机器人框架 - 使用自定义语音服务错误 400 C#

Question

我创建了一个带有机器人框架的机器人，现在我正在尝试使用自定义语音服务而不是工作正常的必应语音转文本服务。我已经尝试了各种方法来解决问题，但是我收到错误400，我不知道如何解决此问题。

我想从wav pcm音频流中获取文本的方法：

public static async Task<string> CustomSpeechToTextStream(Stream audioStream)
{
audioStream.Seek(0, SeekOrigin.Begin);
var customSpeechUrl = "https://westus.stt.speech.microsoft.com/speech/recognition/interactive/cognitiveservices/v1?cid=<MyEndPointId>";
string token;
token = GetToken();
HttpWebRequest request = null;
request = (HttpWebRequest)HttpWebRequest.Create(customSpeechUrl);
request.SendChunked = true;
//request.Accept = @"application/json;text/xml";
request.Method = "POST";
request.ProtocolVersion = HttpVersion.Version11;
request.ContentType = "audio/wav; codec="audio/pcm"; samplerate=16000";
request.Headers["Authorization"] = "Bearer " + token;
byte[] buffer = null;
int bytesRead = 0;
using (Stream requestStream = request.GetRequestStream())
{
// Read 1024 raw bytes from the input audio file.
buffer = new Byte[checked((uint)Math.Min(1024, (int)audioStream.Length))];
while ((bytesRead = audioStream.Read(buffer, 0, buffer.Length)) != 0)
{
requestStream.Write(buffer, 0, bytesRead);
}
requestStream.Flush();
}
string responseString = string.Empty;
// Get the response from the service.
using (WebResponse response = request.GetResponse()) // Here i get the error
{
using (StreamReader sr = new StreamReader(response.GetResponseStream()))
{
responseString = sr.ReadToEnd();
}
}
dynamic deserializedResponse = Newtonsoft.Json.JsonConvert.DeserializeObject(responseString);
if (deserializedResponse.RecognitionStatus == "Success")
{
return deserializedResponse.DisplayText;
}
else
{
return null;
}
}

using (WebResponse response = request.GetResponse()){}我收到异常(错误 400(。

我是否以正确的方式执行 HttpWebRequest？

我在互联网上读到，也许问题是文件音频......但是为什么使用相同的流必应语音服务不返回此错误？

Answer 1

就我而言，问题是我的 wav 流音频没有 Cris (自定义语音服务( 所需的文件标头。sulution正在创建一个临时文件wav，读取文件wav并将其复制到流中，以将其作为数组发送到Cris

byte[] buffer = null;
int bytesRead = 0;
using (Stream requestStream = request.GetRequestStream())
{
buffer = new Byte[checked((uint)Math.Min(1024, (int)audioStream.Length))];
while ((bytesRead = audioStream.Read(buffer, 0, buffer.Length)) != 0)
{
requestStream.Write(buffer, 0, bytesRead);
}
requestStream.Flush();
}

或将其复制到内存流中并将其作为数组发送

using (Stream requestStream = request.GetRequestStream())
{
requestStream.Write(audioStream.ToArray(), 0, audioStream.ToArray().Length);
requestStream.Flush();
}