Node.js idiomatic client for Speech API.
The Cloud Speech API enables easy integration of Google speech recognition technologies into developer applications. Send audio and receive a text transcription from the Cloud Speech API service.
- Speech API Node.js Client API Reference
- github.com/googleapis/nodejs-speech
- 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:
-
Select or create a Cloud Platform project.
-
Enable billing for your project.
-
Enable the Google Cloud Speech API API.
-
Set up authentication with a service account so you can access the API from your local workstation.
npm install --save @google-cloud/speech
// Imports the Google Cloud client library
const speech = require('@google-cloud/speech');
const fs = require('fs');
// Your Google Cloud Platform project ID
const projectId = 'your-project-id';
// Creates a client
const client = new speech.SpeechClient({
projectId: projectId,
});
// The name of the audio file to transcribe
const fileName = './resources/audio.raw';
// Reads a local audio file and converts it to base64
const file = fs.readFileSync(fileName);
const audioBytes = file.toString('base64');
// The audio file's encoding, sample rate in hertz, and BCP-47 language code
const audio = {
content: audioBytes,
};
const config = {
encoding: 'LINEAR16',
sampleRateHertz: 16000,
languageCode: 'en-US',
};
const request = {
audio: audio,
config: config,
};
// Detects speech in the audio file
client
.recognize(request)
.then(data => {
const response = data[0];
const transcription = response.results
.map(result => result.alternatives[0].transcript)
.join('\n');
console.log(`Transcription: ${transcription}`);
})
.catch(err => {
console.error('ERROR:', err);
});Samples are in the samples/ directory. The samples' README.md
has instructions for running the samples.
| Sample | Source Code | Try it |
|---|---|---|
| Speech Recognition | source code |  |
The Speech API Node.js Client API Reference documentation also contains samples.
This library follows Semantic Versioning.
This library is considered to be in beta. This means it is expected to be mostly stable while we work toward a general availability release; however, complete stability is not guaranteed. We will address issues and requests against beta libraries with a high priority.
More Information: Google Cloud Platform Launch Stages
Contributions welcome! See the Contributing Guide.
Apache Version 2.0
See LICENSE