Thanks for the reminder. I had indeed forgotten that you now offer the
service.
Gerard
On 10/03/2018 02:02, umashankar manthravadi wrote:
If you had seen my website (brahmamic.com) recently, you will notice
that I have been offering to calibrate third party microphones
including diy microphones. I also recalibrate brahmas more than two
years old.
umashankar
Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for
Windows 10
------------------------------------------------------------------------
*From:* Sursound <sursound-boun...@music.vt.edu> on behalf of Gerard
Lardner <glard...@iol.ie>
*Sent:* Saturday, March 10, 2018 3:58:52 AM
*To:* sursound@music.vt.edu
*Subject:* Re: [Sursound] [allowed] oktava 1st order mic
My attempts to respond last night from my phone didn't work. Try again:
I have an older Oktava MK_012 4D. I bought it relatively cheaply on eBay
a few years ago; it came without any software or digital calibration
data; I think Oktava don't offer anything more than paper frequency
response traces for each capsule. I think it has a larger capsule array
size than the MK-4012; in the MK-012 4D, the capsules lie on a sphere of
about 96 mm diameter.
Fons Adriaensen kindly calibrated my Oktava MK_012 4D for me.
Calibration made a big difference; without calibration, directional cues
were almost non-existant. But the same recordings, reprocessed with the
calibration files, had directional cues, at least at mid- and lower
frequencies. Fons, and Angelo Farina, explained that the mic could not
resolve directional information at higher frequencies due to the large
array size. I think the capsules on my Oktava are not very well matched
(it is maybe 20 years old), and it really needed the calibration.
I love the quality of the sound captured by the Oktava, especially for
classical chamber music and choral music but, to be honest, I use a
Brahma more often, because of its much better directionality.
My recommendation is, if you have an Oktava MK-4012, get it calibrated.
In my case, it made a big difference.
Fons Adriaensen in Italy calibrated my Oktava. I believe Richard Lee in
Australia might still offer a calibration service, though he appears to
be less active on the internet these days, and I think Core Sound in the
USA also will do it - they used to say it on their website, but I
haven't checked lately.
Gerard Lardner
On 08/03/2018 18:51, Peter P. wrote:
> Hi list, please excuse if this has already been discussed here before,
> the archive didn't show much results for me. What is the best way to
> encode the signal from the Oktava MK4012 1st order microphone capsules
> into ambisonics? Did anyone measure the mic so far or is a generic
> encoder the best way to do it for now? It seems that Oktava is not
> providing any hardware/software encoders... Thank you for any ideas!
> Peter
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