:0BJ28F6B:?7HF/01<B?L4.X:234
h1F=O01<B?^ZBJ?;B.5A42;N:01[];:0BJ28F6B:?7HF/01<B?L4.X:234
S=/:4.7882P0;.ES264F/<8.ZA[j2/<@Y0B;?O<./4.78h01F=O01<B?^
S=/:4.7882P0;.ES264F/<8.ZA[j2/<@Y0B;?O<./4.78h01F=O01<B?^
<G
<G
2q011:=/:B290
2q011:=/:B290
•
•
2q011:=/:B290<./@.7J.701526QQR@.E:S=/:<2/<82P0;.E<B?V
2q011:=/:B290<./@.7J.701526QQR@.E:S=/:<2/<82P0;.E<B?V

)QQRLS26<260182q015?30@.E:S=/:<2/<82P0;.EU)QQRG
)QQRLS26<260182q015?30@.E:S=/:<2/<82P0;.EU)QQRG
AG
AG
B?0B2E88B=6:Z?4I.J2542;N:01[]
B?0B2E88B=6:Z?4I.J2542;N:01[]
<B?8B?.8B=6:1:20G
<B?8B?.8B=6:1:20G


LS
LS
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)$)!+ 2!'!++8
•
•
,H601>.75.9<8B.301@?g<B:28D0B:?7H2348B20B8B260B<2/<
,H601>.75.9<8B.301@?g<B:28D0B:?7H2348B20B8B260B<2/<
;H>p>20A8B?.82P0;.EL8F=01F/01S=/:>2q011:=/:B290
;H>p>20A8B?.82P0;.EL8F=01F/01S=/:>2q011:=/:B290
→
→
5.9<
5.9<
;H>p>20AG
;H>p>20AG
•
•
 2/<@Y0B;.E5F=901<B?<HC24.X:>20A123K>=C:<2/<>20A5230
 2/<@Y0B;.E5F=901<B?<HC24.X:>20A123K>=C:<2/<>20A5230

<270>2m01<2/<N?E8_HC2>F=/<
<270>2m01<2/<N?E8_HC2>F=/<
→
→
4.3B`0B234p82345K/G
4.3B`0B234p82345K/G
•
•
?EH4F/<8.<HC24.78>2q014260B.CB=001F=O01<B?8B`
?EH4F/<8.<HC24.78>2q014260B.CB=001F=O01<B?8B`
NB.30142OB./20./G
NB.30142OB./20./G
•
•
1F=9<529:Lj2/<@Y0B;.E>:8<2P08B:?E8@?g42OB./2;2.<B.
1F=9<529:Lj2/<@Y0B;.E>:8<2P08B:?E8@?g42OB./2;2.<B.
0B:?XH;:0BJ2>=C:S:?7<5F=9018FCB./2026K8B2EIB=0@F=601<.01
0B:?XH;:0BJ2>=C:S:?7<5F=9018FCB./2026K8B2EIB=0@F=601<.01
<B?G
<B?G
•
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$Y0BA2901A.601AFO5:?7H>:8]
$Y0BA2901A.601AFO5:?7H>:8]
TUU
B2K@.g:B2K1:FO01HK?30<2EHB`0B
$2M8:0IH8S26.H8IH8T:5?e
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
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BH2g0>YJ24?AFO5:?7H
rI;K<B.r:0:8:25:;?Z[e
r;H>>20Ar:0:8:25:;?Z[e
r4A<8r:0:8:25:;?Z[e
r5 Ir:0:8:25:;?Z[e
,H601>.75.9<0B:?PHIB2@?gjFC5K/AFO5:?7H
rd:0A.dr;H>>20AZ[e
rT:58?Jr;H>>20AZ[e
D0B,<B.<2/<@F=601J20B:?PHIB2
r4A<8r;H>Z[e
2/<@Y0B;.E>:8@?g42OB.2/4.7842XHAFO5:?7H
r:08?J28:.0r5 IZ[e
B:TJ24?S26.A.601>:8
rT.J428r>:8;8J?24Z[e
264;29<B>HTT?J
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$./018B:?E8>Y1B:
5.;?r>:8r;8J?24rdZ[e
$./01T:5?01H.P0
2S?r<5.;?Z[e
BH2g0>YSH601@?74
B=C:829.4.3B`0B234p82345K/
D0B<2/<B?7;.E<HC2>.75.9<82P0;.E
B=C:829.AFO5:?7H8D0B,
B=C:829.42C01I.d(k:lGQV:VQ(
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S:<B.IB?/IG,.@:?PHN:?70S?P8B=6:1:20<HO010BF8J`0B@.7<.60B290<B?E
0?30@.P2/0026KAF601529:=C4F/<01B:?30<F/H4.78;.EIBF=01IB2/I0?/0234
8B20BGJ?30<=;=C@./j23KAF901IB2P04?P48BFC01B:?740?/02348B20B
8B?.<BH2g0#r52K?JG2M8NB2/<LA.4=/:<Bi@2/0B1:2/2348B20B
8B?.IBF=01IB2/I<BHC_H200?30<B2E85F=9012348B20B;2HNB:0?/0<BF2
@F=9<0BF4.014H.E0G
B?E0BF010BFO011`@298@F=9<8J.01@.P2/0026K<BHCK?EH5260B2m4
1:H/I?4<./8B?g02s4>2s8@F=9<SFO01B=0S?P42M85K/8BHK?E8G
2/<N?E8_H2C026KJ2E8_H208J.901S26BFOHD<B<B.4.9:B.298@.70101B:?30
<F/H;2H026KG ,3;+!!")'0
F60BFO01N?E8_H2C@298@F=9<526<=;=C@?g?401B:?30<F/H8:?EIS262/I
AH901NB.301<Bi0?/02348B20B426<.60F/01AH901@?g0?/00B:?PHA2901AFO
5:?7HNB2/<G
H.E:<H601?4j:0>26K8.C5.601>:?E8=0;23H;2s<@?E0B2PK1:2/.]
Y,++.R+S26##!+9Q#!"7+NT.S26T@2O
BF=/01A2X0S261:H/I@=O82708`0B@?g?4B.2608B260B@?P826:026KG