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US 6,904,154 B2Granted
Acoustic device
AssigneeNew Transducers Limited
InventorsHenry Firouz Azima, Martin Colloms, Neil Harris
Life of this patent
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AssigneeNew Transducers Limited
InventorsHenry Firouz Azima, Martin Colloms, Neil Harris
Estimating the term…
Acoustic device including a member extending transversely of its thickness and capable of sustaining bending waves at least over an intendedly consequentially acoustically active area of the transverse extent of said member, the member having, by reason of orderly design methodology disclosed and claimed, a distribution of resonant modes of its natural bending wave vibration at least over said area that is dependent on values of particular parameters of said members, including geometrical configuration and directional bending stiffness(es), which values have been selected to predetermine said distribution of natural resonant modes being consonant with required achievable acoustic action of said member for operation of said device over a desired operative acoustic frequency range.
A method of making a resonant acoustic object adapted for operation over an operative frequency range, the object comprising a member extending transversely of its thickness and capable of sustaining bending waves over an active area of the transverse extent of the member, wherein the distribution of resonant modes of bending wave vibration over the active area of the member depends on the values of physical parameters of geometry, bending stiffness, areal mass distribution and damping of the member, the method comprising:
A method of making a loudspeaker adapted for operation over an operative frequency range, the loudspeaker including a member extending transversely of its thickness and capable of sustaining bending waves over an active area of the transverse extent of the member, and a transducer coupled to the member to vibrate the member, wherein the member when vibrating has a desired frequency distribution of resonant bending wave modes over the active area of the member, the method comprising:
A method of making a loudspeaker adapted for operation over an operative frequency range, the loudspeaker including a member extending transversely of its thickness and capable of sustaining bending waves over an active area of the transverse extent of the member, and a transducer coupled to the member to vibrate the member, wherein the distribution of resonant modes of bending wave vibration over the active area of the member depends on the values of physical parameters of geometry, bending stiffness, areal mass distribution and damping of the member, the method comprising:
Dependencies are inferred from the claim text.