Human
Factors Considerations in Speech Based
Interfaces
nImportant to
differentiate between command based and natural language speech interfaces:
qCommand
speech involves the recognition of token words or phrases, whereas
qNatural language involves the recognition of the full
sentence structures and richness
of a natural spoken language such as English.
nVoice
quality concerns in speech recognition
qInterpersonal variations in voice caused by physical
features, cultural speech
patterns, gender, age, native language, and accents.
qIntrapersonal
variability with time of day, health, background noise