一、百度语音合成
百度语音合成C# SDK主要是基于Rest API,必要互联网调用HTTP接口,Rest API 仅支持最多512个汉字,合成的格式文件为MP3,没有其它的格式。如果想离线使用需下载SDK,Android 或IOS。
1、安装语音合成 C# SDK
C# SDK 现已开源! https://github.com/Baidu-AIP/dotnet-sdk
** 支持平台:.Net Framework 3.5 4.0 4.5, .Net Core 2.0 **
2、方法一:使用Nuget管理依赖 (推荐)
在NuGet中搜索 Baidu.AI ,安装最新版即可。
packet地址 https://www.nuget.org/packages/Baidu.AI/
3、源程序界面及代码
- #region 百度语音
- private void simpleButton1_Click(object sender, EventArgs e)
- {
- if (spinEdit1.Value <= 0)
- {
- spinEdit1.Focus();
- return;
- }
- if (trackBarControl1.Value <= 0)
- {
- trackBarControl1.Focus();
- return;
- }
- if (string.IsNullOrEmpty(textBox1.Text.Trim()))
- {
- textBox1.Focus();
- textBox1.Select();
- return;
- }
- // 设置APPID/AK/SK
- var APP_ID = "******";
- var API_KEY = "******";
- var SECRET_KEY = "*****";
- var client = new Baidu.Aip.Speech.Tts(API_KEY, SECRET_KEY);
- client.Timeout = 60000; // 修改超时时间
- // 可选参数
- var option = new Dictionary<string, object>()
- {
- {"spd", spinEdit1.Value}, // 语速
- {"vol", trackBarControl1.Value}, // 音量
- {"per", comboBoxEdit1.SelectedIndex} // 发音人,4:情感度丫丫童声
- };
- var result = client.Synthesis(textBox1.Text, option);
- if (xtraSaveFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
- {
- if (result.ErrorCode == 0) // 或 result.Success
- {
- File.WriteAllBytes(xtraSaveFileDialog1.FileName, result.Data);
- }
- }
- }
- #endregion
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接口参数说明:
二、科大讯飞语音合成
科大讯飞没有c# SDK,采用WebAPi的形式调用。不过请注意该接口使用的HTTP API协议不支持跨域。
1、接口调用流程
注: 调用接口前需配置IP白名单,IP白名单规则请参照 IP白名单。(由于我之前没有设置正确的IP,导致接口调用不乐成)可以在百度里面输入IP将会显示你的互联网IP
- 通过接口密钥基于MD5计算签名,将签名以及其他参数放在Http Request Header中 。
- 将文本数据放在Http Request Body中 。
- 向服务器端发送Http请求后,接收服务器端的返回结果。
注: 在控制台添加服务后,点击“发音人管理”可自行添加并试用发音人,添加后会显示该发音人参数值,设置参数voice_name为相应的发音人参数值即可。
2、程序界面及源代码
源代码
- public class Rootobject
- {
- public string auf { get; set; }
- public string aue { get; set; }
- public string voice_name { get; set; }
- public string speed { get; set; }
- public string volume { get; set; }
- public string pitch { get; set; }
- public string engine_type { get; set; }
- public string text_type { get; set; }
- }
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- String Md5(string s)
- {
- System.Security.Cryptography.MD5 md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();
- byte[] bytes = System.Text.Encoding.UTF8.GetBytes(s);
- bytes = md5.ComputeHash(bytes);
- md5.Clear();
- string ret = "";
- for (int i = 0; i < bytes.Length; i++)
- {
- ret += Convert.ToString(bytes[i], 16).PadLeft(2, '0');
- }
- return ret.PadLeft(32, '0');
- }
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- #region 把流转换成缓存流
- MemoryStream StreamToMemoryStream(Stream instream)
- {
- MemoryStream outstream = new MemoryStream();
- const int bufferLen = 4096;
- byte[] buffer = new byte[bufferLen];
- int count = 0;
- while ((count = instream.Read(buffer, 0, bufferLen)) > 0)
- {
- outstream.Write(buffer, 0, count);
- }
- return outstream;
- }
- #endregion
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- #region 把缓存流转换成字节组
- public static byte[] streamTobyte(MemoryStream memoryStream)
- {
- byte[] buffer = new byte[memoryStream.Length];
- memoryStream.Seek(0, SeekOrigin.Begin);
- memoryStream.Read(buffer, 0, buffer.Length);
- return buffer;
- }
- #endregion
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- private void simpleButton2_Click(object sender, EventArgs e)
- {
- // 应用APPID(必须为webapi类型应用,并开通语音合成服务,参考帖子如何创建一个webapi应用:http://bbs.xfyun.cn/forum.php?mod=viewthread&tid=36481)
- string appID = "****";
- // 接口密钥(webapi类型应用开通合成服务后,控制台--我的应用---语音合成---相应服务的apikey)
- string APIKey = "****";
- // 语音合成webapi接口地址
- String url = "http://api.xfyun.cn/v1/service/v1/tts";
- String bodys;
- // 待合成文本
- string text = memoEdit1.Text;
- // 对要合成语音的文字先用utf-8然后进行URL加密
- byte[] textData = Encoding.UTF8.GetBytes(text);
- text = HttpUtility.UrlEncode(textData);
- bodys = string.Format("text={0}", text);
- //aue = raw, 音频文件生存类型为 wav或者pcm
- //aue = lame, 音频文件生存类型为 mp3
- string AUE = "lame";
- Rootobject root = new Rootobject();
- root.aue = AUE;
- root.auf = "audio/L16;rate=16000";
- root.speed = speed.Value.ToString();
- root.pitch = pitch.Value.ToString();
- root.volume = volume.Value.ToString();
- root.voice_name = voice_name.Text.Split('-')[0];
- root.engine_type = engine_type.Text.Split('-')[0];
- root.text_type = "text";
- string param = Newtonsoft.Json.JsonConvert.SerializeObject(root);
- // 获取十位的时间戳
- TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);
- string curTime = Convert.ToInt64(ts.TotalSeconds).ToString();
- // 对参数先utf-8然后用base64编码
- byte[] paramData = Encoding.UTF8.GetBytes(param);
- string paraBase64 = Convert.ToBase64String(paramData);
- // 形成签名
- string checkSum = Md5(APIKey + curTime + paraBase64);
- // 组装http请求头
- HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
- request = (HttpWebRequest)WebRequest.Create(url);
- request.Method = "POST";
- request.ContentType = "application/x-www-form-urlencoded";
- request.Headers.Add("X-Param", paraBase64);
- request.Headers.Add("X-CurTime", curTime);
- request.Headers.Add("X-Appid", appID);
- request.Headers.Add("X-CheckSum", checkSum);
- Stream requestStream = request.GetRequestStream();
- StreamWriter streamWriter = new StreamWriter(requestStream, Encoding.GetEncoding("gb2312"));
- streamWriter.Write(bodys);
- streamWriter.Close();
- String htmlStr = string.Empty;
- HttpWebResponse response = request.GetResponse() as HttpWebResponse;
- Stream responseStream = response.GetResponseStream();
- using (StreamReader reader = new StreamReader(responseStream, Encoding.GetEncoding("UTF-8")))
- {
- string header_type = response.Headers["Content-Type"];
- if (header_type == "audio/mpeg")
- {
- Stream st = response.GetResponseStream();
- MemoryStream memoryStream = StreamToMemoryStream(st);
- if (xtraSaveFileDialog2.ShowDialog() == System.Windows.Forms.DialogResult.OK)
- {
- // 生存音频文件地址和音频格式类型
- File.WriteAllBytes(xtraSaveFileDialog2.FileName, streamTobyte(memoryStream));
- }
- Console.WriteLine(response.Headers);
- Console.ReadLine();
- }
- else
- {
- htmlStr = reader.ReadToEnd();
- Console.WriteLine(htmlStr);
- Console.ReadLine();
- }
- }
- responseStream.Close();
- }
- #endregion
- }
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通过尝试百度和科大讯飞两个语音合成接口,发现科大讯飞语音比较好一些,百度有些词语会读错。
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