阿里云语音AI异步长文本语音合成有没.Net的示例？

没有的。--此回答整理自钉群“阿里语音AI【6群】”

有，阿里云语音AI异步长文本语音合成支持多种编程语言，包括 .Net。 下面是一个.NET示例，用于演示如何使用阿里云语音AI异步长文本语音合成API。

using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;

namespace TextToSpeechDemo
{
    class TextToSpeechClient
    {
        private const string BASE_URL = "https://nls-gateway.cn-shanghai.aliyuncs.com/stream/v1/tts";

        // AccessKey ID 和 AccessKey Secret
        private string accessKeyId;
        private string accessKeySecret;

        public TextToSpeechClient(string accessKeyId, string accessKeySecret)
        {
            this.accessKeyId = accessKeyId;
            this.accessKeySecret = accessKeySecret;
        }

        public async Task<string> Synthesize(string text)
        {
            // 生成请求参数
            Dictionary<string, string> requestParams = new Dictionary<string, string>();
            requestParams.Add("appkey", "您的AppKey");
            requestParams.Add("format", "wav");
            requestParams.Add("sample_rate", "16000");
            requestParams.Add("voice", "xiaogang");
            requestParams.Add("speech_rate", "0");
            requestParams.Add("pitch_rate", "0");
            requestParams.Add("volume", "50");
            requestParams.Add("text", text);

            // 签名
            string signature = Sign(requestParams, accessKeySecret);

            // 构建请求URL和请求Body
            string requestUrl = BASE_URL + "?appkey=" + requestParams["appkey"] + "&format=" + requestParams["format"] + "&sample_rate=" + requestParams["sample_rate"] + "&voice=" + requestParams["voice"] + "&speech_rate=" + requestParams["speech_rate"] + "&pitch_rate=" + requestParams["pitch_rate"] + "&volume=" + requestParams["volume"] + "&signature=" + signature;
            string requestBody = "text=" + requestParams["text"];

            // 向服务端发送请求
            HttpWebRequest request = WebRequest.CreateHttp(requestUrl);
            request.Method = "POST";
            request.ContentType = "application/x-www-form-urlencoded";
            using (StreamWriter sw = new StreamWriter(request.GetRequestStream()))
            {
                sw.Write(requestBody);
            }

            // 获取响应并读取响应数据
            using (HttpWebResponse response = (HttpWebResponse)await request.GetResponseAsync())
            {
                using (Stream stream = response.GetResponseStream())
                {
                    MemoryStream ms = new MemoryStream();
                    stream.CopyTo(ms);
                    return Convert.ToBase64String(ms.ToArray());
                }
            }
        }

        // 根据请求参数和AccessKey Secret进行签名
        private string Sign(Dictionary<string, string> requestParams, string accessKeySecret)
        {
            List<string> keys = new List<string>(requestParams.Keys);
            keys.Sort();

            StringBuilder builder = new StringBuilder();
            foreach (string key in keys)
            {
                builder.Append(Uri.EscapeDataString(key)).Append("=").Append(Uri.EscapeDataString(requestParams[key])).Append("&");
            }
            builder.Remove(builder.Length - 1, 1);

            HMACSHA1 hmac = new HMACSHA1(Encoding.UTF8.GetBytes(accessKeySecret + "&"));
            byte[] hash = hmac.ComputeHash(Encoding.UTF8.GetBytes(builder.ToString()));
            return Convert.ToBase64String(hash);
        }
    }
}

在运行此示例之前，您需要将“您的AppKey”替换为您在阿里云控制台中创建的语音合成应用程序的AppKey，并将“accessKeyId”和“accessKeySecret”分别替换为您的阿里云AccessKey ID和AccessKey Secret。

此示例演示了如何将文本转换为音频，并将音频文件编码为 Base64 字符串。您可以根据自己的需要修改其它参数，例如音频格式，音频采样率，发音人等。