X-Git-Url: http://git.harvie.cz/?a=blobdiff_plain;f=c%2Fgoertzel%2Fgoertzel.c;h=19bfdf56eec479d9e372c6f1d3067241b0384fa2;hb=599af17a2a0cc574095f2ec50971928ef5ef3ead;hp=2cde63bfe2a015ef2ec398c99c3d69a1f958b3d5;hpb=e69402f8a593772c51357d8f515335ad015aa838;p=mirrors%2FPrograms.git

diff --git a/c/goertzel/goertzel.c b/c/goertzel/goertzel.c
index 2cde63b..19bfdf5 100644
--- a/c/goertzel/goertzel.c
+++ b/c/goertzel/goertzel.c
@@ -29,8 +29,8 @@ float goertzel_mag(int numSamples,float TARGET_FREQUENCY,int SAMPLING_RATE, floa
 
     // calculate the real and imaginary results
     // scaling appropriately
-    real = (q1 - q2 * cosine) / scalingFactor;
-    imag = (q2 * sine) / scalingFactor;
+    real = (q2 - q1 * cosine) / scalingFactor;
+    imag = (q1 * sine) / scalingFactor;
 
     magnitude = sqrtf(real*real + imag*imag);
     return magnitude;