Information Technology Reference
In-Depth Information
Each of them is like a performance that is spouted from the front of the handheld
fireworks device. Figure 5 shows the view of the fireworks from the user's viewpoint.
Also, six varieties of audio were played to match the visual contents. They were
played in the following order: the sound of an open fire burning, the song of a Japa-
nese bush warbler and a “shishiodoshi” (a water-filled bamboo tube which clacks
Ultrasonic oscillator
Tank
Supply fan
Speaker
Amplifier
Vibration speaker
Battery(Li-Po)
Micro controller(mbed), Wireless module
Decoder IC
AR Marker
Section for holding
(b)
Fig. 4.
a) Photograph of fireworks device b) Cross Section of fireworks device
(a)
(b)
(c)
(d)
(e)
(f)
Fig. 5.
Virtual contents a) Fire b) Sunflower c) Cherry blossom d) Skyrocket e) Japanese maple
f) Snowflake
against a stone when emptied), the chirping of a cicada, the explosion of fireworks,
the chirping of a cricket, and the tinkling of a bell.
4
Evaluation Experiment
The evaluation experiment was exhibited on October 24-26, 2013 at the IVRC [8]
(International Collegiate Virtual Reality Contest) 2013 Tokyo Finals held at the Na-
tional Museum of Emerging Science and Innovation.
4.1
Evaluation Experiment
In order to evaluate the system, users were given a questionnaire. 162 questionnaires
were collected from visitors aged between 7 and 68 years old.
The questionnaire consisted of six questions to which respondents awarded scores
between 1 and 5, and a free description.
The questions are shown in table 1, while the
scoring scales by Likert scale from 5(yes) to 1(no). The results for question 5 are
based on 145 questionnaires, and relate to the experience of two users each holding a
