Multi-assistant natural language input processing

A system comprising:

• at least one processor;
• and
• at least one memory comprising instructions that, when executed by the at least one processor, cause the system to:
• receive, by a system corresponding to at least a first assistant voice and a second assistant voice, first audio data representing a first spoken natural language input;
• perform speech processing using the first audio data to determine a first portion corresponding to a first command;
• determine first output data responsive to the first spoken natural language input;
• based at least in part on the first command, select first data configured to generate synthesized speech in the first assistant voice;
• perform speech synthesis processing using the first data and the first output data to generate second audio data;
• and
• cause the second audio data to be output.