| 摘要 |
The invention concerns an acoustic transducer generating an acoustic radiation by compression and expansion of an air mass located between a mobile membrane and a fixed surface or between two mobile membranes. The invention concerns an acoustic transducer or speaker of the electrodynamic of the type designed to emit sound waves from a modulated electric signal. The specific arrangement of the components of the inventive transducer enables an acoustic radiation (1) to be generated, by compression and expansion of the air mass located between a mobile membrane (7) and a fixed surface or anvil (10) which are characterized by being placed opposite each other. The direction of the resulting sound wave (1) is perpendicular to the membrane displacement direction (2). That mode for generating a sound wave enables production of transducers provided with specific directivity characteristics. |
