| Subject: | Re: The Brinibox |
|---|---|
| From: | "Avocet" madl74 |
| Date: | Sun Apr 29, 2012 11:09 am ((PDT)) |
> crown published some kind of a booklet on pzm applications, which > included many possible arrangements with multiple boundaries. the > basic theory is one boundary (flat on a plate) gives six db of gain. > two boundaries (with the capsule at the join) 12 db, and three > boundaries (with the capsule at the corner) would give 18 db. AArrgh!. Maybe that is where I saw this booboo, but you can't add decibels like that! Also that explanation does not take into account the cosine effect when longitudinal sound meets a reflector at an angle. It is in my article. David David Brinicombe North Devon, UK Cogito cogito ergo cogito sum - Ambrose Bierce |
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