Hi Len I know Harpex is only first order, and a calibrated 2nd order mic will produce better first order patterns. I was referring to just Tetramic when I mentioned 1st order... My point about Harpex was; you tried to do ORTF with only one Octomic, and it wasn’t good. Did you try to do 3D ORTF with 2 Octomic, experimenting with positions, and which position each Harpexed Octomic synthesises? Maybe Octomics on an opposing corner with Harpex from each decoding alternately into the other corners? The two Octomics could each have the 2 straightforward decodes (to obtain 4 vertexes). But each of the other corners have 1 spaced decode from each Octomic. So the other vertexes are more deco-related from using alternate Octomic spaced Harpex decodes.
Hope that makes sense, or shoot me down with bag of crap…:) PS don’t suppose you have a super-cardioid response of the Octamic? The CCM41 capsules used in the 3D ORTF are excellent, with pretty dam good polar response upto 16k. (Obviously they wouldn’t be anyway near the same in an array being so close to each other:) https://schoeps.de/en/products/ccm/ccm-microphones/supercardioids/ccm-41.html > On 23 Oct 2020, at 03:16, moskowitz <lenmoskow...@optonline.net> wrote: > > Steven Boardman wrote: > >> Have you tried it with first order? >> I would of thought using one Harpexed octomic to synthesise all the spaced >> mics, would be a bit blurry, did you try with two? > > Harpex only operates at first-order. > > We used OctoMic's first-order B-format as input to Harpex. > > We've used two OctoMics for ORTF. Since OctoMic's cardioid patterns are so > stable and consistent, and because pointing angles can be fine-tuned in post, > two OctoMics make probably the world's finest ORTF array. > > > Len Moskowitz (mosko...@panix.com) > Core Sound LLC > www.core-sound.com > Home of OctoMic and TetraMic > _______________________________________________ > 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.
