Hindi phonautograph का अर्थ हिंदी में

• ध्वनि- लेखी

English phonautograph meaning in English  •  phonautograph का अर्थ अंग्रेजी में

Noun

• An instrument by means of which a sound can be made to produce a visible trace or record of itself. It consists essentially of a resonant vessel, usually of paraboloidal form, closed at one end by a flexible membrane. A stylus attached to some point of th