(VB.NET) IBM Cloud - Text to Speech - Synthesize Audio (GET)

Synthesizes text to audio that is spoken in the specified voice.

For more information, see https://cloud.ibm.com/apidocs/text-to-speech#synthesize-audio-get

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

' This example assumes the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim http As New Chilkat.Http
Dim success As Boolean

http.Login = "apikey"
http.Password = "my_apikey"
http.BasicAuth = True

' Use your base URL shown in the credentials web page (below your apikey)
Dim myBaseUrl As String = "https://api.us-south.text-to-speech.watson.cloud.ibm.com/instances/31941e96-7b89-4d56-8993-9cd8f18ec2d8"


Dim sbUrl As New Chilkat.StringBuilder
sbUrl.Append(myBaseUrl)
sbUrl.Append("/v1/synthesize?accept=ACCEPT_TYPE&voice=CHOSEN_VOICE&text=TEXT_TO_SYNTHESIZE")

' Choose "audio/wav" for the output file type.
Dim numReplaced As Integer = sbUrl.Replace("ACCEPT_TYPE",http.UrlEncode("audio/wav"))
' See the choices for voices at https://cloud.ibm.com/apidocs/text-to-speech#synthesize-audio-get
numReplaced = sbUrl.Replace("CHOSEN_VOICE","en-US_MichaelVoice")
Dim textToSynthesize As String = "When life gives you lemons, order the lobster tail."
numReplaced = sbUrl.Replace("TEXT_TO_SYNTHESIZE",http.UrlEncode(textToSynthesize))

' Send the GET to synthesize the voice.
' The response file will be contained in bdResponseBody
Dim bdResponseBody As New Chilkat.BinData
success = http.QuickGetBd(sbUrl.GetAsString(),bdResponseBody)
If (success = False) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If

Dim respStatusCode As Integer = http.LastStatus
Debug.WriteLine("response status code = " & respStatusCode)

If (respStatusCode = 200) Then
    success = bdResponseBody.WriteFile("qa_output/lobster.wav")
    Debug.WriteLine("Success!")
Else
    Debug.WriteLine(bdResponseBody.GetString("utf-8"))
End If