
Customer service representatives
(CSRs), 233–234
Cutaneous touch, 25
Cybersickness, 130–132, 136–137
CyberSphere, 125–126
Dance Dance Revolution game, 120, 122
Data accuracy, in multimode
interfaces, 361–362
Data analysis, in multimodal
interfaces, 425–426
Data collection and mining
auditory interfaces, 158, 179
IVR interfaces, 235–237, 263–264
multimodal interfaces, 423
Data glove, 78
Data polarity, of sound, 153–154
Data representation and processing, in
auditory interfaces, 157–158
Data requirements
haptic interfaces, 53–56
specifications, 56–58
Data transfer, in IVR interfaces, 247
Days of week collection, in IVR interfaces, 264
Deafness.
See also
Auditory interfaces
IVR interfaces for, 233
multimodal interfaces for, 414
Death spirals, conversational, 202
Degrees of freedom
Food Simulator project, 293–294
haptic interface devices, 36–38, 56
Deictic gestures, 85
Delays, in IVR interfaces, 259
Delta-sigma simulation, 276
Depth, of menus, 332–333
Descriptive labels, in gesture interfaces, 85–87
Descriptive menu options, in VUIs, 221
Design guidelines
auditory interfaces, 182–187
gesture interfaces, 94–98
haptic interfaces, 60–64
IVR interfaces, 247–264
locomotion interfaces, 137–139
multimodal interfaces, 426–430
multimode interfaces, 374–375, 377, 381–386
olfactory interfaces, 286–288
small-screen interfaces, 343–351
taste interfaces, 304
VUIs, 220–224
Design principles, 12
consistency, 15–16
error recovery, 17
feedback, 16–17
future, 18–23
simplicity, 17–18
user conceptual model and goals, 13
user knowledge, 14
user skills and capabilities, 14–15
Desktop, in auditory interface
accessibility, 165–166
Detail design, in auditory interfaces, 184–187
Detection threshold value, in olfactory
interfaces, 284
Dial-through, in IVR interfaces, 249–250
Dialog boxes, in small-screen interfaces, 337
Dialog design, 184
Dialog managers, in multimodal
interfaces, 405
Dialogs, directed, 217
Dictation systems, 214
Dictionaries, in speech recognition
systems, 210–211
Differential threshold value, in olfactory
interfaces, 284
Diffusers, in smell generation, 270, 273–275
Diffusivity, in odor intensity, 283
Digital audio players, 319
Digital paper-based interfaces, 411–413
Digital storage oscilloscopes (DSOs), 320
Dimensions, auditory, 153–154
Directed dialogs, 217
Direction, in locomotion interfaces, 108, 110
Disabilities
Braille displays, 48
computer games for, 165
IVR interfaces, 233
multimodal interfaces, 413–414
multimode interfaces, 380
Disambiguation
gesture interfaces, 97–98
multimodal interfaces, 392–393
Discourse markers, 223–224
Displays
auditory interfaces, 156–157, 159–161,
174–175, 177–182
locomotion interfaces, 121
small-screen interfaces, 312–314, 329–330
Disruptive interpretations, 428–429
Distinct menu options, in VUIs, 221
Distraction, in locomotion interfaces, 133–134
DMS100 system, 231
Document cameras, in small-screen interface
testing, 341–342
Dollars & Scents system, 274–275
Index
448