indeed. apologies, it is 90 degrees.

On 23 April 2018 at 18:31, Bo-Erik Sandholm <bosses...@gmail.com> wrote:

> As I see it to capture the signals for the upper layers of octomic with a
> tetra mic you rotate the mic 90 degrees between the takes..
> To capture the lower octomic  elements layer go back to initial position,
> then rotate Tetra mic 45 degrees and then 90 degrees for 2  recordings.
>
> So 4 rotation direction to place the tetra mic elements in same positions
> as the 8 Octomic capsules.
>
> select the 8 A signals that corresponds to the octomic positions...
>
> Then get our hands on the octomic software if possible and hopefully
> translate the tetramic calibration file in to a octomic calibration file,
> might be possible.
>
> This has only a chance to work for IR measurements and if the rotation of
> the tetramic is done without moving the center point of the mic head.
>
> I hope this is possible, it should be a great new use of a tetramic to be
> able with a little work to create second order room Impulse responses.
>
>  Bo-Erik
>
> 2018-04-23 19:10 GMT+02:00 Fernando Lopez-Lezcano <
> na...@ccrma.stanford.edu>
> :
>
> > On 04/23/2018 04:24 AM, jack reynolds wrote:
> >
> >> The new coresound octomic is based on two tetramics, with one rotated 45
> >> degrees from the other,
> >>
> >
> > Hmm, does not look like that to me. If you, for example, take any two
> > opposite capsules in the upper ring as part of one tetrahedral
> microphone,
> > there are no capsules in the lower ring that would match the lower half
> of
> > that microphone (they are rotated 45 degrees from where they should be).
> >
> > -- Fernando
> >
> >
> > so if you could work out how the second order
> >> B-format is extracted from the octomic array, you could potentially take
> >> an
> >> A-format reponse with your tetramic, rotate the mic 45 degrees and
> capture
> >> another, then process all eight channels?
> >> Just a thought.
> >>
> >> Jack
> >>
> >> On 23 April 2018 at 11:51, Bo-Erik Sandholm <bosses...@gmail.com>
> wrote:
> >>
> >> Have never used Max, I need just 2, but probably 4 sound source
> positions
> >>> and one listening position.
> >>> But the listening position should have full spherical  ambisonic
> >>> soundfield.
> >>> But the result should be ambisonic IR's for these 4 sources.
> >>>
> >>> The question is could upsampling be used ?
> >>>
> >>> BR Bo-Erik
> >>>
> >>>
> >>>
> >>> 2018-04-23 10:47 GMT+02:00 Hyunkook Lee <h....@hud.ac.uk>:
> >>>
> >>> Indeed HIRT is the best IR capture package for Max.  There is also
> HAART,
> >>>> which is a standalone Max application we developed using HIRT. This
> >>>> software is all in one box for multichannel IR capture (24 mics x 24
> >>>> sources), acoustic parameter analysis and binauralisation. The
> analysis
> >>>> part is still under development, but the IR capture and
> binauralisation
> >>>> parts are fully working. You can download it here
> >>>>
> >>>> http://eprints.hud.ac.uk/id/eprint/24579/
> >>>>
> >>>> Also as Pierre mentioned, we captured over 2000 IRs of 39 multichannel
> >>>>
> >>> mic
> >>>
> >>>> array configurations from stereo to 9ch 3D using HAART. The library
> >>>> comes
> >>>> with a Max renderer where you can convolve dry sources or signals fed
> >>>>
> >>> from
> >>>
> >>>> DAW with the mic array IRs for simultaneous comparisons between
> >>>>
> >>> techniques.
> >>>
> >>>>
> >>>> https://github.com/APL-Huddersfield/MAIR-Library-and-Renderer
> >>>>
> >>>> Best,
> >>>> Hyunkook
> >>>> =========================================
> >>>> Dr Hyunkook Lee, BMus(Tonmeister), PhD, MAES, FHEA
> >>>> Senior Lecturer in Music Technology
> >>>> Leader of the Applied Psychoacoustics Laboratory (APL)
> >>>> http://www.hud.ac.uk/apl
> >>>> http://www.hyunkooklee.com
> >>>> Phone: +44 (0)1484 471893
> >>>> Email: h....@hud.ac.uk
> >>>> Office: CE 2 /14a
> >>>> School of Computing and Engineering
> >>>> University of Huddersfield
> >>>> Huddersfield
> >>>> HD1 3DH
> >>>> United Kingdom
> >>>>
> >>>> ________________________________________
> >>>> From: Sursound [sursound-boun...@music.vt.edu] on behalf of Pierre
> >>>> Alexandre Tremblay [tremb...@gmail.com]
> >>>> Sent: 23 April 2018 09:29
> >>>> To: Surround Sound discussion group
> >>>> Subject: Re: [Sursound] RIR measuring, how to capture a higher order
> >>>> Ambisonic room responce?
> >>>>
> >>>> If you use Max, try the very versatile HIRT.
> >>>>
> >>>> 2nd order with a tetramic is not possible as far as I am aware
> through…
> >>>>
> >>> we
> >>>
> >>>> have done (mega)multimic IRs (24 channels of inputs, of which a 1st
> >>>> order
> >>>> ambisonic) of 3 different spaces with our kit, and it was fun and
> >>>> productive to train the ear on difference of multichannel mic
> techniques
> >>>> (Hyunkook Lee has a cool setup and papers on them, and I was mostly
> >>>> interested in DPA LCR omni vs coincident vs MS)
> >>>>
> >>>> We did many stage positions too. I can investigate if I can share the
> >>>> files if that interests anyone.
> >>>>
> >>>> p
> >>>>
> >>>>
> >>>> On 23 Apr 2018, at 08:37, Bo-Erik Sandholm <bosses...@gmail.com>
> >>>>>
> >>>> wrote:
> >>>
> >>>>
> >>>>> I want to measure the RIR of a medium size good listening room at
> least
> >>>>>
> >>>> up
> >>>>
> >>>>> to second order Ambisonic RIR.
> >>>>>
> >>>>> The IR result is to incorporate the responce and reflections of the
> >>>>> speakers and their positions.
> >>>>>
> >>>>> I have a tetramic.
> >>>>>
> >>>>> Can several measurements and rotation of the tetra mic between them
> be
> >>>>> combined to create the measurements that comes closer to a second
> order
> >>>>>
> >>>> mic?
> >>>>
> >>>>>
> >>>>> I know the basics of using Audacity, and a audio sweep and creating a
> >>>>>
> >>>> IR
> >>>
> >>>> from this.
> >>>>>
> >>>>>
> >>>>>
> >>>>> Bo-Erik Sandholm
> >>>>> Stockholm
> >>>>> -------------- next part --------------
> >>>>> An HTML attachment was scrubbed...
> >>>>> URL: <https://mail.music.vt.edu/mailman/private/sursound/
> >>>>>
> >>>> attachments/20180423/ee496094/attachment.html>
> >>>>
> >>>>> _______________________________________________
> >>>>> Sursound mailing list
> >>>>> Sursound@music.vt.edu
> >>>>> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe
> >>>>>
> >>>> here,
> >>>
> >>>> edit account or options, view archives and so on.
> >>>>
> >>>> _______________________________________________
> >>>> Sursound mailing list
> >>>> Sursound@music.vt.edu
> >>>> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe
> here,
> >>>> edit account or options, view archives and so on.
> >>>> University of Huddersfield inspiring tomorrow's professionals.
> >>>> [http://marketing.hud.ac.uk/_HOSTED/EmailSig2014/EmailSigFooter.jpg]
> >>>>
> >>>> This transmission is confidential and may be legally privileged. If
> you
> >>>> receive it in error, please notify us immediately by e-mail and remove
> >>>> it
> >>>> from your system. If the content of this e-mail does not relate to the
> >>>> business of the University of Huddersfield, then we do not endorse it
> >>>> and
> >>>> will accept no liability.
> >>>> _______________________________________________
> >>>> Sursound mailing list
> >>>> Sursound@music.vt.edu
> >>>> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe
> here,
> >>>> edit account or options, view archives and so on.
> >>>>
> >>>> -------------- next part --------------
> >>> An HTML attachment was scrubbed...
> >>> URL: <https://mail.music.vt.edu/mailman/private/sursound/
> >>> attachments/20180423/3de17520/attachment.html>
> >>> _______________________________________________
> >>> Sursound mailing list
> >>> Sursound@music.vt.edu
> >>> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe
> here,
> >>> edit account or options, view archives and so on.
> >>>
> >>>
> >>
> >>
> >>
> > _______________________________________________
> > Sursound mailing list
> > Sursound@music.vt.edu
> > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
> > edit account or options, view archives and so on.
> >
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <https://mail.music.vt.edu/mailman/private/sursound/
> attachments/20180423/d3bf30df/attachment.html>
> _______________________________________________
> Sursound mailing list
> Sursound@music.vt.edu
> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
> edit account or options, view archives and so on.
>



-- 

07889727365

02036861372

3 Swimmers Lane
Haggerston
London
E2 8FR


www.facebook.com/reynoldsmicrophones

www.sohovr.co.uk
-------------- next part --------------
An HTML attachment was scrubbed...
URL: 
<https://mail.music.vt.edu/mailman/private/sursound/attachments/20180423/6fa31460/attachment.html>
_______________________________________________
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit 
account or options, view archives and so on.

Reply via email to