Text to Speech Java Starter Application

The IBM Watson Text to Speech service is designed for streaming, low latency, synthesis of audio from text. It is the inverse of the automatic speech recognition. The TTS service can be accessed via a REST interface or directly via TCP.

Give it a try! Click the button below to fork into IBM DevOps Services and deploy your own copy of this application on Bluemix.

Getting Started

1. Create a Bluemix Account

   Sign up in Bluemix, or use an existing account. Watson Services in Beta are free to use.

2. Download and install the Cloud-foundry CLI tool

3. Edit the manifest.yml file and change the <application-name> to something unique.

applications:
- services:
  - text-to-speech-service
  name: <application-name>
  path: webApp.war
  memory: 512M

The name you use determines your initial application URL, e.g., <application-name>.mybluemix.net.

4. Connect to Bluemix in the command line tool.

$ cf api https://api.ng.bluemix.net
$ cf login -u <your-user-ID>

5. Create the Text to Speech service in Bluemix.

$ cf create-service text_to_speech standard text-to-speech-service

6. Download and install the ant compiler.

7. Build the project.

   You need to use the Apache ant compiler to build the Java application. For information about the ant compiler and to download a copy for your operating system, visit ant.apache.org.

$ ant

8. Push it live!

$ cf push -p outut/webApp.war

Running locally

The application uses the WebSphere Liberty profile runtime as its server, so you need to download and install the profile as part of the steps below.

1. Copy the credentials from your text-to-speech-service-standard service in Bluemix to DemoServlet.java. You can use the following command to see the credentials:

   $ cf env <application-name>

   Example output:

   System-Provided:
   {
   "VCAP_SERVICES": {
     "text_to_speech": [{
         "credentials": {
           "url": "<url>",
           "password": "<password>",
           "username": "<username>"
         },
       "label": "text_to_speech",
       "name": "text-to-speech-service",
       "plan": "standard"
    }]
   }
   }

   You need to copy the username, password, and url.

2. Install the Liberty profile runtime (for Mac OSX, check this guide).

3. Create a Liberty profile server in Eclipse.

4. Add the application to the server.

5. Start the server.

6. Go to http://localhost:9080/app/ to see the running application.

Troubleshooting

To troubleshoot your Bluemix application, the most useful source of information is the log files. To see them, run the following command:

$ cf logs <application-name> --recent

License

This sample code is licensed under Apache 2.0. Full license text is available in LICENSE. The sample uses jQuery which is licensed under MIT

Contributing

See CONTRIBUTING.

Open Source @ IBM

Find more open source projects on the IBM Github Page.