No title - String trick.
Probably filmed at Pathe studios, London.
Various shots of a man making a loop in a piece of string. He puts it over a girl's head and she puts her hands over her ears. He rubs the string and it sounds like gusts of wind to her, he scrapes his nail down the...
A little quiz asks us to guess what different sounds are, played over a blank screen.
Guessing game quiz which involves everyday sounds being played over a blank screen.
A quiz asks us to guess what different sounds are, played over intertitles.
Mystery noises are played against a black screen - the source of the sound is then revealed.
A man is wired up to a machine to test his emotional reactions.
Japanese gong which holds sound for ten minutes.
Footage of sound recordists demonstrating how sound recordings are played back. London.
Scientists test the latest radio speaker in an echo free chamber, London.