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Code Issues Releases Wiki Activity

Bug1320: Correct contrast window miscalculations of RMS

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This commit is contained in:
Paul Licameli
2016-01-29 14:18:47 -05:00
parent 3c2e88a6dc
commit eaccd490ec
1 changed files with 5 additions and 2 deletions
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7
src/Sequence.cpp
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@@ -364,8 +364,8 @@ bool Sequence::GetRMS(sampleCount start, sampleCount len,
float blockMin, blockMax, blockRMS;
mBlock->Item(b)->f->GetMinMax(&blockMin, &blockMax, &blockRMS);
sumsq += blockRMS * blockRMS * mBlock->Item(block0)->f->GetLength();
length += mBlock->Item(block0)->f->GetLength();
sumsq += blockRMS * blockRMS * mBlock->Item(b)->f->GetLength();
length += mBlock->Item(b)->f->GetLength();
}
// Now we take the first and last blocks into account, noting that the
@@ -394,6 +394,9 @@ bool Sequence::GetRMS(sampleCount start, sampleCount len,
length += l0;
}
// PRL: catch bugs like 1320:
wxASSERT(length == len);
*outRMS = sqrt(sumsq/length);
return true;