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dB calculations
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<blockquote data-quote="Mark DeArman" data-source="post: 137844" data-attributes="member: 950"><p>Re: dB calculations</p><p></p><p>The relevant equation from the previously attached PDF:</p><p></p><p> for two sources is p_t^2 = p1^2 + p2^2 + 2*p1*p2*cos(ph1-ph2)</p><p></p><p>add more sources and the polynomial gets bigger, plug in all a=b=c=1 into:</p><p>(a+b+c)^2 = a^2 + 2 a b + b^2 + 2 a c + 2 b c + c^2</p><p></p><p>only in the ideal case of course, assuming everything sums in phase, which it never will in any bandwidth.</p></blockquote><p></p>
[QUOTE="Mark DeArman, post: 137844, member: 950"] Re: dB calculations The relevant equation from the previously attached PDF: for two sources is p_t^2 = p1^2 + p2^2 + 2*p1*p2*cos(ph1-ph2) add more sources and the polynomial gets bigger, plug in all a=b=c=1 into: (a+b+c)^2 = a^2 + 2 a b + b^2 + 2 a c + 2 b c + c^2 only in the ideal case of course, assuming everything sums in phase, which it never will in any bandwidth. [/QUOTE]
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