| 摘要 |
An apparatus is disclosed comprising a diaphragm for use in a loudspeaker or a microphone. The diaphragm may be constructed as a sealed structure which forms two chambers. A vacuum can be formed in the two chambers. A gas can be added to each of the chambers. The gas may be an inert gas such as neon or krypton. The diaphragm may be comprised of a material having a low density to stiffness ratio. The diaphragm may be comprised of diamond, beryllium, magnesium, or carbon fiber. The structure of the diaphragm may include two portions. The first portion may be in the shape of an indented donut having a cross section of two partial ellipses. The second portion may have an extended oval cross section. The two portions of the diaphragm may alternatively be comprised of a substantially egg shaped portion and a substantially cylindrical portion with a cone portion. The diaphragm may be constructed by a process such as physical vapor deposition or the like.
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