Nexmo-RTS-Voicebase

This is a demo of using a Nexmo Websocket to transcribe audio in real-time using Voicebase. To view a live version of the demo, go to https://nexmo-vb.herokuapp.com/ and dial the phone number listed on the page. Then, begin speaking, you will see the transciption of the speech at the bottom of the page. On the left, you will see the sentiment of the converstaion. When positive words are spoken('happy','joy', 'exite'..etc), the sentiment line will move higher. When negitive words are spoken, this line will decrease. On the right, shows a graph of keywords spoken in the conversation.

In order to run this demo, you will need a few things:

• Create an application in Nexmo
• set the event_url to {your-url}/events and answer_url to {your-url}/answer.
• save the application_id to your enviroment variables..
• copy the private key and save to a file, name in private.key and save this into the server folder
• purchase a nexmo phone number
• assign this phone number to this application
• create a .env file will the following variables

API_KEY={NEXMO-API-KEY}
API_SECRET={NEXMO-API-SECRET}
APPLICATION_ID={NEXMO-APPLICATION-ID}
NEXMO_NUMBER={NEXMO PHONE NUMBER ASSIGNED TO APPLICATION
NEXMO_DEBUG=true
WEB_SOCKET_URL={URL OF WEBSOCKET}
CONFERENCE_NAME={NAME OF CONFERENCE}
PRIVATE_KEY_PATH={PATH TO PRIVATE KEY}

finally run npm start to begin the server

The other folder, WS-node is the webocket. In this folder, create a .env file with the following

ASR_URL={VOICEBASE_URL}
ASR_CLIENT_KEY={VOICEBASE_CLIENT_KEY}
ASR_CLIENT_SECRET={VOICEBASE_CLIENT_SECRET}

links to voicebase comming soon

finally, run npm start inside the WS-node folder, and navigate to the url on your browser