Compare Two Channels for Transmission Loss Evaluation |
Posted: Tue Nov 27, 2007 5:00 pm |
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Gerry Pehl |
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Joined: 26 Nov 2007 |
Posts: 1 |
Location: Twin Cities, Minnesota, USA |
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| Hello EASERA Users,
As I was looking at the manual I came across the the measurement set up for comparing two channels for transmission loss evaluation on page 36.
I thought that was ridiculously cool, I've looking for that feature for years!
The icon even depicts a wall between the mics- awesome!
So can anyone offer any thoughts or point me to some resources on the proper way to do it in the field? A discussion on the SAC list brought up the point that no matter where the in room reference mic is it's in the pressure zones of some frequencies, and varying based on how proximity to which boundaries. And the distance required to be in the far field, outside of a building, for example would often be prohibitively far.
Practically speaking I thought I'd set up an experiment and just see what happens at various mic locations, but I wonder if there's an accepted way of doing this- can the magnitude and phase of the frequencies of the pressure zones be calculated or measured and reference out, for example?
Thanks for any thoughts on the matter!
Take Care,
Gerry |
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