Præsentationen blev holdt ved InfinIT-konferencen SummIT 2013, der blev afholdt den 22. maj 2013 på Axelborg i København. Læs mere om konferencen her: http://www.infinit.dk/dk/arrangementer/tidligere_arrangementer/summit_2013.htm

1. Usability
og
Interak1onsdesign
SUMMIT
-­‐
konferencen
København
22
maj
2013
Lars
Bo
Larsen
Lektor,
ph.d.
Ins1tut
f.
Elektroniske
Systemer
Aalborg
Universitet

2. Overview!
1. Introduction!
2. Displayless Interaction (D-I)!
– Example of Infinit project!
– AAU, B&O and Radiometer!
3. Interessegruppen U&ID!

3. Motivation:!
Common wish to investigate the potential of
interaction with high-end IT devices without
displays:!
• ”Putting displays on devices is so nineties”!
• ”Smart devices don’t need displays”!
• ”Women hate LEDs and flashing displays in the home”!
• “Displayless is the new high end, displays are
mainstream”!
• “Displays are anti-social, require visual attention”
!
!

4. B&O’s
BeoPlay
A9
Radiometer’s
ABL90

5. Iden1fied
both
research
and
commercial
goals
• Mul1tasking:
Visual
aUen1on
demands
more
cogni1on
than
for
example
tac1le
• Removes
visual
aUen1on
from
interac1on
• Research
can
be
used
on
future
products
• Displays
add
complexity
(designer
are
tempted
to
add)
• Displays
are
lazy
UX
design
• Cultural
differences
are
minimized
without
visual
indica1ons
-­‐
no
language
• Cheaper
produc1on
and
products
• Displays
are
fragile
and
requires
cleaning
–
beUer
hygiene
without
• Simple
and
clean
look

6. Experiment with perceived sound location!
Main Problem:!
– Displays can use e.g. flashing LEDs to steer the users
attention!
– Can sounds give the user a particular directional
attention (cues) about where to interact on the user
interface, without actually playing the sounds from the
locational area?!
– Use generic sound patterns, not metaphorical sounds
(e.g. birds twitter) to indicate direction!
– A generic pattern could be high or low tones, rising or
falling and similar!

7. Psycho-acoustics and Human Perception!
• Humans can most accurately determine the origin
of sound sources in azimuth (left-right), and less in
the median-plane (up-down) !
• High frequency sounds are perceived to have its
source placed higher than a low frequency sound,
given that both sounds are transmitted from the
same loudspeaker/source!
• Ecological psychoacoustics; humans perceive
sounds as a part of context/product/sources, not in
terms of frequencies. !

8. Experiment!
• It is the information in the sounds
themselves, that guide the users to the
correct location on the device!

9. Experimental design!

10. Results
(are
not
yet
available)
Experiment
is
s1ll
underway:
– 50-­‐70
test
users,
about
300
sounds
per
user/
15.000
samples
• University
goal:
Iden1fy
generic
paUerns
to
form
design
guidelines
– Publish
results,
generate
new
knowledge
• Companies
goal:
Design
their
own
sounds
– Use
in
products

11. In
addi1on….
B&O
and
Radiometer
work
on
own
products
and
support
research
and
students
• 5
thesis
students
working
on
the
project
– Develop
framework
for
UX
work
in
Danish
companies
– Inves1gates
efficient
methods
for
early
conceptual
design
– Inves1gates
the
poten1al
of
designing
“mechanical
sounds”
to
support
users’
mental
models

12. Infinit
Temadag
20
juni
• Vil
du
vide
hvad
vi
finder
ud
af?
– Infinits
interessegruppe
for
Usability
og
Interak1onsdesign
holder
temadag
I
Aalborg
den
20
juni
– Præsenta1on
af
resultater
fra
experimentet
– B&O
og
Radiometer
fortæller
om
deres
designfilosofi
– Stephen
Brewster
fra
Glasgow,
Skotland
Se
infinit.dk
-­‐>
interessegrupper