I am trying to create a new voice for my final year project in university. Hence I am using Festival tts and festvox but when i install festival an error coming. it shows flowing image. how can i resolve
Your version of festival probably has no default voice set. You can do
sudo apt-get install festvox-rablpc16k
And set the default voice as in festival console
(set! default_voice 'voice_rab_diphone)
You can find more details in https://ubuntuforums.org/showthread.php?t=677277