[LAU] Ambisonics microphone for Linux

Fernando Lopez-Lezcano nando at ccrma.Stanford.EDU
Thu Jun 25 21:21:22 CEST 2020

On 6/25/20 11:42 AM, Fons Adriaensen wrote:
> On Thu, Jun 25, 2020 at 11:04:14AM -0700, Fernando Lopez-Lezcano wrote:
>> Hi Fons, is this using your own calibration for both microphones?
> Hi Fernando !

Hey, good to hear from you...

> How are things over there ? I've been home-officing [2] for the
> last three months, which in practice means I'm more or less doing
> whatever I want.

Same here, home-officing as well, a few short trips to ccrma to pick up 
things or first stuff that cannot be done remotely. Not really doing 
whatever I want, though (well, a little bit :-). Been working on 
(trivial) stuff for our weekly streaming online concerts / jam sessions 
(the "Quarantine Sessions", up to #14 this coming Saturday, see ccrma's 
web site). Some SuperCollider code to "spatialize", reverberate and 
control them remotely and then feed the ambisonics 3rd order mix to a 
binaural decoder and mastering processor for the remote audience :-)

> I measured the SPS-200, and two Ambeos [1]. 

At home?? I imagine this was pre-covid?

> For the Ambeo I also
> measured the IRs of their plugin. The two measurements are almost
> identical, and they more or less (apart from some gentle EQ) match
> the plugins IRs.

Good to know. I have to re-start my measurements (curious about the 
Zoom), there is just too much to do. But as I am at home I don't know if 
it would be worth it (smaller rooms, so shorter ir's - at ccrma I was 
down to only about 200Hz already)

-- Fernando

> [1] One of my Chinese bosses (management type) insisted that we
> should investigate the combination of binaural and Ambisonics
> by putting an Ambeo close to the left and right ears of a dummy
> head. Wasted a lot of time making some recordings that way.
> Then asked him how to proceed. No answer. Then Corona arrived.
> [2] Every noun can be verbed.
> Ciao,

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