how to use matlab to convert some value into dB and vise versa

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Amina El Banna
Amina El Banna 2014-4-28
评论： Sunil Kumar Yadav 2014-4-28
if A = 10*log10(K)for example how to perform the following on MATLAB K = inverse log(A/10)

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回答（2 个）

Mischa Kim
Mischa Kim 2014-4-28
Amina, use
K = 10^(A/10)
Sunil Kumar Yadav
Sunil Kumar Yadav 2014-4-28
Amina use --->log10 command
Common (base 10) logarithm
so your expression become
A = 10*log10(K)
  1 个评论
Sunil Kumar Yadav
Sunil Kumar Yadav 2014-4-28
use "log" for natural log and "log10" for log to the base 10 .Taking antilog of natural log use "exp(value)" and for antilog of base to 10 use 10.^value
log(2)
ans = 0.6931
exp(ans)
ans = 2
log10(pi)
ans = 0.4971
10.^ans
ans = 3.1416

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