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ENH: noiseModel gainX - protect against very small input frequencies

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This commit is contained in:
Andrew Heather
2021-02-15 12:51:35 +00:00
parent ae8ccd7b94
commit a334aaae78
1 changed files with 20 additions and 0 deletions
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20
src/randomProcesses/noise/noiseModels/noiseModel/noiseModel.C
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@ -434,6 +434,11 @@ Foam::scalar Foam::noiseModel::RAf(const scalar f) const
Foam::scalar Foam::noiseModel::gainA(const scalar f) const Foam::scalar Foam::noiseModel::gainA(const scalar f) const
{ {
if (f < SMALL)
{
return 0;
}
return 20*log10(RAf(f)) - 20*log10(RAf(1000)); return 20*log10(RAf(f)) - 20*log10(RAf(1000));
} }
@ -456,6 +461,11 @@ Foam::scalar Foam::noiseModel::RBf(const scalar f) const
Foam::scalar Foam::noiseModel::gainB(const scalar f) const Foam::scalar Foam::noiseModel::gainB(const scalar f) const
{ {
if (f < SMALL)
{
return 0;
}
return 20*log10(RBf(f)) - 20*log10(RBf(1000)); return 20*log10(RBf(f)) - 20*log10(RBf(1000));
} }
@ -473,6 +483,11 @@ Foam::scalar Foam::noiseModel::RCf(const scalar f) const
Foam::scalar Foam::noiseModel::gainC(const scalar f) const Foam::scalar Foam::noiseModel::gainC(const scalar f) const
{ {
if (f < SMALL)
{
return 0;
}
return 20*log10(RCf(f)) - 20*log10(RCf(1000)); return 20*log10(RCf(f)) - 20*log10(RCf(1000));
} }
@ -492,6 +507,11 @@ Foam::scalar Foam::noiseModel::RDf(const scalar f) const
Foam::scalar Foam::noiseModel::gainD(const scalar f) const Foam::scalar Foam::noiseModel::gainD(const scalar f) const
{ {
if (f < SMALL)
{
return 0;
}
return 20*log10(RDf(f)); return 20*log10(RDf(f));
} }