Thanks Dave. Theoretically then, for a given listening position (for which we position a mic in order make impulse responses), if we make impulse responses for every possible location in the space, it would be possible to spatialise a sound with both angular and distance cues, through a process of convolution with the various impulse responses and subsequent ambisonic decoding?
Iain Em Sex, 2013-05-03 às 12:10 +0100, Dave Malham escreveu: > 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 > > _______________________________________________ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound > > > > > -- > 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' > > > _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
