VOICE RECOGNITION

1
VOICE RECOGNITION

• What is it?
• Who use it?
• What is it used for?
• Difficulties
• How does it work?
• Example

2
Overview
3
Categories of users

• HAND PROBLEMS
• Users who write poorly or not at all, but are
  able to speak clearly
• PROFESSIONALS
• Users with no time to type or who are not good
  typists
• LEARNING DISABILITIES
• Users with some kind of learning disabilities

4
Difficulties

• Signal processing
• Physics
• Pattern recognition
• Communication and information theory
• Linguistics
• Physiology
• Computer science
• Psychology

5
Spectrogram

6
Pattern recognition

• Template method
• Statistical method
• Hidden Markov Model