Java idiomatic client for Cloud Speech.

• Product Documentation
• Client Library Documentation

If you are using Maven with BOM, add this to your pom.xml file

<dependencyManagement>
  <dependencies>
    <dependency>
      <groupId>com.google.cloud</groupId>
      <artifactId>libraries-bom</artifactId>
      <version>4.1.0</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
  </dependencies>
</dependencyManagement>

<dependencies>
  <dependency>
    <groupId>com.google.cloud</groupId>
    <artifactId>google-cloud-speech</artifactId>
  </dependency>
</dependencies>

If you are using Maven without BOM, add this to your dependencies:

<dependency>
  <groupId>com.google.cloud</groupId>
  <artifactId>google-cloud-speech</artifactId>
  <version>1.22.3</version>
</dependency>

If you are using Gradle, add this to your dependencies

compile 'com.google.cloud:google-cloud-speech:1.22.3'

If you are using SBT, add this to your dependencies

libraryDependencies += "com.google.cloud" % "google-cloud-speech" % "1.22.3"

See the Authentication section in the base directory's README.

You will need a Google Cloud Platform Console project with the Cloud Speech API enabled.

Follow these instructions to get your project set up. You will also need to set up the local development environment by installing the Google Cloud SDK and running the following commands in command line: gcloud auth login and gcloud config set project [YOUR PROJECT ID].

You'll need to obtain the google-cloud-speech library. See the Quickstart section to add google-cloud-speech as a dependency in your code.

Cloud Speech enables easy integration of Google speech recognition technologies into developer applications. Send audio and receive a text transcription from the Speech-to-Text API service.

See the Cloud Speech client library docs to learn how to use this Cloud Speech Client Library.

The following code sample shows how to recognize speech using an audio file from a Cloud Storage bucket as input. First, add the following imports at the top of your file:

import com.google.cloud.speech.v1.SpeechClient;
import com.google.cloud.speech.v1.RecognitionAudio;
import com.google.cloud.speech.v1.RecognitionConfig;
import com.google.cloud.speech.v1.RecognitionConfig.AudioEncoding;
import com.google.cloud.speech.v1.RecognizeResponse;

Then add the following code to do the speech recognization:

 try (SpeechClient speechClient = SpeechClient.create()) {
   RecognitionConfig.AudioEncoding encoding = RecognitionConfig.AudioEncoding.FLAC;
   int sampleRateHertz = 44100;
   String languageCode = "en-US";
   RecognitionConfig config = RecognitionConfig.newBuilder()
     .setEncoding(encoding)
     .setSampleRateHertz(sampleRateHertz)
     .setLanguageCode(languageCode)
     .build();
   String uri = "gs://bucket_name/file_name.flac";
   RecognitionAudio audio = RecognitionAudio.newBuilder()
     .setUri(uri)
     .build();
   RecognizeResponse response = speechClient.recognize(config, audio);
 }

In RecognizeSpeech.java we put a quick start example, which shows how you can use Google Speech API to automatically recognize speech based on a local file.

For an example audio file, you can use the audio.raw file from the samples repository. Note, to play the file on Unix-like system you may use the following command: play -t raw -r 16k -e signed -b 16 -c 1 audio.raw

To get help, follow the instructions in the shared Troubleshooting document.

Cloud Speech uses gRPC for the transport layer.

Java 7 or above is required for using this client.

This library follows Semantic Versioning.

Contributions to this library are always welcome and highly encouraged.

See CONTRIBUTING for more information how to get started.

Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms. See Code of Conduct for more information.

Apache 2.0 - See LICENSE for more information.

Java Version	Status
Java 7
Java 8
Java 8 OSX
Java 8 Windows
Java 11