将short 转换为Stream，可以播放为Audio

所以我所拥有的是一个short []数组，它表示WAV文件的原始数据。 这意味着它不包含通常包含的任何页眉或页脚信息。 为了播放这个音频，我需要将它转换为某种类型的流，不幸的是，这个short []数组中的数据是Int16，并且许多值超过255，因此无法转换为字节且无法转换为流。 有谁知道我怎么能播放这个音频数据？

Answer 1

您可以将短数组转换回字节数组：

short[] sampleData = ... byte[] byteArray = new byte[sampleData.Length*2]; Buffer.BlockCopy(sampleData , 0, byteArray, 0, byteArray.Length); 

然后，您可以使用下面的WaveMemoryStream类创建波流 – 为此您需要知道样本数据的波形格式。 然后，该流可以保存为WAV文件或由SoundPlayer 。

 public class WaveMemoryStream : Stream { public override bool CanSeek { get { return false; } } public override bool CanWrite { get { return false; } } public override bool CanRead { get { return true; } } public override long Length { get { return _waveStream.Length; } } public override long Position { get { return _waveStream.Position; } set { _waveStream.Position = value; } } private MemoryStream _waveStream; public WaveMemoryStream(byte[] sampleData, int audioSampleRate, ushort audioBitsPerSample, ushort audioChannels) { _waveStream = new MemoryStream(); WriteHeader(_waveStream, sampleData.Length, audioSampleRate, audioBitsPerSample, audioChannels); WriteSamples(_waveStream, sampleData); _waveStream.Position = 0; } public void WriteHeader(Stream stream, int length, int audioSampleRate, ushort audioBitsPerSample, ushort audioChannels) { BinaryWriter bw = new BinaryWriter(stream); bw.Write(new char[4] { 'R', 'I', 'F', 'F' }); int fileSize = 36 + length; bw.Write(fileSize); bw.Write(new char[8] { 'W', 'A', 'V', 'E', 'f', 'm', 't', ' ' }); bw.Write((int)16); bw.Write((short)1); bw.Write((short)audioChannels); bw.Write(audioSampleRate); bw.Write((int)(audioSampleRate * ((audioBitsPerSample * audioChannels) / 8))); bw.Write((short)((audioBitsPerSample * audioChannels) / 8)); bw.Write((short)audioBitsPerSample); bw.Write(new char[4] { 'd', 'a', 't', 'a' }); bw.Write(length); } public void WriteSamples(Stream stream, byte[] sampleData) { BinaryWriter bw = new BinaryWriter(stream); bw.Write(sampleData, 0, sampleData.Length); } public override int Read(byte[] buffer, int offset, int count) { return _waveStream.Read(buffer, offset, count); } public virtual void WriteTo(Stream stream) { int bytesRead = 0; byte[] buffer = new byte[8192]; do { bytesRead = Read(buffer, 0, buffer.Length); stream.Write(buffer, 0, bytesRead); } while (bytesRead > 0); stream.Flush(); } public override void Flush() { _waveStream.Flush(); } public override long Seek(long offset, SeekOrigin origin) { return _waveStream.Seek(offset, origin); } public override void SetLength(long value) { throw new NotImplementedException(); } public override void Write(byte[] buffer, int offset, int count) { throw new NotImplementedException(); } }