1. a subordinate or supplementary part, object, or the like, used mainly for convenience, attractiveness, safety, etc., as a spotlight on an automobile or a lens cover on a camera. 2. an article or set of articles of dress, as gloves, earrings, or a scarf, that adds completeness, convenience, ...
Headphones are a pair of small loudspeakers, or less commonly a single speaker, with a way of holding them close to a user's ears and a means of connecting them to a signal source such as an audio amplifier, radio or CD player.
A device (transducer) used to convert sound waves into a varying electric current; normally fed into an amplifier and either recorded or broadcast.
A device, especially one using transistors or electron tubes, that produces amplification of an electrical signal.
Electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance.
Distributed Mode Loudspeaker (DML) is a flat panel loudspeaker technology, developed by NXT[citation needed], in which sound is produced by inducing uniformly distributed vibration modes in the panel through a special electro-acoustic exciter. Distributed mode loudspeakers function differently ...
Situation where the demand for a product does not increase or decrease correspondingly with a fall or rise in its price. From the supplier's viewpoint, this is a highly desirable situation because price and total revenue are directly related; an increase in price increases total revenue despite a ...
