A string specifying the content-type ID. Currently, “audio/wav” and “audio/mp3” are available. The default value is "audio/wav".
| Namespace | http://api.microsofttranslator.com/V2 | 

|  | format optional xs:string
 A string specifying the content-type ID. Currently, “audio/wav” and “audio/mp3” are available. The default value is "audio/wav". | 
|  |