using System; using System.Collections; using System.Collections.Generic; using System.IO; using System.Text; using UnityEngine; using UnityEngine.UI; public class Recording : MonoBehaviour { private int Frequency = 16000; //录音频率 private int MicSecond = 300; //保存300秒内的音频(超出则重新开始录制) public Button bStart; public Button bStop; public Button bPlay; public Text tTip; public AudioSource au; private string device; private string recordPath=""; void Awake() { if (File.Exists("Config/recordPath")) { StreamReader file = new StreamReader("Config/recordPath", Encoding.UTF8); recordPath = file.ReadLine().Trim(); file.Close(); } } void Start() { device = Microphone.devices[0]; bStart.onClick.AddListener(OnStartClick); bStop.onClick.AddListener(OnStopClick); bPlay.onClick.AddListener(OnPlayClick); } int recordLength = 0; DateTime sTime; void OnStartClick() { tTip.text += "\n开始录音...."; au.Stop(); au.loop = false; au.mute = true; au.clip = Microphone.Start(device, true, MicSecond, Frequency); sTime = DateTime.Now; } void OnStopClick() { tTip.text += "\n停止录音!"; if (!Microphone.IsRecording(device)) return; Microphone.End(device); au.Stop(); TimeSpan sub = new TimeSpan(DateTime.Now.Ticks-sTime.Ticks); recordLength = sub.Seconds * Frequency; WavFromClip("test.wav", au.clip); //将录音保存为wav } void OnStopClick(string relativePath) { tTip.text += "\n停止录音!"; if (!Microphone.IsRecording(device)) return; Microphone.End(device); au.Stop(); TimeSpan sub = new TimeSpan(DateTime.Now.Ticks-sTime.Ticks); recordLength = sub.Seconds * Frequency; WavFromClip(recordPath+relativePath+".wav", au.clip); //将录音保存为wav } void OnPlayClick() { if (Microphone.IsRecording(device)) return; if (au.clip == null) return; au.mute = false; au.loop = false; au.Play(); tTip.text += "\n播放录音...."; } public void WavFromClip(string WavPosition, AudioClip clip) { if (Microphone.IsRecording(null)) return; Microphone.End(null); using (FileStream fs = CreateEmpty(WavPosition)) { ConvertAndWrite(fs, au.clip); WriteHeader(fs, au.clip); //wav文件头 } } private FileStream CreateEmpty(string filepath) { FileStream fileStream = new FileStream(filepath, FileMode.Create); byte emptyByte = new byte(); for (int i = 0; i < 44; i++) //为wav文件头留出空间 { fileStream.WriteByte(emptyByte); } return fileStream; } private void ConvertAndWrite(FileStream fileStream, AudioClip clip) { //Debug.Log("————————"+recordLength); float[] samples = new float[recordLength]; //float[] samples = new float[clip.samples]; clip.GetData(samples, 0); Int16[] intData = new Int16[samples.Length]; Byte[] bytesData = new Byte[samples.Length * 2]; int rescaleFactor = 32767; //to convert float to Int16 for (int i = 0; i < samples.Length; i++) { intData[i] = (short)(samples[i] * rescaleFactor); Byte[] byteArr = new Byte[2]; byteArr = BitConverter.GetBytes(intData[i]); byteArr.CopyTo(bytesData, i * 2); } fileStream.Write(bytesData, 0, bytesData.Length); } private void WriteHeader(FileStream stream, AudioClip clip) { int hz = clip.frequency; int channels = clip.channels; int samples = clip.samples; stream.Seek(0, SeekOrigin.Begin); Byte[] riff = System.Text.Encoding.UTF8.GetBytes("RIFF"); stream.Write(riff, 0, 4); Byte[] chunkSize = BitConverter.GetBytes(stream.Length - 8); stream.Write(chunkSize, 0, 4); Byte[] wave = System.Text.Encoding.UTF8.GetBytes("WAVE"); stream.Write(wave, 0, 4); Byte[] fmt = System.Text.Encoding.UTF8.GetBytes("fmt "); stream.Write(fmt, 0, 4); Byte[] subChunk1 = BitConverter.GetBytes(16); stream.Write(subChunk1, 0, 4); UInt16 two = 2; UInt16 one = 1; Byte[] audioFormat = BitConverter.GetBytes(one); stream.Write(audioFormat, 0, 2); Byte[] numChannels = BitConverter.GetBytes(channels); stream.Write(numChannels, 0, 2); Byte[] sampleRate = BitConverter.GetBytes(hz); stream.Write(sampleRate, 0, 4); Byte[] byteRate = BitConverter.GetBytes(hz * channels * 2); // sampleRate * bytesPerSample*number of channels, here 44100*2*2 stream.Write(byteRate, 0, 4); UInt16 blockAlign = (ushort)(channels * 2); stream.Write(BitConverter.GetBytes(blockAlign), 0, 2); UInt16 bps = 16; Byte[] bitsPerSample = BitConverter.GetBytes(bps); stream.Write(bitsPerSample, 0, 2); Byte[] datastring = System.Text.Encoding.UTF8.GetBytes("data"); stream.Write(datastring, 0, 4); Byte[] subChunk2 = BitConverter.GetBytes(samples * channels * 2); stream.Write(subChunk2, 0, 4); } }
保存其他格式需要插入相关的动态链接库