准备

接口文档
注册科大讯飞账户，获取语音转写的appid和secretkey

示例

StreamingAssets中放置一个中文音频
先上传语音，再获取转写文本。
上传语音成功，可获取orderId
使用orderId获取对应语音转写文本
返回值解析重写多个类的ToString方法，拼接转写文本

返回值解析

[System.Serializable]
public class Respone
{public string code;public string descInfo;public ResponeUpload content;public override string ToString(){if (content == null)return null;elsereturn content.ToString();}}
[System.Serializable]
public class ResponeUpload
{public string orderId;public int taskEstimateTime;public override string ToString(){return orderId;}
}[System.Serializable]
public class Result
{public string code;public string descInfo;public Content content;
}[System.Serializable]
public class Content
{public OrderInfo orderInfo;public string orderResult;public int taskEstimateTime;
}[System.Serializable]
public class OrderInfo
{public string orderId;public int failType;public int status;public long originalDuration;public long realDuration;
}[System.Serializable]
public class Res
{public List<Lattice> lattice;public List<Lattice2> lattice2;public override string ToString(){string str = null;var length = lattice2?.Count;for (int i = 0; i < length; i++){str += lattice2[i].ToString();}return str;}
}[System.Serializable]
public class Lattice
{public string json_1best;
}[System.Serializable]
public class Lattice2
{public string lid;public string end;public string begin;public string spk;public Json_1best json_1best;public override string ToString(){return json_1best.ToString();}
}[System.Serializable]
public class Json_1best
{public ST st;public override string ToString(){return st.ToString();}
}[System.Serializable]
public class ST
{public string sc;public string pa;public string pt;public string bg;public string si;public string rl;public string ed;public List<RT> rt;public override string ToString(){string str = null;var length = rt?.Count;for (int i = 0; i < length; i++){str += rt[i].ToString();}return str;}
}[System.Serializable]
public class RT
{public string nb;public string nc;public List<Ws> ws;public override string ToString(){string str = null;var length = ws?.Count;for (int i = 0; i < length; i++){str += ws[i].ToString();}return str;}
}[System.Serializable]
public class Ws
{public int wb;public int we;public List<CW> cw;public override string ToString(){string str = null;var length = cw?.Count;for (int i = 0; i < length; i++){str += cw[i].ToString();}return str;}
}[System.Serializable]
public class CW
{public string w;public string wp;public string wc;public override string ToString(){return w;}
}

上传语音，获取转写文本

using System.Collections;
using UnityEngine;
using UnityEngine.Networking;
using System.IO;
using System.Security.Cryptography;
using System;
using System.Text;
using System.Collections.Generic;public class AudioToText : MonoBehaviour
{string testFilePath = Application.streamingAssetsPath + "/合成音频.wav";string appid ;string secretkey;string orderId;//上传语音后获取的订单idstring info;//转写的内容string message = "语音转写";IEnumerator UploadAudio(){string url = "http://raasr.xfyun.cn/v2/api/upload";byte[] data = File.ReadAllBytes(testFilePath);var ts = DateTimeToTimestamp().ToString();url = url + "?" +"appId=" + appid +"&signa=" + Signa(appid, ts) +"&ts=" + ts +"&fileSize=" + data.Length +"&fileName=" + "合成音频.wav" +"&duration=" + 200;using (var req = new UnityWebRequest(url, UnityWebRequest.kHttpVerbPOST)){req.timeout = 60;req.downloadHandler = new DownloadHandlerBuffer();req.uploadHandler = new UploadHandlerRaw(data);req.SetRequestHeader("Content-Type", "application/octet-stream");message = "上传中...";yield return req.SendWebRequest();if (req.result == UnityWebRequest.Result.Success){var info = JsonUtility.FromJson<Respone>(req.downloadHandler.text);orderId = info.ToString();message = "请求结束,语音上传：" + (string.IsNullOrEmpty(orderId) == true ? "失败" : "成功");}else{message = "请求结束,失败原因：" + req.error;}}}IEnumerator Result(){string url = "https://raasr.xfyun.cn/v2/api/getResult";var ts = DateTimeToTimestamp().ToString();List<IMultipartFormSection> list = new List<IMultipartFormSection>();list.Add(new MultipartFormDataSection("appId", appid));list.Add(new MultipartFormDataSection("ts", ts));list.Add(new MultipartFormDataSection("signa", Signa(appid, ts)));list.Add(new MultipartFormDataSection("duration", "200"));list.Add(new MultipartFormDataSection("orderId", orderId));using (var req = UnityWebRequest.Post(url, list)){message = "获取转写文本中...";yield return req.SendWebRequest();if (req.result == UnityWebRequest.Result.Success){var txt = req.downloadHandler.text;var res = JsonUtility.FromJson<Result>(txt);if (res != null){if (!string.IsNullOrEmpty(res.content.orderResult))info = JsonUtility.FromJson<Res>(res.content.orderResult).ToString();}message = "请求结束,获取文本信息：" + (string.IsNullOrEmpty(info) == true ? "失败" : "成功");}else{message = "请求结束,失败原因：" + req.error;}}}string Signa(string appid, string ts){StringBuilder result = new StringBuilder();string baseString = appid + ts;using (MD5 md5 = MD5.Create()){var bytes = md5.ComputeHash(Encoding.UTF8.GetBytes(baseString));for (int i = 0; i < bytes.Length; i++){result.Append(bytes[i].ToString("x2"));}}using (HMACSHA1 mac = new HMACSHA1(Encoding.UTF8.GetBytes(secretkey))){var bytes = mac.ComputeHash(Encoding.UTF8.GetBytes(result.ToString()));return Convert.ToBase64String(bytes);}}public static long DateTimeToTimestamp(){DateTime dd = new DateTime(1970, 1, 1, 0, 0, 0, 0);DateTime timeUTC = DateTime.UtcNow;TimeSpan ts = (timeUTC - dd);return (long)ts.TotalMilliseconds;}private void OnGUI(){GUILayout.Label(message);if (string.IsNullOrEmpty(orderId)){if (GUILayout.Button("上传中文音频")){StartCoroutine(UploadAudio());}}else{if (GUILayout.Button("获取转写文本")){StartCoroutine(Result());}}if (!string.IsNullOrEmpty(info)){GUILayout.Label(info);}}}

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Unity使用科大讯飞-语音转写接口

准备

示例

返回值解析

上传语音，获取转写文本

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