Update wording of destinationPath

Author: Zhifan Zhang

articles/ai-services/speech-service/batch-synthesis-properties.md

@@ -40,7 +40,7 @@ Batch synthesis properties are described in the following table.
 |`properties.concatenateResult`|Determines whether to concatenate the result. This optional `bool` value ("true" or "false") is "false" by default.|
 |`properties.decompressOutputFiles`|Determines whether to unzip the synthesis result files in the destination container. This property can only be set when the `destinationContainerUrl` property is set. This optional `bool` value ("true" or "false") is "false" by default.|
 |`properties.destinationContainerUrl`|The batch synthesis results can be stored in a writable Azure container. If you don't specify a container URI with [shared access signatures (SAS)](/azure/storage/common/storage-sas-overview) token, the Speech service stores the results in a container managed by Microsoft. SAS with stored access policies isn't supported. When the synthesis job is deleted, the result data is also deleted.<br/><br/>This optional property isn't included in the response when you get the synthesis job.|
-|`properties.destinationPath`|The prefix path where batch synthesis results can be stored with. If you don't specify a prefix path, the default prefix path is `YourSpeechResourceId/YourSynthesisId`.<br/><br/>This optional property can only be set when the `destinationContainerUrl` property is set.|
+|`properties.destinationPath`|The prefix path for storing batch synthesis results. If no prefix path is provided, a system-generated path will be used.<br/><br/>This property is optional and can only be set when the `destinationContainerUrl` property is specified.|
 |`properties.durationInMilliseconds`|The audio output duration in milliseconds.<br/><br/>This property is read-only.|
 |`properties.failedAudioCount`|The count of batch synthesis inputs to audio output failed.<br/><br/>This property is read-only.|
 |`properties.outputFormat`|The audio output format.<br/><br/>For information about the accepted values, see [audio output formats](rest-text-to-speech.md#audio-outputs). The default output format is `riff-24khz-16bit-mono-pcm`.|

articles/ai-services/speech-service/text-to-speech-avatar/batch-synthesis-avatar-properties.md

@@ -51,7 +51,7 @@ The following table describes the batch synthesis job properties.
 | lastActionDateTime       | The most recent date and time when the status property value changed.<br/><br/>This property is read-only.|
 | properties               | A defined set of optional batch synthesis configuration settings.  |
 | properties.destinationContainerUrl | The batch synthesis results can be stored in a writable Azure Blob Storage container. If you don't specify a container URI with [shared access signatures (SAS)](/azure/storage/common/storage-sas-overview) token, the Speech service stores the results in a container managed by Microsoft. SAS with stored access policies isn't supported. When the synthesis job is deleted, the result data is also deleted.<br/><br/>This property is required when generating multiple videos in one job. For single video generation, this property is optional. <br/><br/>This property is not included in the response when you get the synthesis job.|
-| properties.destinationPath |The prefix path where batch synthesis results can be stored with. If you don't specify a prefix path, the default prefix path is `YourSpeechResourceId/YourSynthesisId`.<br/><br/>This optional property can only be set when the `destinationContainerUrl` property is set.|
+| properties.destinationPath | The prefix path for storing batch synthesis results. If no prefix path is provided, a system-generated path will be used.<br/><br/>This property is optional and can only be set when the `destinationContainerUrl` property is specified.|
 | properties.timeToLiveInHours    |A duration in hours after the synthesis job is created, when the synthesis results will be automatically deleted. The maximum time to live is 744 hours. The date and time of automatic deletion, for synthesis jobs with a status of "Succeeded" or "Failed" is calculated as the sum of the lastActionDateTime and timeToLive properties.<br/><br/>Otherwise, you can call the [delete synthesis method](../batch-synthesis.md#delete-batch-synthesis) to remove the job sooner. |
 | status                   | The batch synthesis processing status.<br/><br/>The status should progress from "NotStarted" to "Running", and finally to either "Succeeded" or "Failed".<br/><br/>This property is read-only.|