I don't have a robot, but I would like to have Pepper say "Hello everyone" in Choregraphe, for example. The speech bubble becomes visible, but no sound is played. How can I make the sound play in Choregraphe?
First, make sure the volume of your robot is up. Then, when you will run your Choregraphe behavior, it's the robot that will be talking, not Choregraphe.
If you are working with a virtual robot however, it does not support producing speech.