Actually, the butterfly flap thing is not really good either.
In chaos, things do not cause other things. The system is
essentially noncausal.
This is a trick point. But if a system depends unstably
on its initial state, it makes no real sense to say that it
depends on its initial state at all in
Helmut Oellers wrote:
> 2011/4/26 Dave Malham
>> On 24/04/2011 19:11, Helmut Oellers wrote:
>>>...modern computers are also clever. Today nothing is unaccountable if we
>>> know the formula and all variables.
>>
>> That's a BIG assumption - and given the essentially chaotic (in the
>> mat
On 2011-04-28, Helmut Wittek wrote:
it's no easy task to evaluate distance perception under anechoic
conditions (which obviously hardly exists).
By the way, I think that is one of the reasons anechoic rooms are
perceptually so overwhelming and induce the kind of anxiety they do: in
the absen
Hello Junfeng,
it's no easy task to evaluate distance perception under anechoic conditions
(which obviously hardly exists).
We did this during my PhD research on WFS.
Have a look at our paper:
Wittek, H., Kerber, S., Rumsey, F. and Theile, G.
Spatial perception in Wave Field Synthesis rendered s
m: gre...@math.ucla.edu
> To: sursound@music.vt.edu
> Subject: Re: [Sursound] distance perception in virtual environments(OT)
>
>
> The deterministic universe idea departed from serious science
> almost 100 years ago since qunatum mechanics is by nature
> nondeterministic. (More precisel
The deterministic universe idea departed from serious science
almost 100 years ago since qunatum mechanics is by nature
nondeterministic. (More precisely, 80 some years ago if you want to wait
for people to have realized exactly how intrinsic the nondeterminacy
was--Heisenberg formulated his
2011/4/26 Dave Malham
>
>
On 24/04/2011 19:11, Helmut Oellers wrote:
...modern computers are also clever. Today nothing is unaccountable if we
know the formula and all variables.
That's a BIG assumption - and given the essentially chaotic (in the
mathematical sense) nature of the Universe,
Hi
On 24/04/2011 19:11, Helmut Oellers wrote:
...modern computers are also clever. Today nothing is unaccountable if we
know the formula and all variables.
That's a BIG assumption - and given the essentially chaotic (in the mathematical sense) nature of
the Universe, wrong. We are now pre
...modern computers are also clever. Today nothing is unaccountable if we
know the formula and all variables. Audio is no mysterious. The complete
sonic field would be calculatable. The only problem is the huge amount of
variables. In principle, yet, we are able to calculate any wave front of th
On 20/04/2011 22:04, Helmut Oellers wrote:
Hi David,
you are not alone in your insigthes. Some single discrete reflections are
the most important fact for estimation of source distance.
There exist research from Helmut Wittek, who was proven, play the
reverberation from four different directions
Hi David,
you are not alone in your insigthes. Some single discrete reflections are
the most important fact for estimation of source distance.
There exist research from Helmut Wittek, who was proven, play the
reverberation from four different directions is absolutely sufficient. We
cannot use the
On 17/04/2011 02:28, Junfeng Li wrote:
Dear list,
I am now wondering how to subjectively evaluate distance perception in
virtual environments which might be synthesized using WFS or HOA (high-order
ambisonics). In my experiments, the sounds were synthesized at different
distances and presented t
Richard Lee wrote:
> You must simulate at least 2 things.
...
> You have to simulate early reflections and a reverb pattern appropriate to
> source distance. MAG has a paper on this under "Distance Panners" from an
> idea by Peter Craven.
MAG's paper is:
M.A. Gerzon, "The Design of Distance Pan
Hello Junfeng
We cannot perceive the distance regarding the sound source directly. The
both receptors for sound, differently the eyes, are dedicated for perceiving
the direction regarding the source, not the distance. Thus, we must rely
upon natural Stimul, stored by listening experience in our mi
For relatively nearby distance detection such as the buzzing bee or whispering
or conversation (versus more distant sources such as in a concert hall), one
needs to deliver interaural level differences on the order of 10 ot 20 dB with
the corresponding ITD of up to 700 microseconds. (If the sou
On Sun, Apr 17, 2011 at 09:28:28AM +0800, Junfeng Li wrote:
> I am now wondering how to subjectively evaluate distance perception in
> virtual environments which might be synthesized using WFS or HOA (high-order
> ambisonics). In my experiments, the sounds were synthesized at different
> distances
That's an interesting question. The environment you're working in for
synthesis could matter quite a bit. That is, if your working in, or
simulating, an environment with little reverberation it is harder to judge
distance since direct-to-reflected energy ratio is an important cue. The
other importa
Hi,
Gavin Kearney et al have presented their work on "Depth perception in
interactive virtual acoustic environments using higher order ambisonic
soundfields" at the Ambisonics'11 symposium in Paris; the article is available
online at http://ambisonics10.ircam.fr/drupal/?q=proceedings/o6
Best,
Hi,
Date: Sun, 17 Apr 2011 09:28:28 +0800
From: Junfeng Li
Subject: [Sursound] distance perception in virtual environments
Dear list,
I am now wondering how to subjectively evaluate distance perception in
virtual environments which might be synthesized using WFS or HOA
(high-order
ambisonic
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