[speech-to-text] "ExampleStreaming" not working

[doukasd]

ExampleStreaming is not working. Consequently, it's not clear to a developer new to this how to get Speech-to-Text to work using IBM Watson...

Steps to reproduce:

• Download latest IBM Watson Unity SDK (i got v4.0.0)
• Download latest IBM Unity Core (I got v1.0.0)
• Create a new Unity project using your Unity version or preference (I used 2019.2) and drag the unzipped above folders inside it
• Make sure you are targeting .NET 4,x
• Open the "ExampleStreaming" scene from the Watson samples
• Fill in the API key and URL based on your account credentials and set the model to en-US_BroadbandModel
• Play
• Observe that nothing changes in the UI, nothing seems to be parsed or returned. Also observer that after a few seconds you get this warning and it seems that it's all stopped at that point:

[10/16/2019 13:37:38][SpeechToText.KeepAlive()][DEBUG] KeepAlive exited.
UnityEngine.Debug:Log(Object)
IBM.Cloud.SDK.Debug.DebugReactor:ProcessLog(LogRecord) (at Assets/IBM/unity-sdk-core-1.0.0/Debug/DebugReactor.cs:68)
IBM.Cloud.SDK.LogSystem:ProcessLog(LogRecord) (at Assets/IBM/unity-sdk-core-1.0.0/Logging/Logger.cs:207)
IBM.Cloud.SDK.Log:Debug(String, String, Object[]) (at Assets/IBM/unity-sdk-core-1.0.0/Logging/Logger.cs:229)
IBM.Watson.SpeechToText.V1.<KeepAlive>d__226:MoveNext() (at Assets/IBM/unity-sdk-4.0.0/Scripts/Services/SpeechToText/V1/SpeechToTextServiceExtension.cs:554)
IBM.Cloud.SDK.Utilities.Routine:MoveNext() (at Assets/IBM/unity-sdk-core-1.0.0/Utilities/Runnable.cs:131)
UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr)

[mamoonraja]

@doukasd thanks for opening the issue, It looks like problem might be that your mic is not picking up the audio and service is exiting after not detecting anything in a while. There should be a log for which device you are connected to, it should look like: devices: Built-in Microphone or whatever device you are using. For debugging purposes can you confirm if you see any other error before KeepAlive exited.

[doukasd]

Thank you for the quick response. There is no error I am afraid. My mic device is picked up correctly too.

[doukasd]

Following @mamoonraja 's advice, adding _service.SetServiceUrl(_serviceUrl); after this line sets the _serviceUrl correctly and then the example works fine!

I guess we can leave this issue open until this is part of the next release/master.

Thank you.