Device for generating a medium stream
AssigneeNXP B.V.
InventorJosef Lutz
Life of this patent
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Abstract
The invention relates to a device for generating a medium stream, having a chamber, which chamber comprises chamber walls lying opposite one another and at least one medium opening for the medium stream, which medium stream can be generated in the chamber by a diaphragm, which diaphragm, in an inactive operating state of the device, is arranged substantially untensioned in the chamber between the chamber walls lying opposite one another, and associated with which diaphragm is a drive device, responsive to electrical drive signals, for driving the diaphragm to deform the same, the drive device being designed to impose a deformation on the diaphragm in an active operating state of the device, during which deformation the diaphragm has an inner mechanical tension.
Claims30
An audio speaker device for generating an audio medium stream representing audio data, the device comprising:
- a chamber that comprises chamber walls lying opposite one another and at least one medium opening for the audio medium stream,
- a diaphragm to generate the audio medium stream, the diaphragm being arranged substantially untensioned in the chamber between the chamber walls in an inactive operating state of the device,
- an audio driver circuit, responsive to electrical drive signals corresponding to the audio data, for driving the diaphragm to impose a deformation on the diaphragm via mechanical tension to generate audible sound corresponding to the audio data in an active operating state of the device.
A device for generating a medium stream including sound waves, the device comprising:
- a chamber having chamber walls lying opposite one another and at least one medium opening therebetween for passing a medium stream;
- a diaphragm and extending laterally between the opposing chamber walls, the diaphragm to generate audio, corresponding to the sound waves from the medium stream, being substantially untensioned in the chamber between the chamber walls in an inactive state;
- electrodes on each of the opposing chamber walls and responsive to electrical drive signals by imposing a deformation on the diaphragm in an active operating state of the device, during which deformation the diaphragm has an inner mechanical tension, the deformation causing fluid flow in the chamber in a direction that is about parallel to the chamber walls to generate sound corresponding to the sound waves from the medium stream, that is audible by a human ear.
Dependencies are inferred from the claim text.