diff --git a/main.py b/main.py
index 09d4e5d..8fa26d5 100644
--- a/main.py
+++ b/main.py
@@ -3,6 +3,7 @@ import pygame.gfxdraw
 from PIL import Image
 import random
 from math import cos, sin
+#import time
 
 ##### CONFIG #####
 window_size = (1280, 720)
@@ -10,7 +11,7 @@ window_size = (1280, 720)
 fps = 60
 
 # pixel size in percentage of window height (0.0 - 1.0)
-pixel_size = 0.018
+pixel_size = 0.015
 
 # min and max distance from screen edge to pixel in window height percentage (0.0 - 1.0)
 min_distribution_edge_dist = 0.1
@@ -29,11 +30,17 @@ stiffness = 40
 # 0.0 - 1.0
 damping = 0.08
 
+
+audio = True
+
 ##################
 
+if audio:
+    import playsound
+
 damping_multiplier = 1 - damping
 
-target_delta_time = 1 / fps
+delta_time = 1 / fps
 
 half_window_size = (window_size[0] / 2, window_size[1] / 2)
 
@@ -110,19 +117,22 @@ pygame.init()
 window = pygame.display.set_mode(window_size)
 clock = pygame.time.Clock()
 
+# font
+font = pygame.font.SysFont("Arial", 20)
+
 
 
 ############# another config stuff ##############
 
 rot_zoom_delay = 6
 rot_speed_increase = 0.2
-zoom_speed_increase = 0.8
+zoom_speed_increase = 2
 
 
 zoom_speed = 0.04
 
-fade_delay = 2.5
-fade_speed = 255*3
+fade_delay = 1.6
+fade_speed = 255*4
 
 
 zoom = 1
@@ -137,6 +147,9 @@ angle = 0
 can_rot = False
 
 
+#time_start = time.perf_counter() + 1
+
+
 # main loop
 while True:
     # events
@@ -149,13 +162,14 @@ while True:
     window.fill((0, 0, 0))
 
     if fade_val > 0:
-        if rot_zoom_delay > 0:
-            rot_zoom_delay -= target_delta_time
-        else: # zooming more and rotating
-            rot_speed += rot_speed_increase * target_delta_time
-            zoom_speed += zoom_speed_increase * target_delta_time
 
-            angle += rot_speed * target_delta_time
+        if rot_zoom_delay > 0:
+            rot_zoom_delay -= delta_time
+        else: # zooming more and rotating
+            rot_speed += rot_speed_increase * delta_time
+            zoom_speed += zoom_speed_increase * delta_time
+
+            angle += rot_speed * delta_time
 
             # rotate and zoom
             rot_cos = cos(angle)
@@ -166,13 +180,13 @@ while True:
 
             # fade
             if fade_delay > 0:
-                fade_delay -= target_delta_time
+                fade_delay -= delta_time
             else:
-                fade_val -= fade_speed * target_delta_time
+                fade_val -= fade_speed * delta_time
                 if fade_val < 0:
                     continue
 
-        zoom *= 1 + zoom_speed * target_delta_time
+        zoom *= 1 + zoom_speed * delta_time
 
         # calculate pixel points positions
         scaled_pixel_size_px = pixel_size_px * zoom
@@ -209,10 +223,14 @@ while True:
         for pixel_idx, pixel in enumerate(pixels_pos_and_vel):
             # check if delay is over
             if pixel[2] > 0:
-                pixel[2] -= target_delta_time
+                pixel[2] -= delta_time
                 continue
 
-            ## simulation (take target_delta_time into account)
+            if audio:
+                playsound.playsound("prototype_sound.wav", False)
+                audio = False
+
+            ## simulation (take delta_time into account)
 
             # get pixel pos and vel
             pos = pixel[0]
@@ -222,16 +240,16 @@ while True:
             delta_pos = [pixels_target_pos[pixel_idx][0] - pos[0], pixels_target_pos[pixel_idx][1] - pos[1]]
 
             # update velocity
-            vel[0] += delta_pos[0] * stiffness * target_delta_time
-            vel[1] += delta_pos[1] * stiffness * target_delta_time
+            vel[0] += delta_pos[0] * stiffness * delta_time
+            vel[1] += delta_pos[1] * stiffness * delta_time
 
             # damping
             vel[0] *= damping_multiplier
             vel[1] *= damping_multiplier
 
             # update pos
-            pos[0] += vel[0] * target_delta_time
-            pos[1] += vel[1] * target_delta_time
+            pos[0] += vel[0] * delta_time
+            pos[1] += vel[1] * delta_time
 
             # update pixel pos and vel
             pixels_pos_and_vel[pixel_idx][0:2] = [pos, vel]
@@ -283,8 +301,14 @@ while True:
             # DEBUG draw dot
             #pygame.draw.circle(window, (255, 0, 0), (round(pixel_draw_pos[0]), round(pixel_draw_pos[1])), 1)
 
+    #time_now = time.perf_counter()
+    #time_delta = time_now - time_start
+#
+    ## draw time
+    #text = font.render(f"Time: {time_delta:.2f}", True, (255, 255, 255))
+    #window.blit(text, (10, 10))
 
 
     # update
     pygame.display.update()
-    clock.tick(60)
\ No newline at end of file
+    delta_time = clock.tick(60) / 1000
\ No newline at end of file
diff --git a/prototype_sound.wav b/prototype_sound.wav
new file mode 100644
index 0000000..ccdf76c
Binary files /dev/null and b/prototype_sound.wav differ