diff --git a/src/JT1078.Flv.Test/Audio/AudioTest.cs b/src/JT1078.Flv.Test/Audio/AudioTest.cs
new file mode 100644
index 0000000..0548dc8
--- /dev/null
+++ b/src/JT1078.Flv.Test/Audio/AudioTest.cs
@@ -0,0 +1,62 @@
+using JT1078.Flv.Audio;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using System.Text;
+using Xunit;
+using Xunit.Abstractions;
+
+namespace JT1078.Flv.Test.Audio
+{
+    public class AudioTest
+    {
+        readonly ITestOutputHelper output;
+
+        public AudioTest(ITestOutputHelper output)
+        {
+            this.output = output;
+        }
+
+        /// <summary>
+        /// 8000采样，单通道，16位pcm->aac
+        /// <para>8k-1ch-16bit</para>
+        /// </summary>
+        [Fact(DisplayName = "pcm编码aac")]
+        public void Test1()
+        {
+            ReadOnlySpan<byte> fileData = File.ReadAllBytes(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, $"Audio/Files/testpacket.pcm"));
+            //注意 这里为了可以判断音频是否可用，因此使用adts，当网络传输的时候不应该使用adts
+            var faac = new FaacEncoder(8000, 1, 16, true);
+            var path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, @"Audio\Files\testpacket.aac");
+            if (File.Exists(path)) File.Delete(path);
+            output.WriteLine(path);
+            var offset = 0;
+            var step = faac.frameSize;
+            var totalBytes = 0;
+            var stopwatch = new Stopwatch();
+            while (offset + step < fileData.Length)
+            {
+                stopwatch.Start();
+                var aacBuff = faac.Encode(fileData.Slice(offset, step).ToArray());
+                stopwatch.Stop();
+                if (aacBuff.Any())
+                    aacBuff.AppendBytesToFile(path);
+                offset += step;
+                totalBytes += aacBuff.Length;
+            }
+            faac.Dispose();
+            output.WriteLine($"已编码字节数：{offset}，剩余未编码字节数：{fileData.Length - offset}，编码后字节数：{totalBytes}，耗时：{stopwatch.Elapsed.Milliseconds}毫秒");
+        }
+    }
+    static class Ex
+    {
+        public static void AppendBytesToFile(this byte[] fileBytes, string fileName)
+        {
+            FileStream fileStream = new FileStream(fileName, FileMode.Append);
+            fileStream.Write(fileBytes, 0, fileBytes.Length);
+            fileStream.Close();
+        }
+    }
+}
diff --git a/src/JT1078.Flv.Test/Audio/Files/testpacket.pcm b/src/JT1078.Flv.Test/Audio/Files/testpacket.pcm
new file mode 100644
index 0000000..69c24b1
Binary files /dev/null and b/src/JT1078.Flv.Test/Audio/Files/testpacket.pcm differ
diff --git a/src/JT1078.Flv.Test/JT1078.Flv.Test.csproj b/src/JT1078.Flv.Test/JT1078.Flv.Test.csproj
index 508f4dc..938f334 100644
--- a/src/JT1078.Flv.Test/JT1078.Flv.Test.csproj
+++ b/src/JT1078.Flv.Test/JT1078.Flv.Test.csproj
@@ -33,6 +33,9 @@
     </None>
   </ItemGroup>
   <ItemGroup>
+    <None Update="Audio\Files\testpacket.pcm">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
     <None Update="H264\index.html">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </None>
@@ -48,6 +51,9 @@
     <None Update="H264\JT1078_3.txt">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </None>
+    <None Update="Libs\libfaac.dll">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
   </ItemGroup>
 
 </Project>
diff --git a/src/JT1078.Flv.Test/Libs/libfaac.dll b/src/JT1078.Flv.Test/Libs/libfaac.dll
new file mode 100644
index 0000000..a67c71f
Binary files /dev/null and b/src/JT1078.Flv.Test/Libs/libfaac.dll differ
diff --git a/src/JT1078.Flv/JT1078.Flv.csproj b/src/JT1078.Flv/JT1078.Flv.csproj
index 1cfddf8..c5ef381 100644
--- a/src/JT1078.Flv/JT1078.Flv.csproj
+++ b/src/JT1078.Flv/JT1078.Flv.csproj
@@ -46,7 +46,7 @@
   </ItemGroup>
   <ItemGroup>
     <None Update="Libs\libfaac.dll">
-      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>
   </ItemGroup>
 </Project>
diff --git a/src/JT1078.Flv/Libs/libfaac.dll b/src/JT1078.Flv/Libs/libfaac.dll
index c9f2e45..a67c71f 100644
Binary files a/src/JT1078.Flv/Libs/libfaac.dll and b/src/JT1078.Flv/Libs/libfaac.dll differ