AWS services or capabilities described in AWS Documentation may vary by region/location. Click Getting Started with Amazon AWS to see specific differences applicable to the China (Beijing) Region.
Allows the creation of an asynchronous synthesis task, by starting a new SpeechSynthesisTask.
This operation requires all the standard information needed for speech synthesis,
plus the name of an Amazon S3 bucket for the service to store the output of the synthesis
task and two optional parameters (OutputS3KeyPrefix and SnsTopicArn).
Once the synthesis task is created, this operation will return a SpeechSynthesisTask
object, which will include an identifier of this task as well as the current status.
The SpeechSynthesisTask object is available for 72 hours after starting the
asynchronous synthesis task.
For .NET Core this operation is only available in asynchronous form. Please refer to StartSpeechSynthesisTaskAsync.
Namespace: Amazon.Polly
Assembly: AWSSDK.Polly.dll
Version: 3.x.y.z
public virtual StartSpeechSynthesisTaskResponse StartSpeechSynthesisTask( StartSpeechSynthesisTaskRequest request )
Container for the necessary parameters to execute the StartSpeechSynthesisTask service method.
| Exception | Condition |
|---|---|
| EngineNotSupportedException | This engine is not compatible with the voice that you have designated. Choose a new voice that is compatible with the engine or change the engine and restart the operation. |
| InvalidS3BucketException | The provided Amazon S3 bucket name is invalid. Please check your input with S3 bucket naming requirements and try again. |
| InvalidS3KeyException | The provided Amazon S3 key prefix is invalid. Please provide a valid S3 object key name. |
| InvalidSampleRateException | The specified sample rate is not valid. |
| InvalidSnsTopicArnException | The provided SNS topic ARN is invalid. Please provide a valid SNS topic ARN and try again. |
| InvalidSsmlException | The SSML you provided is invalid. Verify the SSML syntax, spelling of tags and values, and then try again. |
| LanguageNotSupportedException | The language specified is not currently supported by Amazon Polly in this capacity. |
| LexiconNotFoundException | Amazon Polly can't find the specified lexicon. This could be caused by a lexicon that is missing, its name is misspelled or specifying a lexicon that is in a different region. Verify that the lexicon exists, is in the region (see ListLexicons) and that you spelled its name is spelled correctly. Then try again. |
| MarksNotSupportedForFormatException | Speech marks are not supported for the OutputFormat selected. Speech marks are only available for content in json format. |
| ServiceFailureException | An unknown condition has caused a service failure. |
| SsmlMarksNotSupportedForTextTypeException | SSML speech marks are not supported for plain text-type input. |
| TextLengthExceededException | The value of the "Text" parameter is longer than the accepted limits. For the SynthesizeSpeech API, the limit for input text is a maximum of 6000 characters total, of which no more than 3000 can be billed characters. For the StartSpeechSynthesisTask API, the maximum is 200,000 characters, of which no more than 100,000 can be billed characters. SSML tags are not counted as billed characters. |
.NET Framework:
Supported in: 4.5 and newer, 3.5