Description: Alien drone sound effect.

Description: Many sound points that move on an obsessive sound drone

Description: Bright Extended Harmonica type sound that sustains

Description: Fast pulse with high frequency, stubborn, continuous sound.

Description: Rotating sound and robotic, futuristic machine.

Description: Pulse with modulated frequency,acid, robotics, video games.

Description: sound recorded by FXProSound. Usable in media, game, foley. Acoustic: processed, envelopped, normalized.