Download - Voice Mouse
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VOICE MOUSE1
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CONTENTS :
INTRODUCTION
HUMAN COMPUTER INTERFACES
VOICE MOUSE
HOW IT WORKS
COMPARISON ADVANTAGES
LIMITATIONS
APPLICATIONS
FUTURE SCOPE
CONCLUSION
REFERENCES
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INTRODUCTION
Voice Controlled Human Computer Interface
User can fully manipulate the computer via voice
commands
Ideal method for disabled persons who cannot use
conventional computer interfaces such as
keyboard,mouse.
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HUMAN COMPUTER INTERFACES
1. Traditional Interfaces
i. Switches
ii. Joysticks
iii. Pneumatic devices
Cons:
Users sacrifice valuable degree of freedom
Feels uncomfortable
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Cntd
2.New generation of interfaces
i. Eye movements
ii. EEG signals
iii. Infrared signals
Cons:
Complex system
Requires substantial motor co-ordination
Highly specialised and cost prohibitive
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The first voice mouse is introduced by an Israeli-
American firm in 2002.
Speech is a natural communication means for
humanbeing
Allows you to 'touch' any object on a computer
screen by voice
Provides hands free computing
Useful to both able and disabled users
VOICE OPERATED MOUSE
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This system consists of six main blocks:
Keyboard and the mouse layouts
Uses 17 utterances
D6106 speech recogniser
Different approaches for speech recognition
DTW approach
HMM approach
Neural Network based approach
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Contd
Headset incorporated with a microphone and two
mercury switches
Keyboard circuit and the mouse circuits
Mouse control circuit
Microcontroller
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User: gives command.
Microphone: Sound wave electrical pulse.
Sound Card: electrical pulse digital signal.
Speech Recognition Engine:digital signals phonemes.
Command: Finally we get text command.
Operations: For every command the software performs
the corresponding operations.
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Example-1:
If we want to explore start menu, we have to give
command Start Menu. And after command execution
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ADVANTAGES
Improves Working efficiencies and overall
productivities.
Low complexity and cost
Simple and Userfriendly
Convenience ,accuracy, small size
Free the user to be far more mobile
If the ports of mouse and keyboard do not workproperly.
Does not require extended operational training
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Evaluation of voice controlled HCI
Quadtree based mouse trajectory analysis
Tasks are conducted using both systems
Mouse Tracker:-record of mouse movements
L={(xi,yi)},1
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Construction of quadtree
Each node contains:(x,y) indicating location
of mouse cursor
Integer variable count
4 subnodes
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VOICE DISABLED
VOICE ENABLED
Comparison:
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LIMITATIONS
Complex problem of spontaneous voice recognition,
namely hesitations, out of vocabulary.
Speech Recognition Engine takes some acoustic signals
which are not required.
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APPLICATIONS
Persons with disabilities
Motor Handicapped
Astronauts
Requirements of professionals such as surgeons.
Even those who are not able to "point and click.
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FUTURE SCOPE
o To develop our voice command in native languages
besides English.
o To remove the acoustic signals that is not expected in
our software.
o In PDAs and mobile phones
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CONCLUSION
The interface of the software is user friendly.
Voice input which will save time and make life easier.
It is capable of meeting the requirements of people
unable to use their hands.
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REFERENCES
X.Y. Kou, X.C. Liu, S.T. Tan, Quadtree Based Mouse Trajectory
Analysis for Efficacy Evaluation of Voice-enabled CAD,VECIMS
09 IEEE International Conference,2009.
Mu-Chun Su, Ming-Tsang Chung Voice controlled Human
Computer Interface for the disabled, Computing and Control
Engineering Journal, Oct 2001.
www.wikipedia.com
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