How do I change my agent's voice to australian male voice?

[Irakli Beselidze]

It's not possible to do it using in DF CX console, but can you provide detailed instructions on how to do it? 

[Svetlana Pastukhova]

You can change voice settings in the API requests. 

Please take look at the following example for the Streaming Detect Intent API method: https://cloud.google.com/dialogflow/cx/docs/how/detect-intent-stream.