diff --git a/.vscode/c_cpp_properties.json b/.vscode/c_cpp_properties.json
new file mode 100644
index 0000000..0211f69
--- /dev/null
+++ b/.vscode/c_cpp_properties.json
@@ -0,0 +1,22 @@
+{
+    "configurations": [
+        {
+            "name": "Win32",
+            "includePath": [
+                "${workspaceFolder}/**",
+                "C:\\lua\\*"
+            ],
+            "defines": [
+                "_DEBUG",
+                "UNICODE",
+                "_UNICODE"
+            ],
+            "windowsSdkVersion": "10.0.26100.0",
+            "compilerPath": "cl.exe",
+            "cStandard": "c17",
+            "cppStandard": "c++17",
+            "intelliSenseMode": "windows-msvc-x64"
+        }
+    ],
+    "version": 4
+}
\ No newline at end of file
diff --git a/filter/bs412.c b/filter/bs412.c
index 5fe378e..9e34ade 100644
--- a/filter/bs412.c
+++ b/filter/bs412.c
@@ -8,7 +8,7 @@ inline float dbr_to_deviation(float dbr) {
 
 inline float deviation_to_dbr(float deviation) {
 	if (deviation < 1e-6f) return -100.0f;
-	return 10.0f * (log2f(deviation) - LOG2_19000) * 0.30103f;
+	return 10*log10f(deviation/19000);
 }
 
 void init_bs412(BS412Compressor* mpx, uint32_t mpx_deviation, float target_power, float attack, float release, float max, uint32_t sample_rate) {