diff --git a/Assets/uLipSync/Editor/Preference.cs b/Assets/uLipSync/Editor/Preference.cs
index d34794f..1f45968 100644
--- a/Assets/uLipSync/Editor/Preference.cs
+++ b/Assets/uLipSync/Editor/Preference.cs
@@ -8,12 +8,14 @@ internal class EditorPrefsStr
 {
     public const string DisplayWaveformOnTimeline = "uLipSync-Timeline-DisplayWaveform";
     public const string MaxWidthOfWaveformTextureOnTimeline = "uLipSync-Timeline-MaxWidthOfWaveformTexture";
+    public const string TextureSmoothOnTimeline = "uLipSync-Timeline-TextureSmooth";
 }
 
 internal class EditorPrefsDefault
 {
     public const int MinWidthOfWaveformTextureOnTimeline = 32;
     public const int MaxWidthOfWaveformTextureOnTimeline = 2048;
+    public const float TextureSmoothOnTimeline = 0.85f;
 }
 
 public static class Preference
@@ -31,6 +33,12 @@ public static int maxWidthOfWaveformTextureOnTimeline
         get => EditorPrefs.GetInt(EditorPrefsStr.MaxWidthOfWaveformTextureOnTimeline, EditorPrefsDefault.MaxWidthOfWaveformTextureOnTimeline);
         set => EditorPrefs.SetInt(EditorPrefsStr.MaxWidthOfWaveformTextureOnTimeline, value);
     }
+    
+    public static float textureSmoothOnTimeline
+    {
+        get => EditorPrefs.GetFloat(EditorPrefsStr.TextureSmoothOnTimeline, EditorPrefsDefault.TextureSmoothOnTimeline);
+        set => EditorPrefs.SetFloat(EditorPrefsStr.TextureSmoothOnTimeline, value);
+    }
 }
 
 public class PreferenceProvider : SettingsProvider
@@ -72,6 +80,15 @@ public override void OnGUI(string searchContext)
             }
         }
         
+        {
+            float current = Preference.textureSmoothOnTimeline;
+            float result = EditorGUILayout.FloatField("Texture Smoothness On Timeline", current);
+            if (Math.Abs(current - result) > 0f)
+            {
+                Preference.textureSmoothOnTimeline = Math.Clamp(result, 0f, 1f);
+            }
+        }
+        
         --EditorGUI.indentLevel;
         
         EditorGUIUtility.labelWidth = defaultLabelWidth;
diff --git a/Assets/uLipSync/Editor/Timeline/uLipSyncClipEditor.cs b/Assets/uLipSync/Editor/Timeline/uLipSyncClipEditor.cs
index 6674924..4c28659 100644
--- a/Assets/uLipSync/Editor/Timeline/uLipSyncClipEditor.cs
+++ b/Assets/uLipSync/Editor/Timeline/uLipSyncClipEditor.cs
@@ -92,7 +92,8 @@ Texture2D CreateCachedTexture(uLipSyncClip clip, int width, int height)
             width, 
             Preference.minWidthOfWaveformTextureOnTimeline,
             Preference.maxWidthOfWaveformTextureOnTimeline);
-        var tex = TextureCreator.CreateBakedDataWaveTexture(data, width, height);
+        var smooth = Preference.textureSmoothOnTimeline;
+        var tex = TextureCreator.CreateBakedDataWaveTexture(data, width, height, smooth);
         var cache = new TextureCache { texture = tex };
         _textures.Add(clip, cache);
 
diff --git a/Assets/uLipSync/Runtime/Core/TextureCreator.cs b/Assets/uLipSync/Runtime/Core/TextureCreator.cs
index 2ad1d3e..897e899 100644
--- a/Assets/uLipSync/Runtime/Core/TextureCreator.cs
+++ b/Assets/uLipSync/Runtime/Core/TextureCreator.cs
@@ -1,3 +1,4 @@
+using System;
 using UnityEngine;
 using Unity.Burst;
 using Unity.Collections;
@@ -55,7 +56,7 @@ public void Execute()
                     targetColor += phonemeColors[colorIndex] * phonemeRatios[ratioIndex];
                 }
 
-                currentColor += (targetColor - currentColor) * smooth;
+                currentColor += (targetColor - currentColor) * (1f - smooth);
 
                 for (int y = 0; y < height; ++y)
                 {
@@ -71,7 +72,7 @@ public void Execute()
         }
     }
 
-    public static Texture2D CreateBakedDataWaveTexture(BakedData data, int width, int height)
+    public static Texture2D CreateBakedDataWaveTexture(BakedData data, int width, int height, float smooth = 0.85f)
     {
         var tex = new Texture2D(width, height);
 
@@ -104,7 +105,7 @@ public static Texture2D CreateBakedDataWaveTexture(BakedData data, int width, in
             width = width,
             height = height,
             phonemeCount = phonemeCount,
-            smooth = 0.15f,
+            smooth = Mathf.Clamp(smooth, 0f, 1f),
         };
         job.Schedule().Complete();