The Speaker API provides means to control computer's built-in beeper speaker.

\begin{tabularx}{\textwidth}{l l X}
	\textbf{\large Function} & \textbf{\large Return} & \textbf{\large Description}
	\\ \\
	\endhead
	speaker.enqueue(len: int, freq: num) & nil & Enqueues speaker driving information. Queues will be started automatically.
	\\ \\
	speaker.clear() & nil & Clears speaker queue.
\end{tabularx}