diff --git a/libavcodec/dcadata.h b/libavcodec/dcadata.h
index 90a46aaf65..6458ea174f 100644
--- a/libavcodec/dcadata.h
+++ b/libavcodec/dcadata.h
@@ -7552,16 +7552,16 @@ static const float dca_dmixtable[241] = {
 };
 
 static const float dca_default_coeffs[10][5][2] = {
-    { { 0.707946, 0.707946 },                                                                                                 }, // A
+    { { 0.707107, 0.707107 },                                                                                                 }, // A
     { { 1.000000, 0.000000 }, { 0.000000, 1.000000 },                                                                         }, // A + B (dual mono)
     { { 1.000000, 0.000000 }, { 0.000000, 1.000000 },                                                                         }, // L + R (stereo)
     { { 1.000000, 0.000000 }, { 0.000000, 1.000000 },                                                                         }, // (L+R) + (L-R) (sum-difference)
     { { 1.000000, 0.000000 }, { 0.000000, 1.000000 },                                                                         }, // LT + RT (left and right total)
-    { { 0.865964, 0.865964 }, { 1.000000, 0.501187 }, { 0.501187, 1.000000 },                                                 }, // C + L + R
-    { { 1.000000, 0.501187 }, { 0.501187, 1.000000 }, { 0.707946, 0.707946 },                                                 }, // L + R + S
-    { { 0.865964, 0.865964 }, { 1.000000, 0.501187 }, { 0.501187, 1.000000 }, { 0.707946, 0.707946 },                         }, // C + L + R + S
-    { { 1.000000, 0.501187 }, { 0.501187, 1.000000 }, { 1.000000, 0.707946 }, { 0.707946, 1.000000 },                         }, // L + R + SL + SR
-    { { 0.865964, 0.865964 }, { 1.000000, 0.501187 }, { 0.501187, 1.000000 }, { 1.000000, 0.707946 }, { 0.707946, 1.000000 }, }, // C + L + R + SL + SR
+    { { 0.501187, 0.501187 }, { 0.707107, 0.000000 }, { 0.000000, 0.707107 },                                                 }, // C + L + R
+    { { 0.707107, 0.000000 }, { 0.000000, 0.707107 }, { 0.501187, 0.501187 },                                                 }, // L + R + S
+    { { 0.501187, 0.501187 }, { 0.707107, 0.000000 }, { 0.000000, 0.707107 }, { 0.501187, 0.501187 },                         }, // C + L + R + S
+    { { 0.707107, 0.000000 }, { 0.000000, 0.707107 }, { 0.501187, 0.000000 }, { 0.000000, 0.501187 },                         }, // L + R + SL + SR
+    { { 0.501187, 0.501187 }, { 0.707107, 0.000000 }, { 0.000000, 0.707107 }, { 0.501187, 0.000000 }, { 0.000000, 0.501187 }, }, // C + L + R + SL + SR
 };
 
 /* downmix coeffs