FINALLY ! Our 16 capsule 3rd order MEMS microphone is working reliably. We will have to figure out calibration next.
Prof Angelo Farina has announced an update to X-MCFX VST plug ins : Index of /Public/X-MCFX_convolver (unipr.it)
Prof Farina writes:I am happy to announce the release of the new version 1.0.4 of X-MCFX Convolver.It is a multichannel matrix convolver, allowing to perform many useful tasks (loading WAV files containing the suitable FIR filter matrices): multichannel convolution reverb, even in MIMO mode, A-format to B-format conversion, Ambisonics encoding and decoding, SPS conversion, creation of virtual microphones and virtual loudspeakers, conversion from scene-based spatial audio and object-based spatial audio, etc…The new version 1.0.4 has improved stability and performances on 64-bits version of Windows-64 and Mac-0S, including support for the new M1 Apple Silicon processors. The number of presets for different I/O channel numbers has also been extended, including a huge 16×192 channel mode, particularly useful for massive WFS loudspeaker arrays.
At Brahma Microphones we work hard to make high quality ambisonic recording easily available to sound recordists in all kinds of environments; and to make it easier to work with multichannel recordings. Each microphone we make is crafted, calibrated, and tested with care.
Ultra-lightweight rugged design for professional field recording.
Brahma Field 4 (first order) and Brahma Field 8 (second order)
Additional circuitry for increased dynamic range in professional studio applications.
Specifications for the 14 mm capsules used in Field and Studio microphones
Sensitivity 37 dB (0 dB = 1V/Pascal)
Measured sensitivity, including electronics 20.5 mV/Pa
S/n ratio 71 dB (2nd order array will have 12 dB less noise on average)
The microphones are calibrated against an Earthworks measurement microphone, The Earthworks microphone specifies its frequency response as 3Hz to 23kHz ± 1/-3dB. Brahma microphone, after applying its calibration FilterMatrix, will match this in the range of 40 Hz to 18.5 KHz.
comparison of 14 mm and 25 capsule arrays:
simultaneous recordings of therukoothu in trissur, with 14 mm and 25 mm brahma microphones
Recordings made with Brahma 8 (both field and studio versions) can be processed with VVOctoEncode . This has been confirmed just now by David McGriffy, who helped design the process for generating the FilterMatrix for Brahma 8 (and is the author of the VV series encoders and decoders)
Second order recording from Anupu – ORTF and and Ambix formats
Why choose a Brahma microphone?
Designed by Umashankar Manthravadi. Handcrafted in Bangalore
We operate on a small scale that allows us to closely monitor quality and keep overheads down to offer you high quality, excellent sounding microphones at a competitive price. Each microphone is built with carefully matched sets of capsules, subjected to several quality tests and precisely calibrated with a set of FilterMatrix files that are unique to each microphone.
HELP GETTING STARTED
Each Brahma microphone comes with a booklet to takes you step by step into making and reproducing high quality ambisonic recordings. Our customers are using Brahma microphones for everything from Virtual Reality to music production and film soundtracks. These microphones are as versatile as your imagination.
long term product support
Our products are built to open standards and support the right to repair. After your warranty period we continue to offer low cost repairs and maintenance. Brahma microphones are built to last a long time with good care.
- No questions asked refund, minus shipping costs. If you are not delighted during the first two months after your purchase, just send the microphone back and we will refund the purchase price.
- Free repairs for one year, you only pay for shipping the microphone to us.
- After one year warranty, we still do repairs for only the cost of parts plus shipping both ways.
- Free recalibration of microphone after two years (recommended). You pay shipping. (Calibration of 3rd party microphones (including DIY) for 100 dollars a microphone plus all shipping).
Browse our products
The lifetime work of Brahma microphones founder Umashankar Mathravadi is currently being featured in a major exhibition at HKW in Berlin between now and the September 20th. If you are there check out A Slightly Curving Place; and learn more about the acoustic archeology work that inspired Uma to come up with the first portable Brahma microphone designs so he could measure hard to reach archeological locations.