Anti-sound

Anti-sound is a sound wave used to cancel or nullify other sounds.

Fiction

The Transformers cartoon

The citizens of Eurythma used anti-sound to cancel out the destructive melody stolen from them by Soundwave. Carnage in C-Minor

Notes

• In the real world, anti-sound devices (called active noise control speakers) are used in areas where undesirable sounds originate (such as traffic). The concept was introduced in Arthur C. Clarke's 1957 short story "Silence Please". Clarke intended it as a humorously improbable device — with dire consequences for the inventor.

External links

• Active noise control at Wikipedia