Google Cloud Text-to-Speech API: Node.js Client

Node.js idiomatic client for Cloud Text-to-Speech API.

The Cloud Text-to-Speech API converts text or Speech Synthesis Markup Language (SSML) input into audio data of natural human speech.

• Cloud Text-to-Speech API Node.js Client API Reference
• github.com/googleapis/nodejs-text-to-speech
• Cloud Text-to-Speech API Documentation

Read more about the client libraries for Cloud APIs, including the older Google APIs Client Libraries, in Client Libraries Explained.

Table of contents:

• Quickstart
  • Before you begin
  • Installing the client library
  • Using the client library
• Samples
• Versioning
• Contributing
• License

Quickstart

Before you begin

1. Select or create a Cloud Platform project.

   Go to the projects page

2. Enable billing for your project.

   Enable billing

3. Enable the Google Cloud Text-to-Speech API.

   Enable the API

4. Set up authentication with a service account so you can access the API from your local workstation.

Installing the client library

npm install --save @google-cloud/text-to-speech

Using the client library

const fs = require('fs');

// Imports the Google Cloud client library
const textToSpeech = require('@google-cloud/text-to-speech');

// Creates a client
const client = new textToSpeech.TextToSpeechClient();

// The text to synthesize
const text = 'Hello, world!';

// Construct the request
const request = {
  input: {text: text},
  // Select the language and SSML Voice Gender (optional)
  voice: {languageCode: 'en-US', ssmlGender: 'NEUTRAL'},
  // Select the type of audio encoding
  audioConfig: {audioEncoding: 'MP3'},
};

// Performs the Text-to-Speech request
client.synthesizeSpeech(request, (err, response) => {
  if (err) {
    console.error('ERROR:', err);
    return;
  }

  // Write the binary audio content to a local file
  fs.writeFile('output.mp3', response.audioContent, 'binary', err => {
    if (err) {
      console.error('ERROR:', err);
      return;
    }
    console.log('Audio content written to file: output.mp3');
  });
});

Samples

Samples are in the samples/ directory. The samples' README.md has instructions for running the samples.

Sample	Source Code	Try it
Synthesize Speech	source code
List supported voices	source code

The Cloud Text-to-Speech API Node.js Client API Reference documentation also contains samples.

Versioning

This library follows Semantic Versioning.

This library is considered to be in alpha. This means it is still a work-in-progress and under active development. Any release is subject to backwards-incompatible changes at any time.

More Information: Google Cloud Platform Launch Stages

Contributing

Contributions welcome! See the Contributing Guide.

License

Apache Version 2.0

See LICENSE