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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voice mouse

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