Eero - try showing a still shot of the scene, rotated through 90 - that should 
do it...;-)

Dr. Peter Lennox

School of Technology,
Faculty of Arts, Design and Technology
University of Derby, UK
e: p.len...@derby.ac.uk 
t: 01332 593155


-----Original Message-----
From: Sursound [mailto:sursound-boun...@music.vt.edu] On Behalf Of Eero Aro
Sent: 26 November 2014 12:32
To: sursound@music.vt.edu
Subject: Re: [Sursound] Oculus Rift Visual Demo + Ambisonic Audio Available?

Hi

Exactly what Dave wrote.

The human auditory system has also "learned" and "got used to" which particular 
sounds "normally" come from above and from below. Leaves rustling in the wind, 
birds, aeroplanes - from above. Footsteps etc. from below. I have tried playing 
such sounds from the "wrong", opposite direction The listeners have been very 
confused about the direction. In some cases they didn't even recognize the 
sound.

Rotating the soundfield "onto it's side" (= rotating laterally -90
degrees) makes the
listener totally whacked up, as an aeroplane just simply doesn't pass you by 
from your _left_ side. :-)

Eero



Dave Malham wrote:
> Have I really heard sounds from below me?? Yes,  all the time - every 
> time I walk around (other than a really, really, soft carpet), in 
> stair wells let alon leaning out of windows, in cable cars, in 
> microlights, hot air balloons, mesh floored lighting bridges - I could 
> go on and on (and I frequently do :-). Mind you, it's not as robust as 
> horizontal imaging - witness what happens if you play recordings of 
> birds flying below you (top of Bempton Cliffs in Yorkshire), it's 
> impossible - or very nearly so - to hear them as anything but above.
>
>       Dave
>
> On 26 November 2014 at 03:22, Sampo Syreeni <de...@iki.fi> wrote:
>
>> On 2014-11-21, dw wrote:
>>
>>   The state-of-the-art finds it very difficult to render sounds below 
>> the
>>> listener.
>>>
>>
>> True. But then, at the same time, have you ever truly heard sounds 
>> from right below yourself? Does even the human auditory system 
>> *really* know what it means to "hear something from below"?
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