Dialog Display System With Sound
dialogdisplayer.blogspot.com/
Features

Letter by letter display:
-Display your character's dialog one letter at a
time instead of walls of text
-Emulate computer or typewriter typing

Play sounds per letter or per syllable:
-Play a tone each letter like a keyboard
-Emulate speech by having a sound each syllable

Evoke mood and emotion by using musical scales:
-Give a sad character a minor key
-Give a robotic character a chromatic key

-Let the notes ring out and blend into each other
Rich text support (supports multiple tags at a time)

Fully customizable:
-Fully documented source code included
-Use your own sounds
-Make your own UI with either UnityUI or TextMesh Pro
-Make your own scales
-Change anything during runtime through the script

Note: TextMesh Pro features require you to have TextMesh Pro installed