household appliances control device for the elderly on how to encourage universal usability in the...
TRANSCRIPT
Household appliances control device for the
elderly
On how to encourage universal usability in the home environment
Introduction Multi-modal interface for elderly and visually impaired
users Project description
Investigation of musical earcons Comparison of three modalities:
Audio Vs visual Vs audio+visual Use of musical earcons in a household appliance
control device aimed specially at elderly and visually impaired users.
Interface
ImageSound
General users group
Elderly
Visually impaired
Deaf
Model of the proposed interface in relation with various users groups.
Multimodal User Interface
Domotics Domotics, the application of
information and communication technologies for more comfort and convenience in and around the home (Plesea,02)
Role of computers in everyday life (office, home, public spaces)
Elderly Increase ageing population Sensory loss:
Hearing loss Vision loss
Psychological and social gain
Musical Earcons Earcons: Non-verbal audio messages
used in the user-computer interface to provide information to the user about some computer object, operation or interaction.
Musical TunesSub7.wav
Motif2.wav
+Earcon
on
off
Appliance 1
Appliance 2
Appliance 3
Appliance 4
Appliance 5
Appliance 6
Motive 1Motive 2
Earcon composition structure
First component from the status information (mutually exclusive) and second component from the appliance/s component (mutually exclusive).
Interface Design Tools used in the design process:
Cognitive science Participatory design Iterative design
Design Process
Technical constrains
Human constraints
Users preferences
Users evaluation
Final Product
Human-machine interaction principles
Cognitive knowledge
Participatory design
Visual interface
First set of iconspresented
Selection
Second set of icons presented
Modification
First icons interface prototype
Icons Design process
The first set of 6 icons was presented to rest home residents.From those 6 icons 3 were selected as the preferred ones among the interviews.The 3 selected items were presented to staff and students at JMU age ranging from 18 to 62 and to visually impaired users aged from 21 to 58.
Bath design process
Audio interface
First set earconsdesigned
RedesignSecond set earcons developed
First earconsInterface prototype
Modification
Earcons Design Process
The first set of earcons was developed and redesign by music expert.Second set of earcons is analysed and modified according to earcon design principles, and opinion given by visually impaired users.
Audio interface
Bath Off
Bath On
Bath Off
Bath On
Visual interface
Evaluation Speed of performance Errors:
Type 1:Wrong identification of appliance and status
Type 2:Wrong appliance identification Type 3:Wrong status identification
Subjective evaluation
Pre-test results Number of error
greater than expected; 71% incorrect
identifications
Table results Minimum Maximum Mean Std. Deviation
AUDIO 3.600 6.230 4.6920 1.125909
VISUAL 1.950 8.900 4.6720 2.695203
MULTIMOD 1.710 3.060 2.7140 .576394
Table 1. Test 2 Descriptive statistics, time in seconds.
Conclusions Welcome idea; both elderly and
visually impaired liked the idea. Learning time; long and hard Design needs improving
Future steps Test using different musical
instruments Test while users are engaged in
other activities
Why are we not advancing as expected?