好久没有更新文章了，今天我们继续更新科大讯飞的语音的文章。

之前在语音合成部分由于在线语音合成的处理时间太长，所以使用了C#自带的语音合成，处理是快了，但是合成的声音特别难听。

所以今天更新一个离先语音合成的文章。

废话不多说，直接进入正题。

1.下载语音合成SDK，需要选择离线的，否者无法使用离线的。

2.解压SDK，这里我们需要用到common.jet；xiaofeng.jet；xiaoyan.jet这三个.jet文件必须要，缺一不可，否则会报错误代码：文件缺失。然后就是msc_x64.dll库。

3.代码部分

using UnityEngine;using msc;using System;using System.Text;using System.IO;using System.Runtime.InteropServices;using System.Threading;using working;using System.Collections;public class Main : MonoBehaviour{private const string speekText = "北京市今天全天晴，气温7℃ ~ 19℃，空气质量优，有北风4-5级，挺凉快的。";private const string session_begin_params = "voice_name = xiaoyan, text_encoding = utf8, sample_rate = 16000, speed = 50, volume = 50, pitch = 50, rdn = 0";private string offline_session_begin_params;private IntPtr session_id;private int err_code;private byte[] bytes;private void Awake(){string xiaoyan_path = (Application.dataPath + "/TTS/xiaoyan.jet").Replace("/", "\\");string common_path = (Application.dataPath + "/TTS/common.jet").Replace("/", "\\");offline_session_begin_params = "engine_type = local, voice_name = xiaoyan, text_encoding = utf8, tts_res_path = fo|" + xiaoyan_path + ";fo|" + common_path + ", sample_rate = 16000, speed = 50, volume = 50, pitch = 50, rdn = 0";}private void Start(){int message = MSCDLL.MSPLogin("", "", "appid=5f80198b,word_dir= . ");if (message != (int)Errors.MSP_SUCCESS){Debug.LogError("登录失败！错误信息：" + message);}Debug.Log("登录成功");}private void Update(){if (Input.GetMouseButtonDown(0)){//Online_TTS(speekText);Offline_TTS(speekText);}}private void Online_TTS(string speekText){//语音合成开始session_id = MSCDLL.QTTSSessionBegin(session_begin_params, ref err_code);if (err_code != (int)Errors.MSP_SUCCESS){Debug.LogError("初始化语音合成失败，错误信息：" + err_code);return;}//语音合成设置文本err_code = MSCDLL.QTTSTextPut(session_id, speekText, (uint)Encoding.Default.GetByteCount(speekText), string.Empty);if (err_code != (int)Errors.MSP_SUCCESS){Debug.LogError("向服务器发送数据失败，错误信息：" + err_code);return;}uint audio_len = 0;SynthStatus synth_status = SynthStatus.MSP_TTS_FLAG_STILL_HAVE_DATA;MemoryStream memoryStream = new MemoryStream();memoryStream.Write(new byte[44], 0, 44);while (true){IntPtr source = MSCDLL.QTTSAudioGet(session_id, ref audio_len, ref synth_status, ref err_code);byte[] array = new byte[audio_len];if (audio_len > 0){Marshal.Copy(source, array, 0, (int)audio_len);}memoryStream.Write(array, 0, array.Length);Thread.Sleep(100);if (synth_status == SynthStatus.MSP_TTS_FLAG_DATA_END || err_code != (int)Errors.MSP_SUCCESS)break;}err_code = MSCDLL.QTTSSessionEnd(session_id, "");if (err_code != (int)Errors.MSP_SUCCESS){Debug.LogError("会话结束失败！错误信息: " + err_code);return;}WAVE_Header header = getWave_Header((int)memoryStream.Length - 44);//创建wav文件头byte[] headerByte = StructToBytes(header);//把文件头结构转化为字节数组memoryStream.Position = 0;//定位到文件头memoryStream.Write(headerByte, 0, headerByte.Length);//写入文件头bytes = memoryStream.ToArray();memoryStream.Close();if (Application.streamingAssetsPath + "/" + name + ".wav" != null){if (File.Exists(Application.streamingAssetsPath + "/" + name + ".wav"))File.Delete(Application.streamingAssetsPath + "/" + name + ".wav");File.WriteAllBytes(Application.streamingAssetsPath + "/" + name + ".wav", bytes);StartCoroutine(OnAudioLoadAndPaly(Application.streamingAssetsPath + "/" + name + ".wav", AudioType.WAV, gameObject.GetComponent<AudioSource>()));}Debug.Log("合成结束成功");}private void Offline_TTS(string speekText){//语音合成开始session_id = MSCDLL.QTTSSessionBegin(offline_session_begin_params, ref err_code);if (err_code != (int)Errors.MSP_SUCCESS){Debug.LogError("初始化语音合成失败，错误信息：" + err_code);return;}//语音合成设置文本err_code = MSCDLL.QTTSTextPut(session_id, speekText, (uint)Encoding.Default.GetByteCount(speekText), string.Empty);if (err_code != (int)Errors.MSP_SUCCESS){Debug.LogError("向服务器发送数据失败，错误信息：" + err_code);return;}uint audio_len = 0;SynthStatus synth_status = SynthStatus.MSP_TTS_FLAG_STILL_HAVE_DATA;MemoryStream memoryStream = new MemoryStream();memoryStream.Write(new byte[44], 0, 44);while (true){IntPtr source = MSCDLL.QTTSAudioGet(session_id, ref audio_len, ref synth_status, ref err_code);byte[] array = new byte[audio_len];if (audio_len > 0){Marshal.Copy(source, array, 0, (int)audio_len);}memoryStream.Write(array, 0, array.Length);Thread.Sleep(1);if (synth_status == SynthStatus.MSP_TTS_FLAG_DATA_END || err_code != (int)Errors.MSP_SUCCESS)break;}err_code = MSCDLL.QTTSSessionEnd(session_id, "");if (err_code != (int)Errors.MSP_SUCCESS){Debug.LogError("会话结束失败！错误信息: " + err_code);return;}WAVE_Header header = getWave_Header((int)memoryStream.Length - 44);//创建wav文件头byte[] headerByte = StructToBytes(header);//把文件头结构转化为字节数组memoryStream.Position = 0;//定位到文件头memoryStream.Write(headerByte, 0, headerByte.Length);//写入文件头bytes = memoryStream.ToArray();memoryStream.Close();if (Application.streamingAssetsPath + "/" + name + ".wav" != null){if (File.Exists(Application.streamingAssetsPath + "/" + name + ".wav"))File.Delete(Application.streamingAssetsPath + "/" + name + ".wav");File.WriteAllBytes(Application.streamingAssetsPath + "/" + name + ".wav", bytes);StartCoroutine(OnAudioLoadAndPaly(Application.streamingAssetsPath + "/" + name + ".wav", AudioType.WAV, gameObject.GetComponent<AudioSource>()));}Debug.Log("合成结束成功");}/// <summary>/// 结构体转字符串/// </summary>/// <param name="structure"></param>/// <returns></returns>private byte[] StructToBytes(object structure){int num = Marshal.SizeOf(structure);IntPtr intPtr = Marshal.AllocHGlobal(num);byte[] result;try{Marshal.StructureToPtr(structure, intPtr, false);byte[] array = new byte[num];Marshal.Copy(intPtr, array, 0, num);result = array;}finally{Marshal.FreeHGlobal(intPtr);}return result;}/// <summary>/// 结构体初始化赋值/// </summary>/// <param name="data_len"></param>/// <returns></returns>private WAVE_Header getWave_Header(int data_len){return new WAVE_Header{RIFF_ID = 1179011410,File_Size = data_len + 36,RIFF_Type = 1163280727,FMT_ID = 544501094,FMT_Size = 16,FMT_Tag = 1,FMT_Channel = 1,FMT_SamplesPerSec = 16000,AvgBytesPerSec = 32000,BlockAlign = 2,BitsPerSample = 16,DATA_ID = 1635017060,DATA_Size = data_len};}/// <summary>/// 语音音频头/// </summary>private struct WAVE_Header{public int RIFF_ID;public int File_Size;public int RIFF_Type;public int FMT_ID;public int FMT_Size;public short FMT_Tag;public ushort FMT_Channel;public int FMT_SamplesPerSec;public int AvgBytesPerSec;public ushort BlockAlign;public ushort BitsPerSample;public int DATA_ID;public int DATA_Size;}/// <summary>/// UnityWebRequest 加载音频播放/// </summary>/// <param name="url">路径</param>/// <param name="type">音频格式</param>/// <param name="audio">音频</param>/// <returns></returns>public IEnumerator OnAudioLoadAndPaly(string url, AudioType type, AudioSource audio){UnityWebRequest www = UnityWebRequestMultimedia.GetAudioClip(url, type);yield return www.SendWebRequest();if (www.isHttpError || www.isNetworkError)Debug.LogError(www.error);else{AudioClip clip = DownloadHandlerAudioClip.GetContent(www);audio.clip = clip;audio.Play();}}private void OnDestroy(){MSCDLL.MSPLogout();Debug.Log("注销成功");}}

4.在线参数和离线参数区别

///在线参数session_begin_params = "voice_name = xiaoyan, text_encoding = utf8, sample_rate = 16000, speed = 50, volume = 50, pitch = 50, rdn = 0";///离线参数string xiaoyan_path = (Application.dataPath + "/TTS/xiaoyan.jet").Replace("/", "\\");//这个斜杠更换前面的文章有说过，这里就不说了string common_path = (Application.dataPath + "/TTS/common.jet").Replace("/", "\\");//不更换会报参数信息错误的问题session_begin_params = "engine_type = local, voice_name = xiaoyan, text_encoding = utf8, tts_res_path = fo|" + xiaoyan_path + ";fo|" + common_path + ", sample_rate = 16000, speed = 50, volume = 50, pitch = 50, rdn = 0";

多了"engine_type"，"tts_res_path "两个参数

5.在线合成方法和离线合成方法的区别

private void Online_TTS(string speekText){//语音合成开始session_id = MSCDLL.QTTSSessionBegin(session_begin_params, ref err_code);if (err_code != (int)Errors.MSP_SUCCESS){Debug.LogError("初始化语音合成失败，错误信息：" + err_code);return;}//语音合成设置文本err_code = MSCDLL.QTTSTextPut(session_id, speekText, (uint)Encoding.Default.GetByteCount(speekText), string.Empty);if (err_code != (int)Errors.MSP_SUCCESS){Debug.LogError("向服务器发送数据失败，错误信息：" + err_code);return;}uint audio_len = 0;SynthStatus synth_status = SynthStatus.MSP_TTS_FLAG_STILL_HAVE_DATA;MemoryStream memoryStream = new MemoryStream();memoryStream.Write(new byte[44], 0, 44);while (true){IntPtr source = MSCDLL.QTTSAudioGet(session_id, ref audio_len, ref synth_status, ref err_code);byte[] array = new byte[audio_len];if (audio_len > 0){Marshal.Copy(source, array, 0, (int)audio_len);}memoryStream.Write(array, 0, array.Length);Thread.Sleep(100);if (synth_status == SynthStatus.MSP_TTS_FLAG_DATA_END || err_code != (int)Errors.MSP_SUCCESS)break;}err_code = MSCDLL.QTTSSessionEnd(session_id, "");if (err_code != (int)Errors.MSP_SUCCESS){Debug.LogError("会话结束失败！错误信息: " + err_code);return;}WAVE_Header header = getWave_Header((int)memoryStream.Length - 44);//创建wav文件头byte[] headerByte = StructToBytes(header);//把文件头结构转化为字节数组memoryStream.Position = 0;//定位到文件头memoryStream.Write(headerByte, 0, headerByte.Length);//写入文件头bytes = memoryStream.ToArray();memoryStream.Close();if (Application.streamingAssetsPath + "/" + name + ".wav" != null){if (File.Exists(Application.streamingAssetsPath + "/" + name + ".wav"))File.Delete(Application.streamingAssetsPath + "/" + name + ".wav");File.WriteAllBytes(Application.streamingAssetsPath + "/" + name + ".wav", bytes);StartCoroutine(OnAudioLoadAndPaly(Application.streamingAssetsPath + "/" + name + ".wav", AudioType.WAV, gameObject.GetComponent<AudioSource>()));}Debug.Log("合成结束成功");}private void Offline_TTS(string speekText){//语音合成开始session_id = MSCDLL.QTTSSessionBegin(offline_session_begin_params, ref err_code);if (err_code != (int)Errors.MSP_SUCCESS){Debug.LogError("初始化语音合成失败，错误信息：" + err_code);return;}//语音合成设置文本err_code = MSCDLL.QTTSTextPut(session_id, speekText, (uint)Encoding.Default.GetByteCount(speekText), string.Empty);if (err_code != (int)Errors.MSP_SUCCESS){Debug.LogError("向服务器发送数据失败，错误信息：" + err_code);return;}uint audio_len = 0;SynthStatus synth_status = SynthStatus.MSP_TTS_FLAG_STILL_HAVE_DATA;MemoryStream memoryStream = new MemoryStream();memoryStream.Write(new byte[44], 0, 44);while (true){IntPtr source = MSCDLL.QTTSAudioGet(session_id, ref audio_len, ref synth_status, ref err_code);byte[] array = new byte[audio_len];if (audio_len > 0){Marshal.Copy(source, array, 0, (int)audio_len);}memoryStream.Write(array, 0, array.Length);Thread.Sleep(1);if (synth_status == SynthStatus.MSP_TTS_FLAG_DATA_END || err_code != (int)Errors.MSP_SUCCESS)break;}err_code = MSCDLL.QTTSSessionEnd(session_id, "");if (err_code != (int)Errors.MSP_SUCCESS){Debug.LogError("会话结束失败！错误信息: " + err_code);return;}WAVE_Header header = getWave_Header((int)memoryStream.Length - 44);//创建wav文件头byte[] headerByte = StructToBytes(header);//把文件头结构转化为字节数组memoryStream.Position = 0;//定位到文件头memoryStream.Write(headerByte, 0, headerByte.Length);//写入文件头bytes = memoryStream.ToArray();memoryStream.Close();if (Application.streamingAssetsPath + "/" + name + ".wav" != null){if (File.Exists(Application.streamingAssetsPath + "/" + name + ".wav"))File.Delete(Application.streamingAssetsPath + "/" + name + ".wav");File.WriteAllBytes(Application.streamingAssetsPath + "/" + name + ".wav", bytes);StartCoroutine(OnAudioLoadAndPaly(Application.streamingAssetsPath + "/" + name + ".wav", AudioType.WAV, gameObject.GetComponent<AudioSource>()));}Debug.Log("合成结束成功");}

线程休眠时间从100变成1

至于为什么在线的休眠时间长，缩短休眠时长无法正常合成的问题，这个还望有大佬知道的说声。以及不能没有休眠的原因。

最后：我是一菜鸡，不停努力的菜鸡。

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