9.
Speech recognition
- Advantages
- Easy to train users
- Other action simulataneously
- For desabled persons
- Problems
- Specialized tasks
- Likely to make mistakes - difficulties in making difference
- Background noise problem
- Speech difficult to interpret
Different situations
- Isolated word recognition - needs only to make difference between words
- Continuous speech recognition - needs to "understand" sentences
Speakers
- Speaker-dependent system
- Speaker-Independent system
Eye-movement recognition
Gaze-driven system for pilots, see fig 11.10.
Key points
- Purpose - data from user to information system
- Usability depends on feedback
- Special keyboards may be suitable
- Pointing and tracking devices for graphical applications