Hi Len

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?

Steve



On Wed, 21 Oct 2020, 17:12 moskowitz, <lenmoskow...@optonline.net> wrote:

>
> Only four Core Sound OctoMic second-order microphones are needed replace
> the 12 mono microphones used in full sphere ORTF-3D, with better polar
> patterns and true ORTF angles & spacings for all pairs of mics.
>
> You'd need 32 recording channels. That can be done at reasonable cost with
> a Midas 32C/DL32 setup (for under $3000), four Zoom F8ns, or for higher
> cost with two Sound Devices Scorpios.
>
> We tried using Harpex to do ORTF with a single OctoMic. Unfortunately, its
> plane wave decomposition process for translating ambisonic soundfields in
> space results in relatively weak  location cues.
>
>
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