diff --git a/02-SplineInterpolator/SplineInterpolator/hdl/interpolatorCalculatePolynom_studentVersion.vhd b/02-SplineInterpolator/SplineInterpolator/hdl/interpolatorCalculatePolynom_studentVersion.vhd
index eb44fce..60a69e5 100644
--- a/02-SplineInterpolator/SplineInterpolator/hdl/interpolatorCalculatePolynom_studentVersion.vhd
+++ b/02-SplineInterpolator/SplineInterpolator/hdl/interpolatorCalculatePolynom_studentVersion.vhd
@@ -1,6 +1,6 @@
 ARCHITECTURE studentVersion OF interpolatorCalculatePolynom IS
 
-subtype sample_type is signed(coeffBitNb-1+oversamplingBitNb DOWNTO 0);
+subtype sample_type is signed(coeffBitNb-1+oversamplingBitNb+10 DOWNTO 0);
 type order0 is array (0 to 0) of sample_type;
 type order1 is array (0 to 1) of sample_type;
 type order2 is array (0 to 2) of sample_type;
@@ -9,6 +9,7 @@ signal cA: order3;
 signal cB: order2;
 signal cC: order1;
 signal cD: order0;
+signal bufferSine: sample_type;
 
 BEGIN
 
@@ -18,6 +19,7 @@ BEGIN
       cB <= (others => (others => '0'));
       cC <= (others => (others => '0'));
       cD <= (others => (others => '0'));
+      bufferSine <= (others => '0');
     elsif rising_edge(clock) then
 
       if restartPolynom = '1' then
@@ -37,18 +39,26 @@ BEGIN
         
       else
 
-        cC(1) <= resize(c,sample_type'high+1) + cC(1);
+        cC(1) <= cC(0) + cC(1);
 
-        cB(2) <= cB(2) + resize(2*cB(1),sample_type'high+1) + b;
+        cB(2) <= cB(2) + resize(2*cB(1),sample_type'high+1) + cB(0);
         cB(1) <= resize(b,sample_type'high+1) + cB(1);
 
-        cA(3) <= cA(3) + resize(3*cA(2),sample_type'high+1) + resize(3*cA(1),sample_type'high+1) + a;
-        cA(2) <= cA(2) + resize(2*cA(1),sample_type'high+1) + a;
+        cA(3) <= cA(3) + resize(3*cA(2),sample_type'high+1) + resize(3*cA(1),sample_type'high+1) + cA(0);
+        cA(2) <= cA(2) + resize(2*cA(1),sample_type'high+1) + cA(0);
         cA(1) <= resize(A,sample_type'high+1) + cA(1);
 
       end if;
+
+      bufferSine <= bufferSine + shift_right(cA(3)+cB(2)+cC(1)+cD(0),0);
+
     end if;
   end process;
 
-  sampleOut <= resize(cA(3)+cB(2)+cC(1)+cD(0),signalBitNb);
+  process(cA, cB, cC, cD) begin
+    --bufferSine <= bufferSine + cA(3)+cB(2)+cC(1)+cD(0);
+  end process;
+
+  --sampleOut <= resize(shift_right(cA(3)+cB(2)+cC(1)+cD(0),oversamplingBitNb),signalBitNb);
+  sampleOut <= resize(bufferSine,signalBitNb);
 END ARCHITECTURE studentVersion;