Hi there,
The two main mechanisms (which are certainly not the only ones!) for
distance perception are the ratio of direct to reverberant sound and the
pattern of early reflections. Both of these are captured with B format
impulse responses but of course only for the given source/listener/room
configuration You can edit the impulse response to some extent to change
these or record multiple IR's and interpolate between them - but frankly it
might be better to build models based on the recorded IR's and/or room
plans and then then synthesise the IR's.
Dave
On 3 May 2013 11:00, Iain Mott <m...@reverberant.com> wrote:
> Hi list, I wonder if someone could clear up some doubts I have:
>
> Does an ambisonic impulse response recorded in a space, with microphone
> and impulse source at specific locations, reproduce any distance cues
> when convolved with an anechoic mono source and decoded ambisonically
> over a speaker array, or just angular cues?
>
> I know that HRTF filters are recorded anecoically, so distance of the
> impulse wouldn't matter, as i understand it. But what if impulses were
> recorded at various angles and a particular distance in a live room? How
> would one set of angular responses at a given distance compare with
> another set made with the same angles but at a different distance?
>
> Thanks,
>
> Iain
>
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--
As of 1st October 2012, I have retired from the University, so this
disclaimer is redundant....
These are my own views and may or may not be shared by my employer
Dave Malham
Ex-Music Research Centre
Department of Music
The University of York
Heslington
York YO10 5DD
UK
'Ambisonics - Component Imaging for Audio'
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