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7 Cards in this Set
- Front
- Back
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Velocity Propagation In a gas medium |
s=sqrt(yPo/po) Po=N/m^2 Po=kg/m^3 Y=ratio of heat |
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Velocity of Propagation in normal dry air |
S=331.45+0602Tc for equal or less than 20C S=331.45*sqrt(Tk/273) |
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Loudness |
Phon=40+10log2Sone |
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Frequency Parameters |
Nth Harmonics = n*Ff Nth Overtone = (n+1)*Ff Nth Octave = 2^n *Ff Nth Decade = 10^n *Ff |
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Sound Power Level General Solution |
PWL(dB)=10log(W/Wo) or PWL(dB)=10logW+120dB
W=acoustic power Wo=10^-12 |
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Sound Power Level for multiple sources but different PWL |
PWL(total)=10log(Wtotal/Wo) Wtotal=W1+W2.. Wo=10^-12W |
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Sound Power Level for Multiple Sources |
PWL(total)=PWL+10logn Wtotal=nWn |
