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<DIV><FONT face=Arial size=2>Nevermind, I think I've got it.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>10*log10(x/127)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Cheers,</FONT></DIV>
<DIV><FONT face=Arial size=2>Ross.</FONT></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=ross@stationplaylist.com href="mailto:ross@stationplaylist.com">Ross
Levis</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=delphi@ns3.123.co.nz
href="mailto:delphi@ns3.123.co.nz">NZ Borland Developers Group - Delphi
List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, June 19, 2005 12:25
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> linear audio volume to db
conversion</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>I was never any good at logarithms.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I need to convert a linear audio volume to
decibels. The values start at 0 being silence and 127 being
maximum. This needs to be translated to db starting at 0db being maximum
volume, and going negative to like -20db being a low volume. This
will be a VU meter. I'm sure I need to use the Log10 math function,
but I'm lost.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2><FONT color=#000000>Many
thanks,</FONT></FONT></DIV>
<DIV><FONT face=Arial size=2><FONT
color=#000000>Ross.</FONT></FONT></DIV></BLOCKQUOTE></BODY></HTML>