Dear marc

I have seen the website and it is very nice. I had not responded earlier 
because I am in the process of settling into a retired life, in a south indian 
city Bangalore. Very pleasant weather, and I own a small and convenient flat in 
the middle of the older Bangalore.

I want to send you a small ambisonics file of a sarus crane calling and I will 
when you tell me how.

Has anything come of brahma with eric Benjamin and co ?

One copy of Brahma (standalone) is now with Richard Lee in Australia. He has 
made some suggestions to improve the quality of the microphone it is quite 
simple to do and Nakul will implement and measure a microphone with it. 
Basically it involves expanding the four holes in the tetrahedral array. They 
are three sided and they can be expanded with an 8 mm drill very carefully ( I 
do it by hand). There a sharp peak at about 3.5 k. it is flattened by the 
calibration system, but richard thinks it would be a far better microphone if 
the peak is reduced before calibration. This will apply to both the standalone 
microphone and Brahma in Zoom. If you want to do it, it will need recalibration 
after the surgery. I post you a photo of what needs to be done. 

Sold quite a few mics recently. Oculus guys are buying a few.

umashankar
Sent from Mail for Windows 10



From: Marc Lavallée
Sent: Sunday, August 23, 2015 8:29 PM
To: Surround Sound discussion group
Subject: [Sursound] A new home for Ambisonia


Dear sursounders.

TL;DR
There a new Ambisonia.com.
It's a static version, without login.
I can add new contributions manually.

Here are the details:

The Ambisonia.com collaborative web site was just retired from
University of York, where it was hosted for a bit more than 3 years,
thanks to the joint efforts of Etienne Deleflie who accepted my request
to put Ambisonia back online, Dave Malham who accepted to host the web
site at York, and Oliver Larkin who setup and maintained a server to
connect the hard drive sent by Etienne.

At the time, my original plan was to fix the resurrected site, and
migrate it to add new features. I did fix the torrent download system,
but I did not add new features; the main reason was that the Plone
content management system used to build and run Ambisonia was obsolete,
and I was unable to migrate it to a newer version. Recurring problems
made it necessary to disconnect the wiki, later followed by the
registration system, then the database started to show signs of
corruption. Ambisonia needed a new home...

So I exported all relational data to JSON files, and built a static
version as a starting point, without a content management system, minus
the wiki. In the process, I discovered the rich collection of
contributions, and I decided to put an emphasis on the content. I hope
that you will appreciate the new fluid layout, the overall simplicity,
and the direct download links (!!). But please don't mirror the web
site to create a personal archive; the total size is 36GB and the
monthly allowed bandwidth is 600.00 GB. If the bandwidth requirement
exceeds this limit, I may ask for help ($$).

Most of the urls were kept as in the original web site, to avoid broken
urls on other web sites. Ambisonic contributions are still geolocalized
(if the location was provided), but I favoured OpenStreetMap over
GooleMaps. The images provided and the copyright info are easier to see.

Although I could stop developing Ambisonia and leave it as an archive,
I'd like it to be a starting point for the next version of Ambisonia,
still as a collaborative web site, to respect the original intent.
Here's the agenda, opened for (private) discussion:
- Add a preview player (the one I developed on http://ambisonic.xyz)
- Add a download mirroring system (so bandwidth could be shared).
- Choose a new framework to build a new dynamic web site,
  in order to reactivate collaborative mechanisms.

Some people asked me how they can contribute new content. I can accept
new content, but I'd have to publish it "manually". That's fine for now,
because it could help me find a simple contribution mechanism that would
not require the entire site to be dynamic, hence reducing complexity
and risks of system corruption.

Ok, I better stop now...

--
Marc 
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