# StartSpeechSynthesisStreamEventStream


Outbound event stream that contains synthesized audio data and stream status events.

## Contents


 ** AudioEvent **   <a name="polly-Type-StartSpeechSynthesisStreamEventStream-AudioEvent"></a>
An audio event containing synthesized speech.  
Type: [AudioEvent](API_AudioEvent.md) object  
Required: No

 ** ServiceFailureException **   <a name="polly-Type-StartSpeechSynthesisStreamEventStream-ServiceFailureException"></a>
An unknown condition has caused a service failure.  
Type: Exception  
HTTP Status Code: 500  
Required: No

 ** ServiceQuotaExceededException **   <a name="polly-Type-StartSpeechSynthesisStreamEventStream-ServiceQuotaExceededException"></a>
An exception indicating a service quota would be exceeded.  
Type: Exception  
HTTP Status Code: 402  
Required: No

 ** StreamClosedEvent **   <a name="polly-Type-StartSpeechSynthesisStreamEventStream-StreamClosedEvent"></a>
An event, with summary information, indicating the stream has closed.  
Type: [StreamClosedEvent](API_StreamClosedEvent.md) object  
Required: No

 ** ThrottlingException **   <a name="polly-Type-StartSpeechSynthesisStreamEventStream-ThrottlingException"></a>
An exception indicating the request was throttled.  
Type: Exception  
HTTP Status Code: 400  
Required: No

 ** ValidationException **   <a name="polly-Type-StartSpeechSynthesisStreamEventStream-ValidationException"></a>
An exception indicating the input failed validation.  
Type: Exception  
HTTP Status Code: 400  
Required: No

## See Also


For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/polly-2016-06-10/StartSpeechSynthesisStreamEventStream) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/polly-2016-06-10/StartSpeechSynthesisStreamEventStream) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/polly-2016-06-10/StartSpeechSynthesisStreamEventStream)