Jörn Nettingsmeier wrote:
On 12/12/2013 03:26 PM, Stefan Schreiber wrote:
Paul Hodges wrote:
--On 12 December 2013 01:41 +0000 Stefan Schreiber
<st...@mail.telepac.pt> wrote:
You won't need any "base station" for HT, by now!
If you have no fixed reference, how do you cope?
GPS, relative GPS?
i doubt it would be precise enough. the subject is not moving, after all.
Do you add a compass
(and have a command to set the direction of front), or do you allow the
front to drift back into place when there is no movement?
how good are these built-in compasses? i still have a very dumb
smartphone...
Gyroscope, accelerometer...
but those _will_ accumulate errors. doing dead reckoning with just a
gyro and accelerometer requires double integration and is, ahem, prone
to difficulties. check out pynchon's "gravity's rainbow" for a novel
approach to the problem ;)
executive summary: if you are going to do it for less than a few
seconds, you will have to choose _very_ big targets.
the situation is a bit less dire if all you care for is heading, but
you will need a reference every once in a while to re-calibrate your
reckoning, or else default to "in the absence of head movement, drift
back to due north orientation", like paul seid.
which can be irritating and, in the case of "physical" soundscapes,
disorienting.
The reference is either a measured GPS position, or the earth magnetic
field?
Executive summary for the AES and Tonmeistertagung 2014: "You don't
need an (objectively) exact position."
You need a "fixed point", and relative movement to this. This can be
done, as in VR or newish cheap gaming devices.
Best,
Stefan
P.S. Archimedes: "Gib' mir einen festen Punkt, und ich werde die Welt
aus den Angeln heben."
For the English version, I recommend "Google Translation"... :-D
P.S. 2: If you are not afraid of the NSA! "die Welt aus den Angeln
heben" in any language, this is ... very suspect!
(For the Romans, Archimedes was probably more than just a terror
"suspect". The rest is history.)
P.S. 3: Don't do some automated translation of this citing from German
to Arab, BTW! (And don't call your avatar "Muhammad Archimedes" in WoW,
even a bigger mishap...)
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