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Wigware Ambisonic Decoder (WAD)
Wigware Ambisonic Decoder (WAD) This program now comes in two flavours, as a Direct Show filter and a VST plugin. The Direct Show Filter allows any Direct Show capable audio player software (such as Windows Media Player) the ability to read and decode B-format wave files (the format of which is specified here on Richard Dobson’s web page – details on the Waveformat extensible file format used…
rg.ambi~ B=Format Soundfield Manipulations
rg.ambi~ patches now account for b-format soundfield manipulations: rotate, tilt, tumble, and rotilt.
Download: http://rickygraham.net/puredata/rg.ambi~.zip
Read more: http://www.york.ac.uk/inst/mustech/3d_audio/ambis2.htm
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Expochirp used to check acoustic performance of ReS (Resonant String Shell)
As anticipated in previous posts, Expochirp has been used to measure the acoustic performance of ReS during villapennisinmusica festival (http://villapennisinmusica.wordpress.com/) in 2012 and 2013.
The design of the structure is part of a research project in collaboration with CMMKM Architects (http://www.cmmkm.com/) where my role is to look after the acoustic design.
I have used Expochirp to measure Impulse Responses (omnidirectional mic and A-Format Mic) in order to evaluate ISO3382 parameters and judge the acoustic quality.
As you can see from the picture below, the structure is in a courtyard on the backside of one of the major building in the town of Acireale (Sicily, Italy), with the building itself being on the right side of the audience and the shell on one end of the courtyard.
Over the 2 years the research project has been conducted, the acoustic hell has changed shapes many times, in order to optimize the acoustic response for the audience and the musicians, reaching the two final forms shown below.
ReS 2012
ReS 2013
In the next post there will be more detailed results.
Velan ambisonic microphone
This paper describes an ambisonic microphone and b-format encoding software. The mic is Umashankar Mantravadi’s six capsule “velan” design. The construction process, directivity, callibration and results of listening and directivity tests are discussed as well as any technical issues that arose .
Download paper here :
http://www.pdfhost.net/index.php?Action=Download&File=6d875ce2a4a6c311e11000afd6d0e758
I will use it to take multichannel field recordings in the Amazon probably with a Tascam DR 680
