diff --git a/SAPIForVOICEVOX/SAPIForVOICEVOX.csproj b/SAPIForVOICEVOX/SAPIForVOICEVOX.csproj
index 3efbc74..e066f1f 100644
--- a/SAPIForVOICEVOX/SAPIForVOICEVOX.csproj
+++ b/SAPIForVOICEVOX/SAPIForVOICEVOX.csproj
@@ -56,8 +56,12 @@
     <ErrorReport>prompt</ErrorReport>
   </PropertyGroup>
   <ItemGroup>
+    <Reference Include="Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <HintPath>..\packages\Newtonsoft.Json.13.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
+    <Reference Include="System.Numerics" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="Microsoft.CSharp" />
@@ -92,6 +96,7 @@
     </EmbeddedResource>
   </ItemGroup>
   <ItemGroup>
+    <None Include="packages.config" />
     <None Include="ボイスボックスと通信ができません.wav" />
   </ItemGroup>
   <ItemGroup>
diff --git a/SAPIForVOICEVOX/VoiceVoxTTSEngine.cs b/SAPIForVOICEVOX/VoiceVoxTTSEngine.cs
index a800722..5d2dea0 100644
--- a/SAPIForVOICEVOX/VoiceVoxTTSEngine.cs
+++ b/SAPIForVOICEVOX/VoiceVoxTTSEngine.cs
@@ -9,6 +9,8 @@
 using System.Net.Http;
 using System.Runtime.CompilerServices;
 using System.Diagnostics;
+using Newtonsoft.Json.Linq;
+using Newtonsoft.Json;
 
 namespace SAPIForVOICEVOX
 {
@@ -85,9 +87,22 @@ public void Speak(uint dwSpeakFlags, ref Guid rguidFormatId, ref WAVEFORMATEX pW
             SPVTEXTFRAG currentTextList = pTextFragList;
             while (true)
             {
+                pOutputSite.GetRate(out int tempInt);
+                //SAPIは0が真ん中
+                double speed;
+                if (tempInt < 0)
+                {
+                    speed = Map(tempInt, -10, 0, 0.5, 1.0);
+                }
+                else
+                {
+                    speed = Map(tempInt, 0, 10, 1.0, 2.0);
+                }
+                pOutputSite.GetVolume(out ushort tempUshort);
+                double volume = Map(tempUshort, 0, 100, 0.0, 1.0);
                 //VOICEVOXへ送信
                 //asyncメソッドにはref引数を指定できないらしいので、awaitも使用できない。awaitを使用しない実装にした。
-                Task<byte[]> waveDataTask = SendToVoiceVox(currentTextList.pTextStart, SpeakerNumber);
+                Task<byte[]> waveDataTask = SendToVoiceVox(currentTextList.pTextStart, SpeakerNumber, speed, 0, volume);
                 waveDataTask.Wait();
                 byte[] waveData = waveDataTask.Result;
 
@@ -250,8 +265,11 @@ public static void UnregisterClass(string key)
         /// </summary>
         /// <param name="text">セリフ</param>
         /// <param name="speakerNum">話者番号</param>
+        /// <param name="speedScale">話速 0.5~2.0 中央=1</param>
+        /// <param name="pitchScale">音高 -0.15~0.15 中央=0</param>
+        /// <param name="volumeScale">音量 0.0~1.0</param>
         /// <returns>waveデータ</returns>
-        async Task<byte[]> SendToVoiceVox(string text, int speakerNum)
+        async Task<byte[]> SendToVoiceVox(string text, int speakerNum, double speedScale, double pitchScale, double volumeScale)
         {
             //エンジンが起動中か確認を行う
             Process[] ps = Process.GetProcessesByName("run");
@@ -282,8 +300,15 @@ async Task<byte[]> SendToVoiceVox(string text, int speakerNum)
                     //戻り値を文字列にする
                     string resBodyStr = await resultAudioQuery.Content.ReadAsStringAsync();
 
+                    //jsonの値変更
+                    JObject jsonObj = JObject.Parse(resBodyStr);
+                    jsonObj["speedScale"] = speedScale;
+                    jsonObj["pitchScale"] = pitchScale;
+                    jsonObj["volumeScale"] = volumeScale;
+                    string jsonString = JsonConvert.SerializeObject(jsonObj, Formatting.None);
+
                     //jsonコンテンツに変換
-                    var content = new StringContent(resBodyStr, Encoding.UTF8, @"application/json");
+                    var content = new StringContent(jsonString, Encoding.UTF8, @"application/json");
                     //synthesis送信
                     using (var resultSynthesis = await httpClient.PostAsync(@"http://localhost:50021/synthesis?speaker=" + speakerString, content))
                     {
@@ -305,5 +330,18 @@ async Task<byte[]> SendToVoiceVox(string text, int speakerNum)
             }
         }
 
+        /// <summary>
+        ///  数値をある範囲から別の範囲に変換します。
+        /// </summary>
+        /// <param name="x">変換したい数値</param>
+        /// <param name="in_min">現在の範囲の下限</param>
+        /// <param name="in_max">現在の範囲の上限</param>
+        /// <param name="out_min">変換後の範囲の下限</param>
+        /// <param name="out_max">変換後の範囲の上限</param>
+        /// <returns>変換結果</returns>
+        double Map(double x, double in_min, double in_max, double out_min, double out_max)
+        {
+            return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
+        }
     }
 }
diff --git a/SAPIForVOICEVOX/packages.config b/SAPIForVOICEVOX/packages.config
new file mode 100644
index 0000000..d7b227b
--- /dev/null
+++ b/SAPIForVOICEVOX/packages.config
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net471" />
+</packages>
\ No newline at end of file