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Src/Unity/Scripts/AudioClip/AudioClipUtils.cs

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+using System.IO;
+using UnityEngine;
+
+namespace Net.BITKit
+{
+    public static class AudioClipUtils
+    {
+        public static byte[] AudioClipToWavBytes(AudioClip clip)
+        {
+            var samples = new float[clip.samples * clip.channels];
+            clip.GetData(samples, 0);
+
+            var wavData = ConvertToWav(samples, clip.channels, clip.frequency);
+            return wavData;
+        }
+
+        private static byte[] ConvertToWav(float[] samples, int channels, int sampleRate)
+        {
+            var stream = new MemoryStream();
+            var writer = new BinaryWriter(stream);
+
+            var byteRate = sampleRate * channels * 2;
+
+            // 写入 WAV 文件头
+            writer.Write(System.Text.Encoding.ASCII.GetBytes("RIFF"));
+            writer.Write(0); // placeholder for total file size
+            writer.Write(System.Text.Encoding.ASCII.GetBytes("WAVE"));
+
+            // fmt 块
+            writer.Write(System.Text.Encoding.ASCII.GetBytes("fmt "));
+            writer.Write(16); // PCM
+            writer.Write((short)1); // AudioFormat = PCM
+            writer.Write((short)channels);
+            writer.Write(sampleRate);
+            writer.Write(byteRate);
+            writer.Write((short)(channels * 2)); // Block align
+            writer.Write((short)16); // Bits per sample
+
+            // data 块
+            writer.Write(System.Text.Encoding.ASCII.GetBytes("data"));
+            writer.Write(0); // placeholder for data chunk size
+
+            // 写入样本
+            var sampleCount = samples.Length;
+            for (var i = 0; i < sampleCount; i++)
+            {
+                var intData = (short)(samples[i] * short.MaxValue);
+                writer.Write(intData);
+            }
+
+            // 回写文件长度
+            writer.Seek(4, SeekOrigin.Begin);
+            writer.Write((int)(stream.Length - 8)); // RIFF size
+
+            writer.Seek(40, SeekOrigin.Begin);
+            writer.Write((int)(stream.Length - 44)); // data chunk size
+
+            writer.Flush();
+            return stream.ToArray();
+        }
+    }
+
+
+}