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# System prepended metadata

title: Ambisonic Field Microphones

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# Ambisonic Field Microphones
### Manufacturing process doc
#### Brahma Ambisonic Microphone

The Brahma Ambisonic Microphone is a high quality electret based, phase accurate sound field microphone developed by Umashankhar Manthravadi that can capture a true 3 dimensional representation of an acoustical ambience. Umashankar Manthravadi is a self-taught acoustic archaeologist, sound technician, sound recordist, journalist and poet.

#
*Meeting with Mr. John Mathews*

Awaiting revised quote from fabricators for the steel casing. 
Current status: Minimal order of 10 pieces for ₹2500 each. Remaining 40 pieces @₹2000 each.*
**Subject to change*
#
*Phone call with Mr. Umashankhar Matravedi*

Brief introductions. Set up a meeting on Friday to conduct further discussions about the capsules, arrays and other technicalities. He wanted to get some of the samples back from Mr. John for personal use. Mr. John has agreed to meet me on Friday with the samples to be taken to Mr. Umashankhar.
#
*Meeting with Mr. Umashankhar*

Discussed the *1st*, *2nd*, and *3rd* order ambisonic mics. Still awaiting confirmation from Mr. John about the fabrication bit. Meanwhile, I am helping Mr. Umashankhar build the case for the *3rd* order microphone. ![](https://hackmd.io/_uploads/SJt0eCzu3.jpg)
![](https://hackmd.io/_uploads/rJYRlAMuh.jpg)
![](https://hackmd.io/_uploads/SkK0lRz_n.jpg)

