الباب الأول الوسائط المتعددة
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الباب الأول الوسائط المتعددة. استخدامات الكمبيوتر بشكل عام. تطورت أساليب استخدام الكمبيوتر وأصبح الاهتمام الآن منصباً على تطوير الأساليب المتبعة فى التدريس بمصاحبة الكمبيوتر أو استحداث أساليب جديدة يمكن أن يساهم من خلالها الكمبيوتر فى تحقيق بعض أهداف المواد الدراسية. - PowerPoint PPT PresentationTRANSCRIPT
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. : (C.A.I)Computer Assisted Instruction :-
1- ( ) Tutorial .
2- Drill and Practice .
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2/1- .2/2- .2/3- : .2/4- .
3- Simulation .
4- Instructional Games .
: (C.M.I)Computer Managed Instruction :-
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Multimedia.
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: Multimedia
Multimedia ( ) .
1- Soft Ware .
2- Hard Ware .
3- Wires and Connectors . ( ) . . . . .- ( ) .- . . : Text
: Sound
: Graphics
: Still Pictures
: Motion Pictures
: Animations
: Virtual Reality .
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Faculty :- .
- Readability :- .
: Text :-
- Printing Texts :- .
- Hyper Text :- .
- Scanning Text :- .
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:-1- Spoken Words :-- .- .- .- .- .
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2- Music
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Sound Effects
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1- :- ( Plug & Play ) .2- :- .3- :- . Control Panel Start Setting Control Panel Add New Hardware .
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1- My Computer 95 98 Properties Device Manager.
2- Sound Video and Game Controllers .
3- Remove . :
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My Computer Control Panel Multimedia Multimedia Properties ...
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Show volume control on the task bar. Speech recognition
: (Speech)recognition system
3 :-
1-Pre Processing
2-Recognition
3-Communication
(recognizer) (recognizer) (s/w&h/w ( s/w Pre Processing Continuous signal Analog signal :- 1-Pre Processing
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Discrete Signal Binary Or Digital Signal Quantization Threshold :-
Analog signal Discrete Signal Quantization . Pre Processing1- Data Collection & Acquisition
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2- Voiced & Unvoiced Detection
... ( ) Amplitude ( ) Noise Voiced Unvoiced Zero Crossing
Voiced Amplitude
Horizontal Access Zero Crossing .
Unvoiced Amplitude Zero Crossing .3- End Point Detection
Signal Noise Processing Noise Filter Noise .
(Noise) Filter 4Time Wrapping -
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( ) :-
Algorithm ....5- Framming
20 Speech (20 ) Speech Frames Frames (20 ) Frames Frames Frames .
frames frame 6- Windowing
Frames ..... windowing Frame Frame windowing 50% 50% Frame 50% :-
7- Modeling
Speech Single Analog Signal Features Modeling .
8-
Modeling .. .
I.W.RIsolated Word Recognition .
C.W.RConnected Word Recognition .
C.S.RContinuous Speech Recognition .
S.USpeech Understanding W.SWord Spotting Key Word . Neural Signal Gestures Waveform .
Waveform . :-
Waveform Time Energy Amplitude Spectrum : Frequencies Amplitude :-
Spectrogram 3 : Time Frequencies Amplitude wave .
Utterance .
Vocal Folds Vocal Cords Vocal Track Oral Cavity ( ) Nasal Cavity Waveform Acoustic Acoustic Waveform . ...
2-Recognition :
Identification
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Distance Measurement .
Verification
.3-Communication ( s/w & h/w) Security " " " "
.. White Noise Noise Noise
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" " Microsoft Windows Movie Maker VCR( ) DV ( ) .
" " . ( mm8) Hi-8 VHS S-VHS).
1. Windows Movie Maker 2 " " :-
VCR
DV " " ( VCR/VTR DV
IEEE 1394
S-video RCA RCA mini-jack
Windows Movie Maker 2.1 Microsoft Windows XP Service Pack 2.
DV " " ( DV ) . DV " " DV . :
... DV. DV IEEE 1394 . VCR . S-video
VCR S-video S-video VCR DV. S-video
DV DV IEEE 1394 IEEE 1394 .
VCR DV S-video RCA.
S-video RCA . S-video .
VCR RCA VCR DV .
DV DV IEEE 1394 IEEE 1394 .
VCR DV RCA . RCA . VCR.
RCA mini-jack DV. VCR RCA RCA VCR .
Maker Windows Movie
1- VCR DV DV IEEE 1394.2- DV DV.3- DV ( VTR VCR DV ).4- Maker Windows Movie : . " " .5- DV .6- . . : Graphics . :
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: Motivation .
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Lossless compression :
.Lossy compression :
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JPEG GIF BMP TIFF PNG : jpg , jpeg , jfif , jfl
: bitmapped
: ( lossy )
: 24 JPEG : Joint Photographic Experts GroupJPEG . ( 24 ) ( ) . , MPEG , . JPEG , 24 TIFF ... BMP 24 , . " lossy " , . , JPEG .. . ( .. ) . 25 1 : .. ..GIF : Graphics Interchange Format : gif
: bitmapped
: LZW .. Lossless
: 8 .. 1987 : GIF ( 256 ) . LZW ( ) , 1989 . gif 89 . . GIF , 256 . . GIF . , , .Bitmap: Microsoft Windows Bitmap : dib , rle , bmp
: bitmapped
: RLE..lossless
: 32 BMP ... ( 32 ). .. BMP , ( run-length ebcoding .. ) RLETIFF: Tagged Image File Format : tif
: bitmapped
: 48 1986 : . ( Tiff 3.0) 1987 ( Tiff 4.0 ) ( RGB ) , , , ( Tiff 5.0 ) 1988 , ...LZW, 1992 ( Tiff 6.0 ) , CMYK YcbCr ..Jpeg Tiff ( Tiff 6.0 ) , . ( ) . , .. Tiff .
PNG: Portable Network Graphic : png
: bitmapped
: Deflate..lossless
: 48 Png . Gif Png Gif Png .Deflate 256 ( . , 48 , . . " " " Compression " " " : Extreme close up shot : . Very close up shot : . Big close up shot : , . Close up shot : . Medium close up shot : . Medium shot : . Knee shot : . Medium long shot : . Long shot : . Extreme long shot : . : : . : . : .
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: Moving the camera head . : / Pan movement Pan right , Pan left , " " , , , , " " . The following pan , ( ) . / Tilt movement Tilt up tilt down , , , , .
1 dolly out doll n
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2 Trucking
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3 -
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5 Arc
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Zoom
( ) zoom zoom in zoom out . : 1 Dissolve
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2 Wipe
: Lighting :- Technical Resson
800 .
Artistic Reason
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1 Light Quality
Lighting hard Soft Lighting Dispersion 2 Light Intensity
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3 Direction of the light
: " Back Lighting " " Lighting Front " " Side Lighting " " Edge Lighting "
1 Key Light
" Low Key " " High Key " .
2 Back Light
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3 Side Light
.4 Kicker Light
.5 Camera Light
.6 Effects Lighting
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7 Cameo Lighting
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8 Limbo Lighting
9 Coloer Background Lighting
10 Base Light
: 1 Eye Level Shot
2 High - Angle Shot
3 Low Angle Shot
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: Animations " " W.Disney " 24 1-
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: Virtual Reality . 1- Window on World .
2- Immersive .
3- Second Person VR . 1- .
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5- . 1- Interactivity Response Type.
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: .2- Individual Self-Pacing .3- Diversity .4- Integration .5- Timing .6- Globablity :-
- Internet.- Information Superhighways .- .- .- Multimedia E-Mail .7- Flexibility .8- Digitization ( ) Sampling (010101001) (MPEG GPEG) 200 .
1- Drill and Practice .2- Simulation .3- Tutorial .4- Instructional Dialogue .5- Instructional Games .
6- Discovery and Problem Solving .
Hypermedia 1945 () Links Memex . ( ) Links . " ( ) . links .
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2- Links Link :
- Linear .
- Hierarchy ( ) ( ) ( )- Hypercube .
- Directed A Cyclic Graph (DAG) .
- Clumped .
- Arbitrary () () .3- Interactivity .
4- Integration .
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Navigation1- .2- .3- .4- 10 . Navigation Tools Interface.
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1- Next / Previous Buttons .
2- Menu .
3- Keyword Index .
4- Tracker Guide .
5- () Hot Spots Links .6- Concepts Mapping .
7- Search Engine Search Yahoo Google : 1- .2- Tutorial Games . : 1- " " (1989) " (1993) " (1995) " (1997) " " (2000) " "2-
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- Card Based Tools :Hyperactive Card - Apple MacintoshSuper Card - Apple MacintoshVisual Basic - IBM - Icon Based Tools
Author Ware Professional - IBM & Apple Macintosh Icon Author - IBM HSC Interactive - IBM
- Time-Based Tools 3/1
Animation Works Interactive - IBM Macromedia Director - IBM Media Bilta - IBM
1- ( Dazzler ) : .2- ( Scala Solutions ) : .3- ( I Shell ) : K- Quick Time HTML .4- ( Director ) : Quick Time .
: Improvement .
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3- : . Program Evaluation : . : .
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