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新闻动态当前位置:首页-济南汽车音响改装给大家讲述吸音和隔音
    济南汽车音响改装给大家讲述吸音和隔音
    更新日期:2015-3-6 17:57:14    浏览次数:34次

    济南汽车音响改装http://www.sdcarmusic.com/谈到大家由于对噪声控制的手段缺乏了解,“吸音”和“隔音”常常被混淆了。下面济南孚卡悦听汽车音响改装的专家就给大家详细阐述一下这两个概念的不同之处。
    Jinan car audio conversion tool comes to us because of the lack of understanding of noise control, "acoustic" and "noise" is often confused. Jinan Fu Yue card below modified car stereo to listen to experts give you elaborate on the differences between these two concepts at.

    济南汽车音响改装介绍吸音材料和隔音材料的区别在于,吸音材料着眼于声源一侧反射声能的大小,目标是反射声能要小。隔音材料着眼于入射声源另一侧的透射声能的大小,目标是透射声能要小。吸音材料对入射声能的衰减吸收,一般只有十分之几。因此其吸音能力即声耗系数可以用小数表示;而隔音材料可使透射声能衰减到入射声能的3/10~4/10或更小,为方便表达,其隔声量用分贝的计量方法表示。
    Jinan car audio conversion describes the differences between sound-absorbing materials and insulation materials that focus on the size of the sound absorbing material source side of the reflected sound energy, the goal is reflected

    sound can be small. Insulation materials focusing on the other side of the sound source is incident acoustic energy transmission size, the transmission of acoustic energy to the target is small. Sound-absorbing materials on the attenuation of incident sound energy absorbed, usually only a few tenths. So its sound absorbing capacity consumption coefficient that can be expressed as a decimal; and insulation materials enables the transmission of sound energy to

    incident sound energy attenuation 3/10 1-4 / 10 or less, to facilitate the expression of its measurement methods decibels of sound insulation representation.

    济南汽车音响改装提醒对于隔音材料要减弱透射声能,阻挡声音的传播,就不能如同吸声材料那样多孔、疏松、透气;相反它的材质应该是重而密实的,如铅板、钢板等一类材料。隔音材料材质的要求是密实无孔隙或缝隙,有较大的重量。由于这类隔声材料密实,难于吸收和透过声能而反射能强,所以它的吸声性能差。
    Jinan car audio conversion reminder for soundproofing materials to be reduced transmission of acoustic energy, stop the spread of the sound, it is not as porous as sound-absorbing material, loose, breathable; on the contrary it should be heavy and dense materials, such as lead, steel and other one class materials. Insulation material is dense material requirements without pores or slits, a greater weight. Since this type of insulation material is dense and difficult to absorb through the reflected sound energy can be strong, so the difference between its sound absorption performance.

    济南汽车音响改装介绍在汽车噪音处理上,吸音和隔音所解决的目标和侧重点不同,吸音所解决的目标是减弱汽车噪音在驾驶室内的反复反射,也即减弱驾驶的混响声,缩短混响声的延续时间即混响时间;在汽车行驶过程中连续噪音的情况下,这种减弱表现为室内噪声级的降低。但由于吸音材料不可能裸露在汽车驾驶室内(有内饰板),内饰板会大量把汽车噪音直接反射,从而使吸音效果大幅度降低,所以吸音在降低汽车噪音的环节中,所占比重是最小的,效果也是最不明显的;最有效的吸音部位是在汽车的引擎仓,正确的使用吸音材料可以大幅度的降低汽车发动仓的共鸣噪音!
    Jinan car audio conversion introduces noise in the car handling, objectives and focus sound absorption and sound insulation addressed different acoustic goal is to weaken the resolve of the car noise is repeatedly reflected in the cab, that reduced driving reverberant shorten reverberant the duration of that reverberation time; in the case of cars with the process of continuous noise, which weakened the performance to reduce interior noise levels. But could not because of sound-absorbing material exposed in the car cab (with trim plate), interior panels will be a lot of noise direct reflection of the car, allowing a significant reduction in sound-absorbing effect, so the sound-absorbing part in reducing vehicle noise, the proportion of is minimal, the effect is most obvious; the most effective sound-absorbing parts in the automotive engine compartment, the correct use of sound-absorbing materials can greatly reduce car launch warehouse resonance noise!

    济南汽车音响改装http://www.sdcarmusic.com/总结说利用隔音材料隔绝汽车噪声的效果比采用吸音材料的降低汽车噪音效果要好得多。吸音和隔音有着本质上的区别,有效降低汽车噪音,一定要从概念上将减振材料、隔音材料、吸音材料正确区别开来。
    Jinan car audio conversion concluded that the use of isolated car noise deadening effect than the use of sound-absorbing material to reduce vehicle noise effect is much better. Sound-absorbing and sound fundamentally different, and effectively reduce vehicle noise, vibration conceptually from certain materials, insulation materials, sound-absorbing material properly distinguished.

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