After one week hacking I finally found out how to play sound or do text-to-speech on Odroid U3.
What you need to do is simply:
then when you type
groups odroid , you will see that the user odroid is in the audio group. Then you can play sound through the 3.5mm jack 😀
Now you can have fun playing music and do text-to-speech using espeak or festival.
Additionally, if you want to use ROS sound_play package to do text-to-speech, according to this, you need to install jackd:
add following in its end:
and start jackd by
You can put this in your startup programs.