Tone generator, 440 Hz, by Dancol Engineering Ltd., used in the Queen Elizabeth Hall, London, from 1967 to about 1998 to provide warning of the start of performances: the mechanism uses a metal gong struck by a hammer and fitted with a transducer connected to an amplifier.
Details
- Category:
- Acoustics
- Object Number:
- 1999-884
- Materials:
- metals
- Measurements:
-
240 x 600 x 470 mm
- type:
- tone generator
- credit:
- Queen Elizabeth Hall
