Sorry Im a bit busy so didnt read all. I did quite a similar project with
two concentric rings of speakers one inside the other. My advice would be
to not use ambisonics but Vbap or some form of amplitude panning - sweet
spot is less of an issue. I do a lot of walk around installations and
occasionally for museums,
best,
Gus

On 27 March 2018 at 08:01, Jack Reynolds <jackreynolds...@gmail.com> wrote:

> As far as I know, higher order ambisonics over loudspeakers has a quite
> confined sweet spot. Higher order spherical harmonics produce an in phase
> and out of phase signal in opposite speaker pairs. So if you pan a signal
> towards a particular speaker, the opposite speaker will produce a lower
> level antiphase signal, which will work when you are positioned equidistant
> from both speakers, causing a certain amount of nulling of the air pressure
> at that spot, but positive particle velocity, like a figure 8 mic pattern.
> So as you move around the room, the sonic image will change because of the
> opposite pairs of speakers.
> It’s also very difficult to isolate a sound in a single speaker, unless
> you are working at seventh order ambisonics, with a 64 channel signal.
> So I am wondering why you are considering ambisonics over vbap?
>
> I use the Blue Ripple Sound third order ambisonic plug-ins in Reaper and
> have also been experimenting with the IEM seventh order plugins which could
> be worth experimenting with. Reaper and Nuendo are the only DAWs which will
> give you 64 channel busses for 7th order, and IEM have just launched a
> customisable speaker array decoding plugin. You can also try MATHIAS
> Kronlachers 7th order ambiX suite for binaural decoding at the same time.
> They also free, so you could experiment for nothing!
> PTHD has just updated to 16 channel busses but logic can only do 8, so
> first order only, which won’t give you much positional accuracy.
>
> Hope this helps!
>
> Cheers
>
> Jack
>
>
> Sent from my iPhone
>
> > On 27 Mar 2018, at 00:17, Søren Bendixen <soerenbendi...@gmail.com>
> wrote:
> >
> > Hello
> > I need some advice!
> >
> > I’ve been doing music/sounddesign for museums for a while now (read:
> https://www.asoundeffect.com/museum-sound-design/ <
> https://www.asoundeffect.com/museum-sound-design/>). My next project
> could be the one using ambisonics!…
> > I have never really used ambisonics but have been reading a lot lately,
> and demoing plug ins - up til now only in headphones converting stuff to
> binaural.
> > And in the next few days I´ll test some ambisonics over my speakers. I
> did that a while back and it sounded very cool.
> > I have a studio with 8 ch out, 8 speakers (and a sub) - but hope I can
> get my hands on 8 more channels and 8 more speakers.
> >
> > I have logic Pro x, ableton live 9 (upgrading soon..) and Reaper. I do
> most of my work in Logic Pro X, and would like to stay in Logic - the
> exhibition opens in less than three months…so digging deep into another DAW
> is difficult.
> >
> > I’m a composer and I compose music and sounddesign.I tend to use
> standard technical configurations in odd ways (parallel stereo, some
> sourround configs), Mostly it is ways of composing and arranging every
> sound as a part of a symphony. It do that in different ways - and I started
> out working this way because I was asked to do 3 compositions/sounddesign
> playing in the same room - (please read the article from asoundeffect).
> >
> > Exhibition rooms are also often odd designs - and so is speaker
> placement.
> > But this time I have the possibility to work in 3 circles and this is
> what want to do:
> >
> > - Inner circle: Speak in headphones + two sounddesigns: one related to
> the speak, the other layers from the sounddesign from the two other
> circles. I want this sounddesign to be 3D/Binaural.
> >
> > - Middle circle: 8 speakers hanging from a rig about 4 - 5 meters up
> pointing down into the circle.(45 degrees i guess..). This sounddesign will
> consist of music, local sound related to object/themes in this part of the
> exhibition. This should be in ambisonics. some of this sounddesign will
> appear in headphones as binaural sounds. I can be two different audiofiles
> (managed by Qlab).
> >
> > - Outer circle: 8 speakers placed on the walls - the room is square but
> we will try to create an illusion that it is circular by projecting movies
> on the walls. Here I want another sounddesign consisting of mainly season
> related sound (spring, summer, winter - storm, rain, wind, and just the
> sound of a cold cold morning..).
> > his sounddesign should be ambisonics too.
> > If possible I would like sounds from ex. horses (or people walking or
> wind blowing) wander from the outer circle into the middle circle and into
> headphones. and back.
> >
> > The sounddesign/music from the middle circle and the outer circle will
> blend (and should blend) and when you put on headphones you will hear
> layers of the middle and outer circle designs - so you never leave what I
> call the overall sounddesign.
> >
> > So how do I do that..?
> >
> > First I need to know: Is it true that Ambisonics does not “aim for” a
> sweet spot - Paul Virostek says it does (https://www.
> creativefieldrecording.com/2017/03/01/explorers-of-
> ambisonics-introduction/#more-16883 <https://www.
> creativefieldrecording.com/2017/03/01/explorers-of-
> ambisonics-introduction/#more-16883>) a lot says it doesn’t..?
> > It is very importing to find out about, because an exhibition crowd
> walks around so a narrow sweet spot is no go.
> > And my main reason for using ambisonics is that is believe it is the
> best format to create space/soundroom where you are ex. in the middle of a
> storm. or you walk around inside a composition/orchestra.I also like the
> idea that ambisonics is not depending on a fixed speaker
> configuration..right?
> >
> > So I want to create big spaces BUT the same sounddesign needs both
> overall sound and local sound (sounds that stays in a specific position)-
> and wandering sounds -  it seems to be possible too to blend an overall
> ambisonic full circle of sound with local placed sounds in the same design…?
> >
> > And what software do I need?
> > I guess I need software that can deal with ambisonics files and make
> ambisonics files out of mono, stereo, surround files
> > and software that can convert ambisonics sound into binaural sound for
> headphones.
> >
> > I´m testing
> > Noisemakers ambihead, and Ambipan (good stuff and working in logic too)
> > DearVR music (and tomorrow testing DearVR pro for ambisonics output) -
> (sounds great and the panner is very good)
> > And Logics own binarual output. (seems ok for binaural but misses some
> automation)
> > Wigware (seems ok but cannot work in logic)
> >
> > I’m about to test
> > Waves ambisonics B360 + NX
> > Rondo360
> >
> > Everthing will run in sync controlled by Qlab - I guess Qlab can handle
> ambisonics, right?
> > I found this about Qlab and ambisonics but it involves Reaper
> https://forum.cockos.com/showthread.php?t=161556 <
> https://forum.cockos.com/showthread.php?t=161556>
> >
> > I’m used to do the different layers of sound design in different
> sessions and combining them afterwards but this time I will try and make
> all three in the same session…in logic.
> >
> > I also have sound particles but it is stand alone and I might use for
> some odd stuff.
> >
> > So - what do you recommend?
> > And what do see as problems/issues?
> >
> > I’m sorry for taking your (holliday) time but I need someone to says:
> Buy or get this software and do this - and you´re good :-)
> > And I know I’m addressing my questions to a forum of people how does far
> more weird stuff than this :-)
> >
> > I hope I’ve made myself clear. If not: tell me.
> >
> > Med venlig hilsen/Best regards
> >
> > Søren Bendixen
> > Composer/Sound Designer/Producer
> >
> > Winner of Monitor Industry Award 2016 for the exhibition “Gladiator”, At
> Moesgaard Museum
> >
> > New album Music for exhibitions out 15 January 2017
> >
> >
> >
> >
> >
> > Company: Søren Bendixen & Anette Krag
> > soerenbendi...@gmail.com
> > +45 60624394
> > www.soerenbendixen.com
> > Facebook
> > Soundcloud
> >
> >
> >
> >
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