I've never used Bing speech API before, so, I have many question about bing speech API.
If I want to make Android App using Bing speech API, should I subscribe bing speech API at Azure?
And Should I sign up for LUIS?
And I want to know difference between "primary key" and "subscription key".
Bing Speech API and LUIS have two different purposes. The purpose of the Bing speech API is to listen to speech and convert it into text. Once it recognizes a speech, it gives you an array of possible text results in decreasing order of 'confidence' (confidence implying accuracy).
LUIS, on the other hand, is a language understanding API. You will need to use this only if you want your app to understand and respond to speech-based instructions. LUIS has to be trained to identify the 'intent' of a text using 'utterances' and 'entities'. (Do not confuse this with android intents)
So, only if you need to know the intent behind a speech input, you should sign up for LUIS. Since LUIS accepts only text as input, Bing Speech API has to be used first to convert speech to text. To make it easy, the Bing Speech API has a method, SpeechRecognitionServiceFactory.createDataClientWithIntent which takes luisAppID and luisSubscriptionID as parameters among others. Use this to initialize your MicrophoneRecognitionClient. This call returns a json response of possible intents in the ISpeechRecognitionServerEvents.onIntentReceived(String response) interface method.
primaryKey:
Primary key is your Bing Speech API subscription key on Microsoft Cognitive Services.
luisAppId:
LuisAppId is the app id on LUIS. In the LUIS web portal, go to App Settings in your Luis Application.
luisSubscriptionID:
LuisSubscriptionID can be obtained from the publish url. In the LUIS web portal, go to Publish in your Luis Application.
To know more about creating utterances, intents and entities, watch these videos:
