15th November 2015

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**1****Polar chart visualization for coincident techniques**

For the longest time I had a hard time visualizing what the pickup patterns of MS stereo rigs, or of XY rigs reduced to mono, would look like. I developed a spreadsheet that allows you to simulate any coincident mic technique and see what the sum and difference results are.

When I first made this spreadsheet, some of the results surprised me and I was afraid that some of the math might be wrong. Thanks to some excellent supplemental reading (courtesy of John Willett) I've seen confirmation for many of these combinations now, and I'm fairly sure that it's all working properly.

So, for anyone who's interested in visualizing MS matrix results or mono sums from XY pairs, check out the attached spreadsheet and see what you think!

P.S. There's a more fluid and intuitive stereo mic technique visualization online at Visualization of Microphone System XY cardioid 120° Intensity stereo - Recording angle Level difference Microphone degrees visualization visualizator - sengpielaudio Sengpiel Berlin

I think it's safe to say that the sengpiel link is much nicer than my spreadsheet, except for the lack of mono and MS matrix functions. On the other hand, their system shows good info on spaced pairs, which my spreadsheet can't handle at all.

When I first made this spreadsheet, some of the results surprised me and I was afraid that some of the math might be wrong. Thanks to some excellent supplemental reading (courtesy of John Willett) I've seen confirmation for many of these combinations now, and I'm fairly sure that it's all working properly.

So, for anyone who's interested in visualizing MS matrix results or mono sums from XY pairs, check out the attached spreadsheet and see what you think!

P.S. There's a more fluid and intuitive stereo mic technique visualization online at Visualization of Microphone System XY cardioid 120° Intensity stereo - Recording angle Level difference Microphone degrees visualization visualizator - sengpielaudio Sengpiel Berlin

I think it's safe to say that the sengpiel link is much nicer than my spreadsheet, except for the lack of mono and MS matrix functions. On the other hand, their system shows good info on spaced pairs, which my spreadsheet can't handle at all.

polar_7.xls (560.5 KB, 220 views)