among the first phonographic recording devices, composed of a horn or barrel concentrating noise waves onto a membrane to which a hog's bristle had been attached, evoking the bristle to go so enabling it to inscribe a visual medium, that could transcribe noise to a visible medium but had no methods to play back the sound after it had been recorded.
An instrument through which a sound can be meant to produce a visible trace or record of it self. It consists essentially of a resonant vessel, frequently of paraboloidal type, shut at one end by a flexible membrane. A stylus mounted on some point of membrane layer records the motions associated with the second, because it vibrates, upon a moving cylinder or dish.
An instrument for registering the vibrations of a sounding body.
A theory or system of social reform which contemplates a complete reconstruction of society with a more just and equitable distribution of property and labor In popular usage the term is often employed to indicate any lawless revolutionary social scheme See Communism Fourierism Saint Simonianism forms of socialism...