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[mirrors/Programs.git]
/
c
/
goertzel
/
goertzel.c
diff --git
a/c/goertzel/goertzel.c
b/c/goertzel/goertzel.c
index 19bfdf56eec479d9e372c6f1d3067241b0384fa2..d13a874d9612379d94ca4e07c7de72da16ea7294 100644
(file)
--- a/
c/goertzel/goertzel.c
+++ b/
c/goertzel/goertzel.c
@@
-29,7
+29,7
@@
float goertzel_mag(int numSamples,float TARGET_FREQUENCY,int SAMPLING_RATE, floa
// calculate the real and imaginary results
// scaling appropriately
- real = (q
2 - q1 * cosine
) / scalingFactor;
+ real = (q
1 * cosine - q2
) / scalingFactor;
imag = (q1 * sine) / scalingFactor;
magnitude = sqrtf(real*real + imag*imag);
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