在vb.net中使用google cloud speech API将音频文件转录为文本文件

Question

我找不到Google Cloud speech API来使用vb.net将.wav文件转录成.txt文件。

身份验证正在工作：

AuthExplicit2("AudioTranscription", "C:\AudioTranscription\GoogleAuthentication\GoogleTranscriptionAuthentication.json")

我试过寻找代码示例作为模板，但我就是搞不懂代码。有人能帮我吗？

    Try
        Dim fileStream As FileStream = File.OpenRead("C:\AudioTranscription\Audio\dictation-partial.flac")
        'Dim memoryStream As MemoryStream = File.OpenWrite("C:\AudioTranscription\Audio\dictation-partial.flac")
        'Dim memoryStream As MemoryStream = New MemoryStream("C:\AudioTranscription\Audio\dictation-partial.txt")
        memoryStream.SetLength(fileStream.Length)
        fileStream.Read(memoryStream.GetBuffer(), 0, CInt(fileStream.Length))
        Dim BA_AudioFile As Byte() = memoryStream.GetBuffer()
        Dim _HWR_SpeechToText As HttpWebRequest = Nothing
        '_HWR_SpeechToText = CType(HttpWebRequest.Create("https://www.google.com/speech-api/v2/recognize?output=json&lang=en-us&key=YOUR_API_KEY_HERE"), HttpWebRequest)
        _HWR_SpeechToText.Credentials = CredentialCache.DefaultCredentials
        _HWR_SpeechToText.Method = "POST"
        _HWR_SpeechToText.ContentType = "audio/x-flac; rate=44100"
        _HWR_SpeechToText.ContentLength = BA_AudioFile.Length
        Dim stream As Stream = _HWR_SpeechToText.GetRequestStream()
        stream.Write(BA_AudioFile, 0, BA_AudioFile.Length)
        stream.Close()
        Dim HWR_Response As HttpWebResponse = CType(_HWR_SpeechToText.GetResponse(), HttpWebResponse)

        If HWR_Response.StatusCode = HttpStatusCode.OK Then
            Dim SR_Response As StreamReader = New StreamReader(HWR_Response.GetResponseStream())
            Console.WriteLine(SR_Response.ReadToEnd())
        End If
    Catch ex As Exception
        Console.WriteLine(ex.ToString())
    End Try

    Console.ReadLine()
    imgAudioFile.Visible = True

Answer 1

public documentation中的代码需要client libraries或生成post request。在使用post请求时，您应该将音频文件上传到Cloud Storage，以便根据文档使用请求中的url，而不是使用本地文件。关于POST请求，您可以基于this post在post请求上发送JSON body。