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Re: dB SPL to dBA

At 04:56 PM 5/20/98 +0200, Patrick Susini wrote:
>An approximation can be obtained for dBA as follow
>function [y] = pondBA(n,fs)
>%FUNCTION [y] = pondBA(n,fs)
>%Calcul la ponderation dB(A) en dB
>%n : nombre de points (c-a-d la resolution frequentielle)
>%fs : frequence d'echantillonnage
>y = -184.786441+160.661125*x.1-55.73236*x.2+10.073034*x.3-0.834527*
>x.4;%en dB
For the benefit of those on the list whose French is rusty, here is a
translation of the header:

%FUNCTION [y] = pondBA(n,fs)
%Computation of dB(A) weights in dB
%n : number of points (i.e., frequency resolution points)
%fs : sampling frequency

By the way, Patrick, what is the source of your algorithm (i.e., who came
up with it)?


Pierre Divenyi             Experimental Audiology Research (151)
                           V.A. Medical Center, Martinez, CA 94553, USA
Phone: (510) 370-6745;     Fax: (510) 228-5738
E-mail :                   PDivenyi@ucdavis.edu