在C#中使用科大訊飛Web API進行語音合成
阿新 • • 發佈:2018-08-31
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最近工作中需要用到訊飛語音合成接口,網上看了下基本都是Java,PHP,Python版本的,正好補上C# 版本,代碼比較簡單。
首先在訊飛開放平臺上創建一個WebApi項目,取到APPID與APIKey,按官方文檔提前準備好一個參數類備用,每個參數是什麽意思,官方文檔上有很詳細的說明:
public class Parameter { public string auf { get; set; } = "audio/L16;rate=16000"; public string aue { get; set; } = "lame"; public string voice_name { get; set; } = "xiaoyan"; public string speed { get; set; } = "50"; public string volume { get; set; } = "50"; public string pitch { get; set; } = "50"; public string engine_type { get; set; } = "intp65";public string text_type { get; set; } = "text"; }
實例化一個Parameter並轉換為Base64:
Parameter parameter = new Parameter(); var json_str = JsonConvert.SerializeObject(parameter); var base64_str = Convert.ToBase64String(Encoding.UTF8.GetBytes(json_str));
分別創建一個HttpWebRequest與HttpWebResponse,並將請求方式設為POST:
HttpWebRequest httpwebrequest = null; HttpWebResponse httpwebresponse = null; httpwebrequest = (HttpWebRequest)WebRequest.Create("http://api.xfyun.cn/v1/service/v1/tts");
httpwebrequest.Method = "POST";
接下來按照文檔設置一些必要參數及請求頭部:
String t_s_1970 =TimestampSince1970;
String checksum = GetMD5("你的APIKey" +t_s_1970 + base64_str);//準備好一個checksum備用
httpwebrequest.Headers.Add("X-Param", base64_str);
httpwebrequest.Headers.Add("X-CurTime", t_s_1970); httpwebrequest.Headers.Add("X-Appid", "你的APPID"); httpwebrequest.Headers.Add("X-CheckSum", checksum); httpwebrequest.Headers.Add("X-Real-Ip", "127.0.0.1"); httpwebrequest.Headers.Add("Content-Type", "application/x-www-form-urlencoded"); httpwebrequest.Headers.Add("charset", "utf-8");
上面準備好之後將要合成的內容寫入到Body裏,並獲取返回結果:
using (Stream stream = httpwebrequest.GetRequestStream()) { byte[] data = Encoding.UTF8.GetBytes("text=這是中國,那裏也是中國。");//更改生成內容時,text= 要保留 stream.Write(data, 0, data.Length); }httpwebresponse = (HttpWebResponse)httpwebrequest.GetResponse(); Stream res_strem = httpwebresponse.GetResponseStream(); if (httpwebresponse.ContentType == "text/plain")//ContentType等於"text/plain"即表示生成失敗,等於"audio/mpeg"即生成成功 { StreamReader s_reader = new StreamReader(res_strem, Encoding.UTF8); String a = s_reader.ReadToEnd(); }else{ StreamWriter sw = new StreamWriter(@"D:\abc.mp3"); res_strem.CopyTo(sw.BaseStream); sw.Flush(); sw.Close(); res_strem.Dispose();
}
上面使用到的GetMD5與TimestampSince1970方法體為:
public static string GetMD5(string source, bool need16 = false, bool toUpper = false) { var t_toUpper = toUpper ? "X2" : "x2"; if (string.IsNullOrWhiteSpace(source)) { return string.Empty; } string t_md5_code = string.Empty; try { MD5 t_md5 = MD5.Create(); byte[] _t = t_md5.ComputeHash(Encoding.UTF8.GetBytes(source)); for (int i = 0; i < _t.Length; i++) { t_md5_code += _t[i].ToString(t_toUpper); } if (need16) { t_md5_code = t_md5_code.Substring(8, 16); } } catch { } return t_md5_code; }
public static string TimestampSince1970 => Convert.ToInt64((DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0)).TotalSeconds).ToString();
至此一個完整個方法就好了,是不是很簡單。
在C#中使用科大訊飛Web API進行語音合成