tts
The tts command stands for Text To Speech. As the name suggests, it is used for converting a text input to an audio output.
Usage
tts <text goes here>
Yantra Launcher uses Android's installed Text-to-Speech service for this. That means the actual voice engine is the one selected or provided as the default on your device; it is not necessarily Google TTS. The engine is initialized for the request and shut down after speaking to preserve resources.
Example
tts Yantra Launcher is cool