spectrum level to RMS

["Merri J. Rosen" <mrosen@xxxxxxxxxxx>]

Hello all,

I'm looking for a particular formula related to calibration.  Noise amplitudes are often reported in spectrum level (aka equivalent SPL), i.e., the sound intensity in a 1kHz band, often reported as dB/Hz.  I am calibrating my noise by directly measuring its RMS (in pascals), and calculating dB SPL from there.  I would like a formula that converts spectrum level (dB/Hz) to RMS (assuming you know the bandwidth of the noise), in order to be able to relate spectrum level to my calculated dB SPL.  Any suggestions are appreciated.

thanks,
Merri


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  Merri J. Rosen, Ph.D.
  Assistant Professor, Department of Anatomy & Neurobiology
   NEOMED (Northeast Ohio Medical University)
   mrosen@xxxxxxxxxxx
   http://www.neoucom.edu/audience/about/departments/anatneuro/faculty/rosen
   Office: 330/325-6516     Lab: 330/325-6633
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