Sound

The Ninth Doctor repelling the Shalka's sound attack with a tray. (WC: Scream of the Shalka ^[+]Loading...["Scream of the Shalka (webcast)"])

Sound was vibration that was audible to the ear.

Some lifeforms were highly sensitive to loud noise. These included the Sensorites, (TV: The Sensorites ^[+]Loading...["The Sensorites (TV story)"], PROSE: The Monsters from Earth ^[+]Loading...["The Monsters from Earth (short story)"]) the Voord, (PROSE: The Fishmen of Kandalinga ^[+]Loading...["The Fishmen of Kandalinga (short story)"]) the Ethereals in their cloud form (PROSE: The Cloud Exiles ^[+]Loading...["The Cloud Exiles (short story)"]) and the Verdants. (COMIC: Mission for Duh ^[+]Loading...["Mission for Duh (comic story)"])

The sound of static power pulses was associated with the Daleks. (COMIC: The Only Good Dalek ^[+]Loading...["The Only Good Dalek (comic story)"])

During the Dummy Massacre, (PROSE: Dummy Massacre ^[+]Loading...["Dummy Massacre (short story)"]) when the London Eye was activated by the Nestene Consciousness (TV: Rose ^[+]Loading...["Rose (TV story)"], PROSE: Operation Mannequin ^[+]Loading...["Operation Mannequin (short story)"]) at least one person on the Eye found themselves unable to see due to the brightness and unable to talk because of the noise. (PROSE: Dummy Massacre ^[+]Loading...["Dummy Massacre (short story)"])

A sonic screwdriver could project sound to lock or unlock doors. (TV: The Mutants ^[+]Loading...["The Mutants (TV story)"], Aliens of London ^[+]Loading...["Aliens of London (TV story)"])

Sound waves could reflect off of metal objects. Sonar systems used this property to determine the distance to an object. (PROSE: Doctor Who and the Sea-Devils ^[+]Loading...["Doctor Who and the Sea-Devils (novelisation)"])

Beckett Mariner: "This doesn't sound like a Dominion thing... I think we are in another universe." (GAME: A Trek to Skaro ^[+]Loading...["A Trek to Skaro (episode)"])

Upon being brought to Skaro, Brad Boimler - a resident of another universe - asked if they were in the Gamma Quadrant, to which Beckett Mariner observed that it did not sound like "a Dominion thing", suggesting correctly that they were in another universe. (GAME: A Trek to Skaro ^[+]Loading...["A Trek to Skaro (episode)"])