electronic equipment that converts sound into electrical signals that can be transmitted over distances and then converts received signals back into sounds | the face of a timepiece; graduated to show the hours |
electro-acoustic transducer for converting electric signals into sounds; it is held over or inserted into the ear | a disc on a telephone that is rotated a fixed distance for each number called |
(phonetics) an individual sound unit of speech without concern as to whether or not it is a phoneme of some language | the circular graduated indicator on various measuring instruments |
| the control on a radio or television set that is used for tuning |