Voice Input and Control Systems

1
Voice Input and Control Systems

• Cherry Abenojar
• Derek Johnson
• Melisa Moore
• David Prill
• Enayat Qayumi
• David Walden

2
Objectives

• History of voice recognition systems
• Applications
• Comparative systems analysis
• Safety analysis
• Our recommendation for Megin

3
History

• Raymond Kurzweil
• character recognition print-to-speech reading
  machine( 1976)
• Automatic speech recognition (1985)
• 1000 words
• Faster more affordable computers
• Discrete dictation recognition (1990s)
• Continuous dictation (circa 1992)

4
Applications

• Medical Staff
• Control of surgical microscopes in operating
  rooms
• Disabled Persons
• Control of household appliances
• Control electrical functions in automobiles
• Control of power wheelchairs

5
Katalavox

• Self-contained package
• Speaker-dependant system
• Isolated word recognizer
• Fast response time (50 ms)
• Can work in noisy environments
• 6000
• Limited to five functions

6
Dragon Systems

• Dragon Tools - custom control for speech
• Dragon Dictate
• Visual C/Visual Basic
• 295
• Dragon Speech Tool - vocabulary development kit
• trainable to individuals pronunciation
• multiple pronunciations for each word
• 295

7
KURZWEIL VoiceCommands

• Understands natural commands (continuous speech)
• Software Development Kits
• ASR 1600 -- manipulate command and control engine
• 2000
• ASR 1500 -- flexible speech recognition engine
• 1600

8
Safety AnalysisPossible Failure Modes

• Software misinterprets command
• Processes command too slowly
• Operator gives wrong command
• Accepts command from non-user
• Software misinterprets conversation as commands

9
Recommendation

• Overpowering system with RAM
• Dragon Systems vs Kurzweil
• Dragon Systems Less expensive