Play text-to-speech into a call
This code snippet plays a text-to-speech message into the specified call.
Example
Replace the following variables in the example code:
| Key | Description |
|---|---|
VOICE_CALL_ID | The UUID of the call leg. |
VOICE_TEXT | The text of the message to play into the call. |
VOICE_LANGUAGE | Language to use for the speech - see Supported Languages. |
Prerequisites
Execute the following command at your terminal prompt to create the JWT for authentication:
export JWT=$(nexmo jwt:generate $PATH_TO_PRIVATE_KEY application_id=$NEXMO_APPLICATION_ID)Write the code
Add the following to play-tts-into-a-call.sh:
curl -X PUT https://api.nexmo.com/v1/calls/$VOICE_CALL_ID/talk\
-H "Authorization: Bearer $JWT"\
-H "Content-Type: application/json"\
-d '{"text": "'"$VOICE_TEXT"'", "language": "'"$VOICE_LANGUAGE"'"}'Run your code
Save this file to your machine and run it:
Prerequisites
npm install @vonage/server-sdkCreate a file named play-tts-into-a-call.js and add the following code:
Run your code
Save this file to your machine and run it:
Prerequisites
Add the following to build.gradle:
Create a file named PlayTextToSpeechIntoCall and add the following code to the main method:
Write the code
Add the following to the main method of the PlayTextToSpeechIntoCall file:
Run your code
We can use the application plugin for Gradle to simplify the running of our application. Update your build.gradle with the following:
Run the following gradle command to execute your application, replacing com.vonage.quickstart.kt.voice with the package containing PlayTextToSpeechIntoCall:
Prerequisites
Add the following to build.gradle:
Create a file named SendTalkToCall and add the following code to the main method:
Run your code
We can use the application plugin for Gradle to simplify the running of our application. Update your build.gradle with the following:
Run the following gradle command to execute your application, replacing com.vonage.quickstart.voice with the package containing SendTalkToCall:
Prerequisites
Install-Package VonagePrerequisites
composer require vonage/clientRun your code
Save this file to your machine and run it:
Prerequisites
pip install vonage python-dotenvRun your code
Save this file to your machine and run it:
Prerequisites
gem install sinatra sinatra-contribRun your code
Save this file to your machine and run it:
Try it out
When you run the code, a text-to-speech message is played into the call identified with the specified UUID.
Further Reading
- Conference Calling - This guide explains the two concepts Vonage associates with a call, a leg and a conversation.