document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=23372>Question 23372</A>: <I><SPAN STYLE=\"word-break: break-all;\"> My assignment was to figure out the formula for measuring sound, and to pick a specific sound, and give the decibels of the sound and explain what this measurement means.  I don't even know how to begin.\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #12183 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=12183\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use your Google search to look at \"Sound frequency decibel\"<BR>\n" );
document.write( "separately or in combination.<BR>\n" );
document.write( "Human sound is between 20hz and 20khz.<BR>\n" );
document.write( "For example, for a frequency of 45hz the sound wave formula is <BR>\n" );
document.write( "y = sin [(2pi/45)x].<BR>\n" );
document.write( "Intensity of sound expressed in dB = 10log [(sound intensity/threshold ]intensity). The threshold is a certain level of intensity that physicists<BR>\n" );
document.write( "use as a measuring unit to determine the dB measurement of a sound they<BR>\n" );
document.write( "are studying.<BR>\n" );
document.write( "For example a Rock Concert has been measured as having a dB level between<BR>\n" );
document.write( "102 and 106 dB<BR>\n" );
document.write( "Put that 102 into the formula and you get the following:<BR>\n" );
document.write( " 102dB =10log[Intensity/threshold]<BR>\n" );
document.write( "10^101 = Intensity/ threshold<BR>\n" );
document.write( "Sound intensity of the concert is (10^101)*(threshold intensity)<BR>\n" );
document.write( "That is LOUD.\r<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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