AudioLoudness: Adjust the value to be closer to Scratch

adazem009 · adazem009 · commit 102c1910814f · 2024-03-11T19:11:13.000+01:00
diff --git a/src/audio/internal/audioloudness.cpp b/src/audio/internal/audioloudness.cpp
@@ -22,7 +22,7 @@ static void data_callback(ma_device *pDevice, void *pOutput, const void *pInput,
 
     for (ma_uint32 i = 0; i < frameCount; i++) {
         float value = pMicDataArray[i];
-        sum += value * value;
+        sum += std::pow(value, 2) / 20.0f; // TODO: Convert the value properly (it's different than in JS)
     }
 
     float rms = std::sqrt(sum / static_cast<float>(frameCount));

Original file line number	Diff line number	Diff line change
`@@ -22,7 +22,7 @@ static void data_callback(ma_device pDevice, void pOutput, const void *pInput,`
`22`	`22`
`23`	`23`	`for (ma_uint32 i = 0; i < frameCount; i++) {`
`24`	`24`	`float value = pMicDataArray[i];`
`25`		`- sum += value * value;`
	`25`	`+ sum += std::pow(value, 2) / 20.0f; // TODO: Convert the value properly (it's different than in JS)`
`26`	`26`	`}`
`27`	`27`
`28`	`28`	`float rms = std::sqrt(sum / static_cast<float>(frameCount));`