this is for holding javascript data
Joakim Johansson renamed sectionLimitations__.tex to Limitations.tex
about 10 years ago
Commit id: 3687b2e133ebb883fb9682debdb07c09597c568d
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\section{Limitations}
Apart from being limited in time, one limitation is the ability for
the audio to be heard from the correct direction when the user is
standing still. It would be possible to use the gyroscope to calculate
the direction from which the sound is supposed to be heard from -
if the user is holding the phone in his/her hands, that is. If the
phone, however, is placed in the user’s pocket (or the like) the application
has to depend on how the user is approaching the goal destination,
using GPS technology.
When starting writing this report, possibilities to enhance the experience
with 3D positional audio was still being researched by members of
the group. There’s an API called OpenSL ES that claims to make it
easy to position audio binaurally (as well as processing it in other
ways) \citep*{KhronosGroup2014}. However, as for 2012, no actual
Android device seemed to support that specific feature \citep{Ratabouil2012}.
Neither did any of the project groups own phones. It turned out a
device had to implement a profile provided by OpenSL ES in order to
make use of all its functions.
Instead, if the sound is supposed to be heard from behind the user,
it will instead appear from one of the ears and gradually move towards
the center as the user is rotating towards the source. A voice or
sound informing the user that he/she is heading towards the wrong
direction might be a good alternative if the former turns out to be
difficult.
When developing the application, consideration that people might listen
to music when running, will be taken into account. Ideally for user
should be able to listen to music alongside using the application,
or possibly make the experience fun enough for the user not wanting
to listen to music while using the application.
