Any small speaker will emit the sound just by connecting to the function generator with two wires.

Her speaker emitted a small snik as he severed the connection.

A speaker in the wall above the kitchen table emitted an incongruous chime.

The speaker emitted a curious coughing buzz, then: "Acknowledged and filed."

The speakers emit sound frequencies that are below the threshold of human hearing but strong enough to make the Slinkys move.

To complete the illusion, a speaker embedded in the device emits the appropriate masticating sound.

But after a time, and while a speaker emitted the noise of rustling papers, the needle began to move slowly - downward.

After a long time a speaker suddenly emitted a blast of martial music.

Before anyone in the room could speak, the speakers emitted the metallic pop of a toggled pickup.

The speakers emitted a rough wheeze of respiration, as if she'd dropped off to sleep.