From ce44f9989b71961ff2c57216e05c0b14730bd666 Mon Sep 17 00:00:00 2001
From: Florian <florian.taurer@gmx.at>
Date: Wed, 5 Sep 2018 14:01:51 +0200
Subject: [PATCH] set all jamming frequency values to the same level, change to
complexInverse fft instead of multiplying by -1 and complexforward fft
---
.../at/ac/fhstp/sonicontrol/NoiseGenerator.java | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/SoniControl/app/src/main/java/at/ac/fhstp/sonicontrol/NoiseGenerator.java b/SoniControl/app/src/main/java/at/ac/fhstp/sonicontrol/NoiseGenerator.java
index 2bd482f2..d08000e9 100644
--- a/SoniControl/app/src/main/java/at/ac/fhstp/sonicontrol/NoiseGenerator.java
+++ b/SoniControl/app/src/main/java/at/ac/fhstp/sonicontrol/NoiseGenerator.java
@@ -229,14 +229,24 @@ public class NoiseGenerator {
complexSignal[(int)l] = 0.0f; //set all frequencies between the higher frequency of one band to the lower frequency of the next band to 0 mirrored to the doubled winLenSamples size
}
}
+ for (int k = 0; k < whiteNoiseBands.length-2; k++) {
+ for (double l = cutoffFreqDownIdx[k]; l <= cutoffFreqUpIdx[k]; l++) {
+ complexSignal[(int)l] = 10000.0f; //set all frequencies between the higher frequency of one band to the lower frequency of the next band to 0
+ }
+ int helpSamples = winLenSamples * 2;
+ for (double l = helpSamples-cutoffFreqUpIdx[k]; l <= helpSamples-cutoffFreqDownIdx[k]; l++) {
+ complexSignal[(int)l] = 10000.0f; //set all frequencies between the higher frequency of one band to the lower frequency of the next band to 0 mirrored to the doubled winLenSamples size
+ }
+ }
}
- for (int i = 0; i < complexSignal.length - 1; i++) {
+ /*for (int i = 0; i < complexSignal.length - 1; i++) {
complexSignal[i] = complexSignal[i] * (-1); //invert all algebraic signs
}
mFFT.complexForward(complexSignal); //make the fft on the inverted signal
-
+*/
+ mFFT.complexInverse(complexSignal,false);
return complexSignal; //return the signal with the complex values
}
--
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