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Acoustic absorber, acoustic transducer, and method for producing an acoustic absorber or an acoustic transducer
Acoustic absorber, acoustic transducer, and method for producing an acoustic absorber or an acoustic transducer
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机译:吸声器,声换能器以及制造吸声器或声换能器的方法
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摘要
The invention relates to an acoustic absorber comprising an absorption layer (1a, 1b) composed of an open-pored porous material. According to the invention, the open-pored porous material is flexurally stiff in such a way that the absorption layer (1a, 1b) is stimulated to flexurally oscillate when sound waves impinge on the absorption layer and the absorber can absorb sound waves of a first frequency range because of the inflow of air into the open-pored porous material of the absorption layer and can absorb sound waves of a second frequency range that comprises lower frequencies than the first frequency range because of the stimulation of flexural oscillations of the absorption layer. The invention further relates to an acoustic transducer and to a method for producing an acoustic absorber or an acoustic transducer.
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机译:本发明涉及一种吸声体,其包括由开口构成的吸收层( 1 B> a, I> 1 B> b I>)。 -多孔材料。根据本发明,开孔的多孔材料以这样的方式弯曲弯曲,使得吸收层( 1 B> a, I> 1 B> b I>)会发生挠曲振荡,并且由于空气流入吸收层的开孔多孔材料中,吸收体可以吸收第一频率范围的声波,并且由于刺激了吸收层的挠曲振荡,声波可以吸收包括比第一频率范围更低的频率的第二频率范围的声波。本发明还涉及一种声换能器以及一种用于制造吸声器或声换能器的方法。
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