從ChatGPT的api，取得文件後，再透過語音合成轉為base64音檔念出。
台灣雅婷 https://www.yating.tw/zh/api-text-to-speech-zh/
雅婷文字轉語音 https://tts.yating.tw/
文件 https://developer.yating.tw/doc/tts-%E8%AA%9E%E9%9F%B3%E5%90%88%E6%88%90#%E7%AF%84%E4%BE%8B
後台: https://developer.yating.tw/zh-TW/dashboard
其他參考
https://ai.baidu.com/tech/speech/tts
https://aws.amazon.com/tw/polly/
https://tw.piliapp.com/text-to-speech/
https://azure.microsoft.com/zh-tw/products/cognitive-services/text-to-speech/#overview
https://cloud.google.com/text-to-speech?hl=zh-tw
https://azure.microsoft.com/zh-tw/products/cognitive-services/text-to-speech/
https://www.xfyun.cn/services/online_tts
https://everest-ai.ximalaya.com/charm-studio/
static void DecodeBase64ToFile(string Base64String, string filenames)
{
try
{
byte[] bytes = Convert.FromBase64String(Base64String);
using (var fs = new FileStream(filenames, FileMode.Create, FileAccess.Write))
{
fs.Write(bytes, 0, bytes.Length);
fs.Flush();
}
}
catch (Exception e)
{
}
}