diff --git a/firmware/include/pt1.h b/firmware/include/pt1.h
index ec627d9..1590f73 100644
--- a/firmware/include/pt1.h
+++ b/firmware/include/pt1.h
@@ -9,6 +9,7 @@ struct Pt1
 
     /* PT1: y = y_(n-1) + (Ku - y_(n-1)) * dt/T1 */
     Pt1(T K, T T1) : T1(T1), K(K){};
+    Pt1() = default;
 
     T update(T u, T dt)
     {
diff --git a/firmware/src/applications/beat_detect.cpp b/firmware/src/applications/beat_detect.cpp
index 04feed0..5a8fa88 100644
--- a/firmware/src/applications/beat_detect.cpp
+++ b/firmware/src/applications/beat_detect.cpp
@@ -12,9 +12,9 @@
 #define SAMPLING_FREQUENCY_CONTROL \
     1         // check number of times per second if the current band pass is the best
               // one
-#define Q 20. // quality factor of band pass filters
+#define Q 30. // quality factor of band pass filters
 #define PI 3.1415926535897932384626433832795
-#define n_BP 30 // number of band pass filters
+#define n_BP 40 // number of band pass filters
 
 static const unsigned long sampling_period_bp = 1000000L / SAMPLING_FREQUENCY_BP;
 static const unsigned long sampling_period_control = 1000000L / SAMPLING_FREQUENCY_CONTROL;
@@ -23,7 +23,7 @@ static unsigned long last_us_bp = 0L;
 static unsigned long last_us_control = 0L;
 
 static Biquad<float> bp_filters[n_BP];
-static Pt1<float> y_filter{1.f, 1.f};
+static Pt1<float> y_filter[n_BP];
 static Pt1<float> pos_filter{1.f, 1.f};
 
 static float yy1[n_BP];
@@ -45,7 +45,6 @@ static float pos_target_filtered = NUM_LEDS / 2;
 static long initial_time;
 
 static int active = 15;
-static int candidate = 15;
 static int rounds = 0;
 static int n_samples = 0;
 
@@ -78,6 +77,7 @@ set_filter()
         a1 = -2.f * cos(w0);
         a2 = 1.f - a;
         bp_filters[i] = Biquad<float>{a0, a1, a2, b0, b1, b2};
+        y_filter[i] = Pt1<float>{1.f, 1.f};
     }
 }
 
@@ -88,7 +88,6 @@ void BeatDetectApp::init()
     pos_target = NUM_LEDS / 2;
     pos_target_filtered = NUM_LEDS / 2;
     active = 15;
-    candidate = 15;
     rounds = 0;
     n_samples = 0;
 
@@ -128,7 +127,7 @@ void BeatDetectApp::loop()
             yy3[i] = yy2[i];
             yy2[i] = yy1[i];
             yy1[i] = y[i];
-            y_fil[i] = y_filter.update(std::abs(y[i]),
+            y_fil[i] = y_filter[i].update(std::abs(y[i]),
                                        0.005f); // linie der scheitelpunkte
                                                 // y_fil[i] += (abs(y[i]) - y_fil[i]) * 0.005; //linie der
                                                 // scheitelpunkte
@@ -181,8 +180,12 @@ void BeatDetectApp::loop()
 
         for (int i = 0; i < NUM_LEDS; i++)
         {
+            //leds[i].g = get_value(i, pos_target_filtered);
+            //leds[i].r = get_value(i, pos_target_filtered + 2);
+            //leds[i].b = get_value(i, pos_target_filtered - 2);
+
             leds[i].g = get_value(i, pos_target_filtered);
-            leds[i].r = get_value(i, pos_target_filtered + 2);
+            leds[i].r = 0; //get_value(i, pos_target_filtered + 2);
             leds[i].b = get_value(i, pos_target_filtered - 2);
 
             // leds[i].setRGB(brightness_red, brightness_green, brightness_blue);
@@ -205,22 +208,16 @@ void BeatDetectApp::loop()
             }
         }
 
-        if (argmax > -1)
+        if (argmax != active)
         {
-            if (argmax == candidate)
-            {
-                rounds++;
-            }
-            else
-            {
-                rounds = 0;
-                candidate = argmax;
-            }
-            if (rounds > 3)
-            {
-                rounds = 0;
-                active = candidate;
-            }
+            rounds++;
         }
+
+        if (rounds > 5)
+        {
+            rounds = 0;
+            active = argmax;
+        }
+
     }
 }
diff --git a/firmware/src/applications/fackel.cpp b/firmware/src/applications/fackel.cpp
index 8c5ce58..318d843 100644
--- a/firmware/src/applications/fackel.cpp
+++ b/firmware/src/applications/fackel.cpp
@@ -95,7 +95,8 @@ void FackelApp::init()
     for (int i = 0; i < 128; i++)
     {
         uint8_t r, g, b;
-        hsl_to_rgb(i / 5, 255, i * 2 > 128 ? 128 : i * 2, &r, &g, &b);
+        //hsl_to_rgb(i / 5, 255, i * 2 > 128 ? 128 : i * 2, &r, &g, &b);
+        hsl_to_rgb(i / 5 + 180, 255, i * 2 > 128 ? 128 : i * 2, &r, &g, &b);
         g = g == 1 ? 0 : g;
         b = b == 1 ? 0 : b;
         palette[i].r = r;
diff --git a/firmware/src/main.cpp b/firmware/src/main.cpp
index 8463305..173594a 100644
--- a/firmware/src/main.cpp
+++ b/firmware/src/main.cpp
@@ -22,10 +22,6 @@ std::vector<std::reference_wrapper<App>> apps = {
     std::ref<App>(fackel_app)
     };
 
-<<<<<<< HEAD
-unsigned int current_app = 1;
-unsigned int next_app;
-=======
 static unsigned int current_app = 0;
 static unsigned int next_app;
 static bool init_successfull = false;
@@ -55,20 +51,14 @@ void switch_app() {
 
     next_app = next_app % apps.size();
 }
->>>>>>> update main app handling to include an off state
 
 void setup()
 {
     next_app = current_app;
-<<<<<<< HEAD
-    zauberstab_init();
-    //Serial.begin(115200);
-=======
     if (zauberstab_init() != 0) {
         return;
     }
     Serial.begin(115200);
->>>>>>> update main app handling to include an off state
 
     init_successfull = true;
     apps[current_app].get().init();