diff --git a/RpiLedBars/README.md b/RpiLedBars/README.md
index 8cb5b89..95bd5a8 100644
--- a/RpiLedBars/README.md
+++ b/RpiLedBars/README.md
@@ -21,4 +21,39 @@ biblio:
   * ws2812 with dma/smi from Jeremy P Bentham :
     * ws2812 - https://iosoft.blog/2020/09/29/raspberry-pi-multi-channel-ws2812/
     * dma - https://iosoft.blog/2020/05/25/raspberry-pi-dma-programming/
-    * smi - https://iosoft.blog/2020/07/16/raspberry-pi-smi/
\ No newline at end of file
+    * smi - https://iosoft.blog/2020/07/16/raspberry-pi-smi/
+
+Raspi Config :
+
+https://makersportal.com/blog/recording-stereo-audio-on-a-raspberry-pi
+https://learn.adafruit.com/adafruit-i2s-mems-microphone-breakout/raspberry-pi-wiring-test
+
+sudo apt install python3-pip
+sudo pip3 install --upgrade adafruit-python-shell
+cd /tmp
+sudo wget https://raw.githubusercontent.com/adafruit/Raspberry-Pi-Installer-Scripts/master/i2smic.py
+sudo python3 i2smic.py
+
+# plug microphone
+sudo reboot
+arecord -l
+arecord -D plughw:1 -c1 -r 48000 -f S32_LE -t wav -V mono -v file.wav
+
+# Control record volume
+cp res/.asoundrc ~/.asoundrc
+
+# alsa API
+http://www.equalarea.com/paul/alsa-audio.html
+
+# for project
+sudo apt install libasound2-dev wiringpi
+
+# for cava
+sudo apt install libfftw3-dev libasound2-dev libtool automake
+./autogen.sh
+./configure
+make
+sudo make install
+
+# Access point
+grep "Access point conf" $(find /etc -type f)
\ No newline at end of file
diff --git a/RpiLedBars/pixled.service b/RpiLedBars/pixled.service
index 6450e48..eb9a841 100644
--- a/RpiLedBars/pixled.service
+++ b/RpiLedBars/pixled.service
@@ -3,7 +3,7 @@ Description=pixled
 After=network.target
 
 [Service]
-ExecStart=pixled -n 180 -d 2
+ExecStart=pixled -n 60 -d 2
 Restart=always
 User=root
 Group=root
diff --git a/RpiLedBars/src/main.c b/RpiLedBars/src/main.c
index 02e35d2..2383d72 100644
--- a/RpiLedBars/src/main.c
+++ b/RpiLedBars/src/main.c
@@ -26,6 +26,7 @@
 
 #include "rpi_midi_controller.h"
 #include "rpi_param.h"
+#include "rpi_pattern.h"
 
 /***************************************************************************************************
  * Preprocessor Constants and Macros
@@ -40,7 +41,6 @@
  **************************************************************************************************/
 /*  Command-line parameters */
 bool IsTestMode = false;
-int chanLedCount = 0;
 int logLevel = 2;
 
 int previousMode = -1;
@@ -79,9 +79,6 @@ void log_lock_helper(bool lock, void *udata);
 
 int main(int argc, char const *argv[]) {
   // setup
-  parseCommandLineArgs(argc, argv);
-  log_set_level(logLevel);
-
   signal(SIGINT, terminate);
 
   struct sched_param sp;
@@ -98,7 +95,7 @@ int main(int argc, char const *argv[]) {
   selector_setup();
   leddriver_setup();
 
-  // setup_cava();
+  parseCommandLineArgs(argc, argv);
 
   // loop
   while (1) {
@@ -149,7 +146,7 @@ void parseCommandLineArgs(int argc, char const *argv[]) {
           log_error("no numeric value");
           exit(-EXIT_FAILURE);
         } else {
-          chanLedCount = atoi(argv[++args]);
+          param_access->pixled.chanLedCount = atoi(argv[++args]);
         }
         break;
       case 'D': // -D: debug level
@@ -158,6 +155,7 @@ void parseCommandLineArgs(int argc, char const *argv[]) {
           exit(-EXIT_FAILURE);
         } else {
           logLevel = atoi(argv[++args]);
+          log_set_level(logLevel);
         }
         break;
       case 'T': // -T: test mode
@@ -189,6 +187,7 @@ void manage_tasks(int previousMode, int currentMode) {
     artnet_stop();
     break;
   case 2:
+  case 3:
     cava_stop();
     break;
   default:
@@ -201,6 +200,7 @@ void manage_tasks(int previousMode, int currentMode) {
     artnet_start();
     break;
   case 2:
+  case 3:
     cava_start();
     break;
   default:
@@ -241,13 +241,14 @@ void execute_test_mode() {
 
   static int i = 0, offset = 0;
 
-  for (size_t ledIndex = 0; ledIndex < chanLedCount; ++ledIndex) {
-    set_color(ledIndex <= offset % chanLedCount ? on_rgbs[i] * .5 : off_rgbs, ledIndex);
+  for (size_t ledIndex = 0; ledIndex < param_access->pixled.chanLedCount; ++ledIndex) {
+    set_color(ledIndex <= offset % param_access->pixled.chanLedCount ? on_rgbs[i] * .5 : off_rgbs,
+              ledIndex);
   }
 
   leddriver_refresh();
 
-  if (offset < chanLedCount) {
+  if (offset < param_access->pixled.chanLedCount) {
     ++offset;
   } else {
     offset = 0;
@@ -267,7 +268,7 @@ void execute_artnet_mode() {
 
   for (size_t ledBar = 0; ledBar < LED_NCHANS; ledBar++) {
     if (artnet_get_dmx_data(ledBar, &dmxData) == 0) {
-      for (size_t i = 0; i < chanLedCount; ++i) {
+      for (size_t i = 0; i < param_access->pixled.chanLedCount; ++i) {
         uint8_t *rgb = dmxData + (i * 3);
         rgb_data[i][ledBar] = (rgb[0] << 16) | (rgb[1] << 8) | rgb[2];
         rgb_txdata(rgb_data[i], i);
@@ -278,17 +279,39 @@ void execute_artnet_mode() {
   leddriver_refresh();
 }
 
-uint16_t static const minHue = 120 * UINT16_MAX / 360;
-uint16_t static const maxHue = 300 * UINT16_MAX / 360;
-uint16_t static const hueInterval = UINT16_MAX - (maxHue - minHue);
-
 void execute_autonomous_mode() {
   int ret;
   uint16_t *buffer;
 
+  if ((ret = cava_get_buffer(&buffer)) == 0) {
+    switch (param_access->auton.pattern) {
+    case 0:
+      bounce_led_and_color(buffer, CAVA_BAR_NUMBER);
+      break;
+    case 1:
+      bounce_led(buffer, CAVA_BAR_NUMBER);
+      break;
+    case 2:
+      bounce_led_and_travel(buffer, CAVA_BAR_NUMBER);
+      break;
+
+    default:
+      break;
+    }
+  }
+}
+
+unsigned baseLed[LED_NCHANS] = {0};
+
+void execute_manual_mode() {
+  int ret;
+  uint16_t *buffer;
+
   if ((ret = cava_get_buffer(&buffer)) == 0) {
     for (size_t ledBarIndex = 0; ledBarIndex < LED_NCHANS; ++ledBarIndex) {
       uint16_t barMax = 0;
+      // uint16_t hueInterval = UINT16_MAX - (param_access->ledbar[ledBarIndex].hueInterval -
+      //                                      param_access->ledbar[ledBarIndex].hueBase);
       for (size_t cavaBar = 0; cavaBar < CAVA_BAR_NUMBER / LED_NCHANS; ++cavaBar) {
         unsigned barIndex = ledBarIndex * CAVA_BAR_NUMBER / LED_NCHANS + cavaBar;
         if (barMax < buffer[barIndex]) {
@@ -296,16 +319,17 @@ void execute_autonomous_mode() {
         }
       }
       barMax *= param_access->auton.sensitivity * param_access->ledbar[ledBarIndex].sensitivity;
-      unsigned ledToLight = barMax * chanLedCount / UINT16_MAX;
-      unsigned long hueShift = (long)barMax * (long)hueInterval / hueInterval;
-      uint16_t hue = minHue - hueShift;
-      uint32_t color = ColorHSV(hue, 255, 100);
+      unsigned ledToLight = barMax * param_access->pixled.chanLedCount / 2 / UINT16_MAX;
+      unsigned long hueShift =
+          (long)barMax * (long)param_access->ledbar[ledBarIndex].hueInterval / UINT16_MAX;
+      uint16_t hue = param_access->ledbar[ledBarIndex].hueBase - hueShift;
+      uint32_t color = ColorHSV(hue, 255, param_access->ledbar[ledBarIndex].luminosity);
 
       for (size_t i = 0; i < ledToLight; ++i) {
         rgb_data[i][ledBarIndex] = color;
         rgb_txdata(rgb_data[i], i);
       }
-      for (size_t i = ledToLight; i < chanLedCount; ++i) {
+      for (size_t i = ledToLight; i < param_access->pixled.chanLedCount; ++i) {
         rgb_data[i][ledBarIndex] = 0x000000;
         rgb_txdata(rgb_data[i], i);
       }
@@ -315,16 +339,6 @@ void execute_autonomous_mode() {
   }
 }
 
-void execute_manual_mode() {
-  for (size_t ledBarIndex = 0; ledBarIndex < LED_NCHANS; ++ledBarIndex) {
-    for (size_t i = 0; i < chanLedCount; ++i) {
-      rgb_data[i][ledBarIndex] = 0x000000;
-      rgb_txdata(rgb_data[i], i);
-    }
-  }
-  leddriver_refresh();
-}
-
 void adjust_loop(struct timespec const *loopStart) {
   struct timespec loopEnd;
   long elapsedTimeUs, remainingTimeUs;
diff --git a/RpiLedBars/src/rpi_midi_controller.c b/RpiLedBars/src/rpi_midi_controller.c
index 8febffa..36daade 100644
--- a/RpiLedBars/src/rpi_midi_controller.c
+++ b/RpiLedBars/src/rpi_midi_controller.c
@@ -18,7 +18,8 @@
  * Preprocessor Constants and Macros
  **************************************************************************************************/
 
-#define C3 0x30
+#define C3 48
+#define Gd3 56
 
 /***************************************************************************************************
  * Type and Contant Definitions
@@ -161,35 +162,52 @@ void handle_in_port_events(snd_seq_event_t *ev) {
         destChannel = ev->data.control.value;
         log_info("Control param channel %d", ev->data.control.value);
       }
-    } else {
-      log_debug("PGMCHANGE : ch %#04x - param %u - value %d", ev->data.control.channel,
-                ev->data.control.param, ev->data.control.value);
+    } else if (destChannel != GLOBAL_CHANNEL) {
+      log_info("Control global param");
+      destChannel = GLOBAL_CHANNEL;
     }
     break;
 
   case SND_SEQ_EVENT_NOTEON:
     if (ev->data.note.note == C3) {
-      if (destChannel != 0xf) {
-        destChannel = 0xf;
+      if (destChannel != GLOBAL_CHANNEL) {
+        destChannel = GLOBAL_CHANNEL;
         log_info("Control global param");
       }
+    } else if (ev->data.note.note >= Gd3) {
+      set_pattern(ev->data.note.note - Gd3);
     } else {
       log_debug("NOTEON : ch %#04x - note %d - vel %d", ev->data.note.channel, ev->data.note.note,
                 ev->data.note.velocity);
     }
     break;
 
+  case SND_SEQ_EVENT_NOTEOFF:
+    break;
+
   case SND_SEQ_EVENT_CONTROLLER:
     switch (ev->data.control.param) {
     case 1:
-      set_sensitivity(destChannel, ev->data.control.value + 1);
+      set_sensitivity(destChannel, ev->data.control.value);
+      break;
+    case 2:
+      set_luminosity(destChannel, ev->data.control.value);
+      break;
+    case 3:
+      set_hue_base(destChannel, ev->data.control.value);
+      break;
+    case 4:
+      set_hue_interval(destChannel, ev->data.control.value);
+      break;
+    case 5:
+      set_gravity(ev->data.control.value);
       break;
 
     default:
+      log_debug("CONTROLLER : ch %#04x - param %u - value %d", ev->data.control.channel,
+                ev->data.control.param, ev->data.control.value);
       break;
     }
-    log_debug("CONTROLLER : ch %#04x - param %u - value %d", ev->data.control.channel,
-              ev->data.control.param, ev->data.control.value);
     break;
 
   default:
diff --git a/RpiLedBars/src/rpi_param.c b/RpiLedBars/src/rpi_param.c
index 9b3a5a0..82e38e1 100644
--- a/RpiLedBars/src/rpi_param.c
+++ b/RpiLedBars/src/rpi_param.c
@@ -8,8 +8,11 @@
 
 #include "rpi_param.h"
 
+#include <math.h>
 #include <stdlib.h>
 
+#include "log.h"
+
 /***************************************************************************************************
  * Preprocessor Constants and Macros
  **************************************************************************************************/
@@ -18,9 +21,10 @@
  * Type and Contant Definitions
  **************************************************************************************************/
 
-pixled_param_t const dummyPixledParam = {.intensity = .5, .hue = 0};
-auton_param_t const dummyAutonParam = {.sensitivity = 1};
-ledbar_param_t const dummyLedbarParam = {.sensitivity = 1};
+pixled_param_t const dummyPixledParam = {.chanLedCount = 0};
+auton_param_t const dummyAutonParam = {.sensitivity = 10, .gravity = 80, .pattern = 2};
+ledbar_param_t const dummyLedbarParam = {
+    .sensitivity = 1., .hueBase = 121, .hueInterval = -100, .luminosity = 20, .saturation = 255};
 
 /***************************************************************************************************
  * Persistent Variables
@@ -39,18 +43,74 @@ param_t param;
 void param_setup() {
   param.pixled = dummyPixledParam;
   param.auton = dummyAutonParam;
-  for (size_t i = 0; i < 10; ++i) {
+  for (size_t i = 0; i < LED_NCHANS; ++i) {
     param.ledbar[i] = dummyLedbarParam;
   }
   param_access = &param;
 }
 
-void set_sensitivity(int channel, unsigned int sensitivity) {
-  if (channel >= 10) {
+void set_pattern(unsigned int pattern) {
+  if (pattern != param.auton.pattern) {
+    param.auton.pattern = pattern;
+    log_debug("Pattern : %d", pattern);
+  }
+}
+
+void set_gravity(int8_t gravity8) {
+  param.auton.gravity = gravity8 * 100 / INT8_MAX;
+  log_debug("Gravity : %d", param.auton.gravity);
+}
+
+void set_sensitivity(int channel, int8_t sensitivity8) {
+  float sensitivity = pow(1.065, sensitivity8 - INT8_MAX / 2);
+  if (channel >= LED_NCHANS) {
     param.auton.sensitivity = sensitivity;
   } else {
     param.ledbar[channel].sensitivity = sensitivity;
   }
+  log_debug("Sensitivity : %f", sensitivity);
+}
+
+void set_hue_base(int channel, int8_t hueBase8) {
+  uint16_t hueBase = hueBase8 * HUEBASE_MAX / INT8_MAX;
+  if (channel < LED_NCHANS) {
+    param.ledbar[channel].hueBase = hueBase;
+  } else {
+    for (size_t i = 0; i < LED_NCHANS; ++i) {
+      param.ledbar[i].hueBase = hueBase;
+    }
+  }
+  log_debug("Hue base : %u", hueBase);
+}
+
+void set_hue_interval(int channel, int8_t hueInterval8) {
+  int16_t hueInterval = hueInterval8 - ((INT8_MAX + 1) / 2);
+  if (hueInterval != 0) {
+    hueInterval = hueInterval * HUEINTERVAL_MAX / (INT8_MAX / 2);
+  }
+
+  if (channel < LED_NCHANS) {
+    param.ledbar[channel].hueInterval = hueInterval;
+  } else {
+    for (size_t i = 0; i < LED_NCHANS; ++i) {
+      param.ledbar[i].hueInterval = hueInterval;
+    }
+  }
+  log_debug("Hue interval [%2d] : %d - [%u, %hu]", channel, hueInterval,
+            param.ledbar[0].hueBase * UINT16_MAX / HUE_MAX,
+            (param.ledbar[0].hueBase + hueInterval) * UINT16_MAX / HUE_MAX);
+}
+
+void set_luminosity(int channel, int8_t luminosity8) {
+  uint8_t luminosity = luminosity8 * UINT8_MAX / INT8_MAX;
+  if (channel < LED_NCHANS) {
+    param.ledbar[channel].luminosity = luminosity;
+  } else {
+    for (size_t i = 0; i < LED_NCHANS; ++i) {
+      param.ledbar[i].luminosity = luminosity;
+    }
+  }
+  log_debug("Luminosity : %u", luminosity);
 }
 
 /***************************************************************************************************
diff --git a/RpiLedBars/src/rpi_param.h b/RpiLedBars/src/rpi_param.h
index 39f2691..5573107 100644
--- a/RpiLedBars/src/rpi_param.h
+++ b/RpiLedBars/src/rpi_param.h
@@ -18,6 +18,18 @@
 #define CHAN_MAXLEDS 6 * 60 // Maximum number of LEDs per channel
 #define LED_NCHANS 8        // Number of LED channels (8 or 16)
 
+#define GLOBAL_CHANNEL 15
+
+#define HUE_MAX 359
+#define HUEBASE_MIN 0
+#define HUEBASE_MAX HUE_MAX
+#define HUEINTERVAL_MIN -HUE_MAX
+#define HUEINTERVAL_MAX HUE_MAX
+#define LUMINOSITY_MIN 0
+#define LUMINOSITY_MAX 255
+#define SATURATION_MIN 0
+#define SATURATION_MAX 255
+
 /***************************************************************************************************
  * Type and Contant Definitions
  **************************************************************************************************/
@@ -26,22 +38,27 @@
  *
  */
 typedef struct {
-  uint8_t intensity;
-  int hue;
+  unsigned int chanLedCount;
 } pixled_param_t;
 
 /**
  *
  */
 typedef struct {
-  unsigned int sensitivity;
+  float sensitivity;
+  unsigned int gravity;
+  unsigned int pattern;
 } auton_param_t;
 
 /**
  *
  */
 typedef struct {
-  unsigned int sensitivity;
+  float sensitivity;
+  unsigned int hueBase;
+  int hueInterval;
+  unsigned int luminosity;
+  unsigned int saturation;
 } ledbar_param_t;
 
 /**
@@ -50,7 +67,7 @@ typedef struct {
 typedef struct {
   pixled_param_t pixled;
   auton_param_t auton;
-  ledbar_param_t ledbar[10];
+  ledbar_param_t ledbar[LED_NCHANS];
 } param_t;
 
 /***************************************************************************************************
@@ -68,13 +85,33 @@ param_t *param_access;
  */
 void param_setup();
 
+/**
+ * \brief
+ *
+ * \param[in] pattern
+ */
+void set_pattern(unsigned int pattern);
+
+/**
+ * \brief
+ *
+ * \param[in] pattern
+ */
+void set_gravity(int8_t gravity8);
+
 /**
  * \brief
  *
  * \param[in] channel
  *
- * \param[in] sensitivity
+ * \param[in] sensitivity8
  */
-void set_sensitivity(int channel, unsigned int sensitivity);
+void set_sensitivity(int channel, int8_t sensitivity8);
+
+void set_hue_base(int channel, int8_t hueBase8);
+
+void set_hue_interval(int channel, int8_t hueInterval8);
+
+void set_luminosity(int channel, int8_t luminosity8);
 
 #endif /* __RPI_PARAM_H__ */
\ No newline at end of file
diff --git a/RpiLedBars/src/rpi_pattern.c b/RpiLedBars/src/rpi_pattern.c
new file mode 100644
index 0000000..1c90390
--- /dev/null
+++ b/RpiLedBars/src/rpi_pattern.c
@@ -0,0 +1,207 @@
+/** \file .c
+ *  \brief This module
+ */
+
+/***************************************************************************************************
+ * Includes
+ **************************************************************************************************/
+
+#include "rpi_pattern.h"
+
+#include "log.h"
+
+#include "drivers/leddriver/rpi_leddriver.h"
+#include "rpi_param.h"
+
+/***************************************************************************************************
+ * Preprocessor Constants and Macros
+ **************************************************************************************************/
+
+/***************************************************************************************************
+ * Type and Contant Definitions
+ **************************************************************************************************/
+
+/***************************************************************************************************
+ * Persistent Variables
+ **************************************************************************************************/
+
+/**
+ * RGB data buffer. Persistency is not needed but, as of it size, it must be declared in heap
+ */
+int rgbData[CHAN_MAXLEDS][LED_NCHANS];
+
+/**
+ * Number of led previously lighted per led bar
+ */
+int lightedLedCountArray[LED_NCHANS];
+
+/**
+ * Index of first previously lighted per led bar
+ */
+int baseLedIndexArray[LED_NCHANS];
+
+/***************************************************************************************************
+ * Internal Function Prototypes
+ **************************************************************************************************/
+
+uint16_t get_max_on_interval(uint16_t *array, unsigned int length, size_t intervalMin,
+                             size_t intervalSize);
+
+uint16_t apply_sensitivity(uint16_t value, unsigned int valueIndex);
+
+unsigned int get_led_to_light_count(uint16_t barValue, unsigned int barIndex);
+
+unsigned int get_first_led_to_light(unsigned int barIndex);
+
+/***************************************************************************************************
+ * External Function Definitions
+ **************************************************************************************************/
+
+void bounce_led_and_color(uint16_t *spectrumArray, unsigned int spectrumLength) {
+  for (size_t ledBarIndex = 0; ledBarIndex < LED_NCHANS; ++ledBarIndex) {
+    size_t intervalSize = spectrumLength / LED_NCHANS;
+    uint16_t barMax = 0;
+    unsigned int ledToLightCount = 0;
+
+    barMax = get_max_on_interval(spectrumArray, spectrumLength, ledBarIndex * intervalSize,
+                                 intervalSize);
+    barMax = apply_sensitivity(barMax, ledBarIndex);
+    ledToLightCount = get_led_to_light_count(barMax, ledBarIndex);
+
+    int hueShift = (long)(ledToLightCount - 1) * param_access->ledbar[ledBarIndex].hueInterval /
+                   (long)param_access->pixled.chanLedCount;
+    uint16_t hue = param_access->ledbar[ledBarIndex].hueBase + hueShift;
+    // log_trace("light %u leds on bar %u - hueShift : %d, hue %u", ledToLightCount, ledBarIndex,
+    //           hueShift, hue);
+    uint32_t color =
+        ColorHSV(hue * UINT16_MAX / HUEBASE_MAX, param_access->ledbar[ledBarIndex].saturation,
+                 param_access->ledbar[ledBarIndex].luminosity);
+
+    for (size_t i = 0; i < ledToLightCount; ++i) {
+      rgbData[i][ledBarIndex] = color;
+      rgb_txdata(rgbData[i], i);
+    }
+    for (size_t i = ledToLightCount; i < param_access->pixled.chanLedCount; ++i) {
+      rgbData[i][ledBarIndex] = 0x000000;
+      rgb_txdata(rgbData[i], i);
+    }
+  }
+
+  leddriver_refresh();
+}
+
+void bounce_led(uint16_t *spectrumArray, unsigned int spectrumLength) {
+  for (size_t ledBarIndex = 0; ledBarIndex < LED_NCHANS; ++ledBarIndex) {
+    size_t intervalSize = spectrumLength / LED_NCHANS;
+    uint16_t barMax = 0;
+    unsigned int ledToLightCount = 0;
+
+    barMax = get_max_on_interval(spectrumArray, spectrumLength, ledBarIndex * intervalSize,
+                                 intervalSize);
+    barMax = apply_sensitivity(barMax, ledBarIndex);
+    ledToLightCount = get_led_to_light_count(barMax, ledBarIndex);
+
+    for (size_t i = 0; i < ledToLightCount; ++i) {
+      unsigned long hueShift = (long)i * param_access->ledbar[ledBarIndex].hueInterval /
+                               (long)param_access->pixled.chanLedCount;
+      uint16_t hue = param_access->ledbar[ledBarIndex].hueBase + hueShift;
+      uint32_t color =
+          ColorHSV(hue * UINT16_MAX / HUEBASE_MAX, param_access->ledbar[ledBarIndex].saturation,
+                   param_access->ledbar[ledBarIndex].luminosity);
+      rgbData[i][ledBarIndex] = color;
+      rgb_txdata(rgbData[i], i);
+    }
+    for (size_t i = ledToLightCount; i < param_access->pixled.chanLedCount; ++i) {
+      rgbData[i][ledBarIndex] = 0x000000;
+      rgb_txdata(rgbData[i], i);
+    }
+  }
+
+  leddriver_refresh();
+}
+
+void bounce_led_and_travel(uint16_t *spectrumArray, unsigned int spectrumLength) {
+  for (size_t ledBarIndex = 0; ledBarIndex < LED_NCHANS; ++ledBarIndex) {
+    size_t intervalSize = spectrumLength / LED_NCHANS;
+    uint16_t barMax = 0;
+    unsigned int ledToLightCount = 0, firstLedToLight = get_first_led_to_light(ledBarIndex);
+
+    barMax = get_max_on_interval(spectrumArray, spectrumLength, ledBarIndex * intervalSize,
+                                 intervalSize);
+    barMax = apply_sensitivity(barMax, ledBarIndex) / 4;
+    ledToLightCount = get_led_to_light_count(barMax, ledBarIndex);
+
+    unsigned long hueShift = (long)(ledToLightCount - 1) * 4L *
+                             param_access->ledbar[ledBarIndex].hueInterval /
+                             (long)param_access->pixled.chanLedCount;
+    uint16_t hue = param_access->ledbar[ledBarIndex].hueBase + hueShift;
+    uint32_t color =
+        ColorHSV(hue * UINT16_MAX / HUEBASE_MAX, param_access->ledbar[ledBarIndex].saturation,
+                 param_access->ledbar[ledBarIndex].luminosity);
+
+    for (size_t i = 0; i < ledToLightCount; ++i) {
+      unsigned int ledIndex = firstLedToLight + i;
+      ledIndex = ledIndex < param_access->pixled.chanLedCount
+                     ? ledIndex
+                     : ledIndex - param_access->pixled.chanLedCount;
+      rgbData[ledIndex][ledBarIndex] = color;
+      rgb_txdata(rgbData[ledIndex], ledIndex);
+    }
+    for (size_t i = ledToLightCount; i < param_access->pixled.chanLedCount; ++i) {
+      unsigned int ledIndex = firstLedToLight + i;
+      ledIndex = ledIndex < param_access->pixled.chanLedCount
+                     ? ledIndex
+                     : ledIndex - param_access->pixled.chanLedCount;
+      rgbData[ledIndex][ledBarIndex] = 0x000000;
+      rgb_txdata(rgbData[ledIndex], ledIndex);
+    }
+  }
+
+  leddriver_refresh();
+}
+
+/***************************************************************************************************
+ * Internal Function Definitions
+ **************************************************************************************************/
+
+uint16_t get_max_on_interval(uint16_t *array, unsigned int length, size_t intervalMin,
+                             size_t intervalSize) {
+  uint16_t barMax = 0;
+  for (size_t i = 0; i < intervalSize; ++i) {
+    unsigned barIndex = intervalMin + i;
+    if (barMax < array[barIndex]) {
+      barMax = array[barIndex];
+    }
+  }
+  return barMax;
+}
+
+uint16_t apply_sensitivity(uint16_t value, unsigned int valueIndex) {
+  return value * param_access->auton.sensitivity * param_access->ledbar[valueIndex].sensitivity;
+}
+
+unsigned int get_led_to_light_count(uint16_t barValue, unsigned int barIndex) {
+  unsigned int nbLightedLed = lightedLedCountArray[barIndex];
+  unsigned int ledToLightCount = barValue * param_access->pixled.chanLedCount / UINT16_MAX;
+
+  if (ledToLightCount < nbLightedLed) {
+    /* apply gravity */
+    ledToLightCount = ((ledToLightCount * (100 - param_access->auton.gravity)) +
+                       (nbLightedLed * param_access->auton.gravity)) /
+                      100;
+  }
+  lightedLedCountArray[barIndex] = ledToLightCount;
+  return ledToLightCount;
+}
+
+unsigned int get_first_led_to_light(unsigned int barIndex) {
+  unsigned int firstLed = baseLedIndexArray[barIndex];
+  if (lightedLedCountArray[barIndex] != 0) {
+    firstLed += lightedLedCountArray[barIndex] / 4 + 1;
+    firstLed = firstLed < param_access->pixled.chanLedCount
+                   ? firstLed
+                   : firstLed - param_access->pixled.chanLedCount;
+  }
+  baseLedIndexArray[barIndex] = firstLed;
+  return firstLed;
+}
\ No newline at end of file
diff --git a/RpiLedBars/src/rpi_pattern.h b/RpiLedBars/src/rpi_pattern.h
new file mode 100644
index 0000000..43fd6fa
--- /dev/null
+++ b/RpiLedBars/src/rpi_pattern.h
@@ -0,0 +1,57 @@
+/** \file .h
+ *  \brief This module
+ */
+
+#if !defined(__RPI_PATTERN_H__)
+#define __RPI_PATTERN_H__
+
+/***************************************************************************************************
+ * Includes
+ **************************************************************************************************/
+
+#include <stdint.h>
+
+/***************************************************************************************************
+ * Preprocessor Constants and Macros
+ **************************************************************************************************/
+
+/***************************************************************************************************
+ * Type and Contant Definitions
+ **************************************************************************************************/
+
+/***************************************************************************************************
+ * Global Variables
+ **************************************************************************************************/
+
+/***************************************************************************************************
+ * External Function Prototypes
+ **************************************************************************************************/
+
+/**
+ * \brief
+ *
+ * \param[in] spectrumArray array of value from spectral analysis
+ *
+ * \param[in] spectrumLength length of spectrum array
+ */
+void bounce_led_and_color(uint16_t *spectrumArray, unsigned int spectrumLength);
+
+/**
+ * \brief
+ *
+ * \param[in] spectrumArray array of value from spectral analysis
+ *
+ * \param[in] spectrumLength length of spectrum array
+ */
+void bounce_led(uint16_t *spectrumArray, unsigned int spectrumLength);
+
+/**
+ * \brief
+ *
+ * \param[in] spectrumArray array of value from spectral analysis
+ *
+ * \param[in] spectrumLength length of spectrum array
+ */
+void bounce_led_and_travel(uint16_t *spectrumArray, unsigned int spectrumLength);
+
+#endif /* __RPI_PATTERN_H__ */
\ No newline at end of file