I hope you have a control where you measure "real" distance perception too.
Not having a "real" control is a fault in many localisation experiments.
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You must simulate at least 2 things.
At close range, you must simulate the curvature of the soundfield. This is
simply proximity for 1st order and the effect is, if anything, exaggerated.
see the Appendix of
"Is My Decoder Ambisonic", Heller et al, AES San Francisco 1980 aka BLaH3
See Daniel
RFI protection is a complex & little understood subject. "Pro" mikes differ
hugely in their susceptibility. There are famous mikes from famous names which
are terrible. The preamp input also needs to be RFI proofed.
Though I lust after a SD 788, Jim Brown says its input socket shells may not b
Thanks John, I see. so it plugs into the power socket.
(I've just purchased a DR-680 in anticipation of getting a couple of Len's
Little Marvels for field recording, so was wondering.)
Neat machine!
David
On 18/04/2011, at 10:41 AM, John Leonard wrote:
> David,
>
> The DR-680 is powered either
David,
The DR-680 is powered either by eight AA cells, or via a 12v DC input from a
wall-wart PSU or an external battery back. The pack I'm using provides 12
volts, so just plugs straight in.
Regards,
John
On 18 Apr 2011, at 01:24, David Worrall wrote:
> Hi John,
> Does this unit plug into t
The (black) InstaSnake with the PPA's zip tied to the base of the mic stand is
reasonably unobtrusive and the shielded CAT5 almost invisible (dep on the colour of the
floor).
Bill
On 17/04/2011 2:59 p.m., Fons Adriaensen wrote:
On Sun, Apr 17, 2011 at 05:44:08PM -0400, Jascha Narveson wrote:
Hi John,
Does this unit plug into the AC socket on the DR-680 or how?
David
On 18/04/2011, at 9:44 AM, John Leonard wrote:
> Update - that's three 8 GB cards with four channels of phantom power turned
> on and 96/24 recording settings. Now, anyone want almost six hours of traffic
> recording ou
Any chance of making it available non-privately, Brian?
David
On 18/04/2011, at 10:11 AM, Brian wrote:
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Update - that's three 8 GB cards with four channels of phantom power turned on
and 96/24 recording settings. Now, anyone want almost six hours of traffic
recording outside our flat?
The battery was still providing power when I terminated the session just now,
so not bad going at all. About five
Interesting! I'd be curious to know where you get with that. What would you
do about the PPAs, though? My impression is that they need to be part of the
signal chain, and that sending straight 48v phantom power to the TetraMic is
somehow bad.
cheers,
j
On Apr 17, 2011, at 5:59 PM, Fons A
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On Sun, Apr 17, 2011 at 05:44:08PM -0400, Jascha Narveson wrote:
> I was using the 6-foot extension cable yesterday. I didn't try it today, so
> I can't comment on whether swapping out the cable today affected the RFI, or
> if was just a different day and wouldn't've happened in any case.
RF i
Folks,
I'm in the middle of doing some tests on battery-powering the Tascam DR-680,
having been pretty shocked by how little time a set of Duracell Ultra AAs
lasted (about an hour and a half) and am having pretty good results with the
badge-engineered Tekkeon unit, which is sometimes available
Hi, David -
I was using the 6-foot extension cable yesterday. I didn't try it today, so I
can't comment on whether swapping out the cable today affected the RFI, or if
was just a different day and wouldn't've happened in any case.
cheers,
j
On Apr 17, 2011, at 5:10 PM, David Worrall wrote:
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
or experiences in distance perception
> experiments? or share some references on this issue?
>
> Thank you so much.
>
> Best regards,
> Junfeng
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Hi Jascha,
What length extension cable were you using?
And does anyone have any experience of the comparative differences between the
the different lengths?
David
On 18/04/2011, at 6:30 AM, Jascha Narveson wrote:
>
> Hi, Bill -
>
> Yep - I skipped the extension cable today and just had the mic
Hi, Bill -
Yep - I skipped the extension cable today and just had the mic go from the
breakout cable to the PPAs, and today's recording didn't turn up with any RFI,
at least when I played back the first couple of minutes of the test recording.
Hopefully the remainder will be RFI-free, as well
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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