இந்தக் கட்டுப்பாட்டை மாற்றினால் இந்தப் பக்கம் தானாக மாற்றப்படும்
Have texts read out loud in Messages on Mac
Messages can speak the text in a transcript, the Messages window or a profile window.
In the Messages app
on your Mac, select a conversation or select text to be read.Choose Edit > Speech > Start Speaking.
To make the speaking stop, choose Edit > Speech > Stop Speaking.
To change the computer’s speaking voice, choose Apple menu 
> System Preferences, click Accessibility, then click Speech. Click the Help button 
for more information.