Audio driver

O. Ouweltjes (Inventor), J.A.M. Nieuwendijk (Inventor), G. Kooijman (Inventor), R.M. Aarts (Inventor)

Research output: PatentPatent publication

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Abstract

An audio driver comprising a diaphragm (101, 103) with a first side and a second side. The diaphragm (101, 103) is coupled to a transducer element (109, 111) on the second side and is arranged to radiate sound. The transducer element (109, 111) converts an electrical input signal into movement of the diaphragm (101, 103). The diaphragm (101, 103) is arranged such that a part of the diaphragm (103) at least partly forms a cavity (113) at the second side and an air conduit (115) is coupled to the cavity (113). The air conduit (115) has a first opening (117) into the cavity and a second opening (119) outside the cavity (113). The air conduit (115) and cavity (113) form a resonator which has a resonance frequency that is less than half a free air acoustic resonance frequency of the audio driver.; The invention may allow simultaneous sound production and an acoustic air flow generation while maintaining an efficient decoupling between the two functionalities.
Original languageEnglish
Patent numberUS 8588449B2
Priority date6/04/10
Publication statusPublished - 19 Nov 2013

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Diaphragms
Air
Transducers
Acoustics
Acoustic waves
Patents and inventions
Resonators

Cite this

Ouweltjes, O., Nieuwendijk, J. A. M., Kooijman, G., & Aarts, R. M. (2013). Audio driver. (Patent No. US 8588449B2).
Ouweltjes, O. (Inventor) ; Nieuwendijk, J.A.M. (Inventor) ; Kooijman, G. (Inventor) ; Aarts, R.M. (Inventor). / Audio driver. Patent No.: US 8588449B2.
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abstract = "An audio driver comprising a diaphragm (101, 103) with a first side and a second side. The diaphragm (101, 103) is coupled to a transducer element (109, 111) on the second side and is arranged to radiate sound. The transducer element (109, 111) converts an electrical input signal into movement of the diaphragm (101, 103). The diaphragm (101, 103) is arranged such that a part of the diaphragm (103) at least partly forms a cavity (113) at the second side and an air conduit (115) is coupled to the cavity (113). The air conduit (115) has a first opening (117) into the cavity and a second opening (119) outside the cavity (113). The air conduit (115) and cavity (113) form a resonator which has a resonance frequency that is less than half a free air acoustic resonance frequency of the audio driver.; The invention may allow simultaneous sound production and an acoustic air flow generation while maintaining an efficient decoupling between the two functionalities.",
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Ouweltjes, O, Nieuwendijk, JAM, Kooijman, G & Aarts, RM 2013, Audio driver, Patent No. US 8588449B2.

Audio driver. / Ouweltjes, O. (Inventor); Nieuwendijk, J.A.M. (Inventor); Kooijman, G. (Inventor); Aarts, R.M. (Inventor).

Patent No.: US 8588449B2.

Research output: PatentPatent publication

TY - PAT

T1 - Audio driver

AU - Ouweltjes, O.

AU - Nieuwendijk, J.A.M.

AU - Kooijman, G.

AU - Aarts, R.M.

PY - 2013/11/19

Y1 - 2013/11/19

N2 - An audio driver comprising a diaphragm (101, 103) with a first side and a second side. The diaphragm (101, 103) is coupled to a transducer element (109, 111) on the second side and is arranged to radiate sound. The transducer element (109, 111) converts an electrical input signal into movement of the diaphragm (101, 103). The diaphragm (101, 103) is arranged such that a part of the diaphragm (103) at least partly forms a cavity (113) at the second side and an air conduit (115) is coupled to the cavity (113). The air conduit (115) has a first opening (117) into the cavity and a second opening (119) outside the cavity (113). The air conduit (115) and cavity (113) form a resonator which has a resonance frequency that is less than half a free air acoustic resonance frequency of the audio driver.; The invention may allow simultaneous sound production and an acoustic air flow generation while maintaining an efficient decoupling between the two functionalities.

AB - An audio driver comprising a diaphragm (101, 103) with a first side and a second side. The diaphragm (101, 103) is coupled to a transducer element (109, 111) on the second side and is arranged to radiate sound. The transducer element (109, 111) converts an electrical input signal into movement of the diaphragm (101, 103). The diaphragm (101, 103) is arranged such that a part of the diaphragm (103) at least partly forms a cavity (113) at the second side and an air conduit (115) is coupled to the cavity (113). The air conduit (115) has a first opening (117) into the cavity and a second opening (119) outside the cavity (113). The air conduit (115) and cavity (113) form a resonator which has a resonance frequency that is less than half a free air acoustic resonance frequency of the audio driver.; The invention may allow simultaneous sound production and an acoustic air flow generation while maintaining an efficient decoupling between the two functionalities.

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Ouweltjes O, Nieuwendijk JAM, Kooijman G, Aarts RM, inventors. Audio driver. US 8588449B2. 2013 Nov 19.