Amazon Polly
Developer Guide

StartSpeechSynthesisTask

The following Java code sample show how to use Java-based applications to synthesize a long speech (up to 100,000 billed characters) and store it directly in an Amazon S3 bucket.

For more information, see the reference for StartSpeechSynthesisTask API.

package com.amazonaws.parrot.service.tests.speech.task; import com.amazonaws.parrot.service.tests.AbstractParrotServiceTest; import com.amazonaws.services.polly.AmazonPolly; import com.amazonaws.services.polly.model.*; import org.awaitility.Duration; import java.util.concurrent.TimeUnit; import static org.awaitility.Awaitility.await; public class StartSpeechSynthesisTaskSample { private static final int SYNTHESIS_TASK_TIMEOUT_SECONDS = 300; private static final AmazonPolly AMAZON_POLLY_CLIENT = AmazonPollyClientBuilder.defaultClient(); private static final String PLAIN_TEXT = "This is a sample text to be synthesized."; private static final String OUTPUT_FORMAT_MP3 = OutputFormat.Mp3.toString(); private static final String OUTPUT_BUCKET = "synth-books-buckets"; private static final String SNS_TOPIC_ARN = "arn:aws:sns:eu-west-2:561828872312:synthesize-finish-topic"; private static final Duration SYNTHESIS_TASK_POLL_INTERVAL = Duration.FIVE_SECONDS; private static final Duration SYNTHESIS_TASK_POLL_DELAY = Duration.TEN_SECONDS; public static void main(String... args) { StartSpeechSynthesisTaskRequest request = new StartSpeechSynthesisTaskRequest() .withOutputFormat(OUTPUT_FORMAT_MP3) .withText(PLAIN_TEXT) .withTextType(TextType.Text) .withVoiceId(VoiceId.Amy) .withOutputS3BucketName(OUTPUT_BUCKET) .withSnsTopicArn(SNS_TOPIC_ARN); StartSpeechSynthesisTaskResult result = AMAZON_POLLY_CLIENT.startSpeechSynthesisTask(request); String taskId = result.getSynthesisTask().getTaskId(); await().with() .pollInterval(SYNTHESIS_TASK_POLL_INTERVAL) .pollDelay(SYNTHESIS_TASK_POLL_DELAY) .atMost(SYNTHESIS_TASK_TIMEOUT_SECONDS, TimeUnit.SECONDS) .until( () -> getSynthesisTaskStatus(taskId).equals(TaskStatus.Completed.toString()) ); } private static SynthesisTask getSynthesisTask(String taskId) { GetSpeechSynthesisTaskRequest getSpeechSynthesisTaskRequest = new GetSpeechSynthesisTaskRequest() .withTaskId(taskId); GetSpeechSynthesisTaskResult result =AMAZON_POLLY_CLIENT.getSpeechSynthesisTask(getSpeechSynthesisTaskRequest); return result.getSynthesisTask(); } private static String getSynthesisTaskStatus(String taskId) { GetSpeechSynthesisTaskRequest getSpeechSynthesisTaskRequest = new GetSpeechSynthesisTaskRequest() .withTaskId(taskId); GetSpeechSynthesisTaskResult result =AMAZON_POLLY_CLIENT.getSpeechSynthesisTask(getSpeechSynthesisTaskRequest); return result.getSynthesisTask().getTaskStatus(); } }