VR slides 22 Flashcards
audio motion is similar to what
visual motion paralax - additional info provided through multiple views of sound source
auditory motion parallax simulated with what two movements
passive and active
better detecting auditory motion during what type of movement
active
3 necessary items to auditory renderr
signal processing, auditory modeling, auralization
signal processing (domain)
time versus frequency domain- depend on fourier transform
what does the smapling rate need to be
twice the highest frequency trying to achieve
auditory modeling is similar to vision but less what is requried
spatial resolution
auditory rendering (3 steps)
head movement - auditory virtual world generator - auralization (must all be fast)
why are experiments on human subjecs necessary
to prove a novel method, technology or practice is benefeicial
what types of research fall under testing human subjects
experimental psych, human factors research, human computer interaction
scientific method
observation, ask a question, hypothesis, develop testable prediction, gather data, refine or alter or reject hypothesis, dvelop theory, make observation
experiemntal process from start to finish (7 steps)
motivation, hypothesis, dsign, collection, analysis, interpretation, presentation
human vr loop
vr (replaces environment) > displays > sensed by sensory signals from environment and hit senses in organism > perception in organism> actions by organism > create change in enviornment through interaction and then sensed by sensors from vr
hypothesis formation (2 questions to ask)
what are likely cause and effect relationships (common sense) and what do we know already (literature search)
eelkes motivation
develop better vr locomotion
eelkes hypothesis
if you devleop more natural ways of locomotion it will lead to greater immersion and less simulator sickness
pogens motivation
to understand visual and vestibular conflict detection and relation to simulator sickness
pogens hypothesis
conflict detection should depend on variability
experimental design questions
what can we manipulate to get an effect (independent variables) and what can we measure to show an effect (dependent variables)
eelkes experimental disgn
assees user preference fro vr step or autowalk
pogens experimental design
vestibular only, visula only (these two are single cue), visual and vestibular (ml integration)- response whihc movement was faster
check sequential and then simultaneous (cross modal)
data collection question
practical (lmitations of time, cost, availability)
is it ethical (privacy, injury)
vr research methods of collectng data
surveys (subjective ratings) or psychophyical methods (measure stimulus perception)
what are the two questionairres people ask with vr
simulator sickenss questionairre (16 symptoms, rate 0 - 3 severe) and presence questionnaire (rate responsiveness of enviornemnt to your actions)
