[NSRCA-discussion] Sound measurement

[ehaury]

Jon

The spec is dbA so - A scale. Typically use "Fast" unless reading is varying 3db or so (unlikely), then use slow.

Earl

Sent from my iPhone

On Jul 20, 2011, at 8:53 AM, Jon Lowe <jonlowe at aol.com> wrote:

> Does anyone know where the requirements for the settings on the dB meter are in the Competition regulations?  The regs are very specific as to the placement of the sound meter to the aircraft, distances, etc, but I can't find the requirements for the use of "A" or "C" weighting, or "Fast" or Slow" response.  I think we are supposed to use "A" weighting, and Slow response, but I'm not sure.  
> 
> Jon
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