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<DIV><FONT face="Comic Sans MS" size=2>Dear All,</FONT></DIV>
<DIV><FONT face="Comic Sans MS" size=2></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" size=2>I have written a small test
application to calculate Average RMS and max RMS power of </FONT></DIV>
<DIV><FONT face="Comic Sans MS" size=2>a wave file. Wave file audio
data having 16 bit sample and mono.</FONT></DIV>
<DIV><FONT face="Comic Sans MS" size=2>i'm using the following algorithm
:</FONT></DIV>
<DIV><FONT face="Comic Sans MS" size=2>
i=N-1</FONT></DIV>
<DIV><FONT face="Comic Sans MS" size=2>rms = sqrt(1/N <FONT size=3>∑ <FONT
size=2>sample[i] * sample[i]</FONT> </FONT>)</FONT></DIV>
<DIV><FONT face="Comic Sans MS" size=2>
i=0</FONT></DIV>
<DIV><FONT face="Comic Sans MS" size=2></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" size=2>AvgRMS = 20.0 * log10 ( rms /2^N-1);//
for RMS power in dB.</FONT></DIV>
<DIV><FONT face="Comic Sans MS" size=2></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" size=2>When i compared the AvgRMS value with
adobe audition, it matches with Total RMS </FONT></DIV>
<DIV><FONT face="Comic Sans MS" size=2>power instead of Average RMS power but i
want to calculate Avg RMS power.</FONT></DIV>
<DIV><FONT face="Comic Sans MS" size=2></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" size=2>Can you advise me where I'm wrong to
calculate Average RMS power in dB.</FONT></DIV>
<DIV><FONT face="Comic Sans MS" size=2></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" size=2>Thanks in advance.</FONT></DIV>
<DIV><FONT face="Comic Sans MS" size=2>Best Regards</FONT></DIV>
<DIV><FONT face="Comic Sans MS" size=2>chandrashekhar</FONT></DIV></BODY></HTML>