实(shi)际工程中的(de)（半(ban)(ban)(ban)）自由(you)场空(kong)间是指(zhi)对截(jie)止(zhi)频(pin)率(lv)(lv)以上的(de)声(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)，消(xiao)声(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)室(shi)(shi)内(nei)为（半(ban)(ban)(ban)）自由(you)场空(kong)间，截(jie)止(zhi)频(pin)率(lv)(lv)越低，尖劈(pi)的(de)长度(du)(du)要(yao)求就越大(da)。一般而言，尖劈(pi)的(de)长度(du)(du)适用(yong)于1/4波(bo)长理论。满足国(guo)际标准 ISO 3745 “ Acoustics-Determination of sound power levels of noise sources---Precision methods for anechoic and semi-anechoic rooms” 和国(guo)家(jia)标准GB6882－86《噪(zao)声(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源声(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)功率(lv)(lv)级的(de)测定消(xiao)声(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)室(shi)(shi)和半(ban)(ban)(ban)消(xiao)声(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)室(shi)(shi)精(jing)密法》）中规定要(yao)求。 根据国(guo)标GB6882－86＜＜声(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)学 噪(zao)声(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源声(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)功率(lv)(lv)级的(de)测定消(xiao)声(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)室(shi)(shi)和半(ban)(ban)(ban)消(xiao)声(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)室(shi)(shi)精(jing)密法＞＞，在测试频(pin)率(lv)(lv)范围内(nei)，背景噪(zao)声(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)的(de)声(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)压(ya)级至少比被测声(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源的(de)声(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)压(ya)级低6dB，较好低12dB。一般消(xiao)音室(shi)(shi)的(de)建筑造型(xing)几乎不用(yong)球(qiu)状(zhuang)、柱(zhu)状(zhuang)或圆(yuan)弧面(mian)的(de)形状(zhuang)。江苏半(ban)(ban)(ban)消(xiao)音室(shi)(shi)厂家(jia)供(gong)应(ying)

消(xiao)音(yin)(yin)(yin)(yin)室(shi)(shi)(shi)(shi)应(ying)用于城市(shi)区域民(min)用建筑、空调机房、车(che)库(ku)、展馆(guan)、宾馆(guan)、饭店、商(shang)场超市(shi)、医院、写字楼等(deng)场所(suo)环境的噪(zao)声(sheng)治理、隔(ge)声(sheng)防振工(gong)(gong)程(cheng)。录音(yin)(yin)(yin)(yin)室(shi)(shi)(shi)(shi)、摄影(ying)棚、演艺(yi)厅(ting)、音(yin)(yin)(yin)(yin)乐(le)厅(ting)、剧院、电(dian)影(ying)院、琴(qin)房、教(jiao)研(yan)(yan)室(shi)(shi)(shi)(shi)、多功能(neng)厅(ting)、体育馆(guan)、会议室(shi)(shi)(shi)(shi)等(deng)建筑的音(yin)(yin)(yin)(yin)效设计、施工(gong)(gong)及(ji)安装(zhuang)工(gong)(gong)程(cheng)。各式隔(ge)声(sheng)门、隔(ge)声(sheng)窗、隔(ge)声(sheng)室(shi)(shi)(shi)(shi)、隔(ge)声(sheng)罩(zhao)、隔(ge)声(sheng)屏(ping)等(deng)隔(ge)声(sheng)工(gong)(gong)程(cheng)。实(shi)验(yan)室(shi)(shi)(shi)(shi)、消(xiao)音(yin)(yin)(yin)(yin)室(shi)(shi)(shi)(shi)、消(xiao)音(yin)(yin)(yin)(yin)箱、同(tong)声(sheng)传译室(shi)(shi)(shi)(shi)、听力(li)检测(ce)(ce)室(shi)(shi)(shi)(shi)及(ji)各类电(dian)子、电(dian)器(qi)、医疗、机械设备、动力(li)发动机、飞机引擎等(deng)检测(ce)(ce)等(deng)超静音(yin)(yin)(yin)(yin)无响(xiang)实(shi)验(yan)室(shi)(shi)(shi)(shi)工(gong)(gong)程(cheng)。绍兴检测(ce)(ce)全消(xiao)音(yin)(yin)(yin)(yin)室(shi)(shi)(shi)(shi)消(xiao)音(yin)(yin)(yin)(yin)室(shi)(shi)(shi)(shi)是对声(sheng)学(xue)研(yan)(yan)究的一个(ge)重要工(gong)(gong)具，消(xiao)音(yin)(yin)(yin)(yin)室(shi)(shi)(shi)(shi)的声(sheng)学(xue)性(xing)能(neng)指标，可以直接影(ying)响(xiang)到测(ce)(ce)试的精度。

消声(sheng)(sheng)室设(she)计(ji)：（一(yi)）隔声(sheng)(sheng)和(he)(he)隔振，通(tong)过现场数据(ju)采集和(he)(he)实(shi)(shi)地(di)(di)考察，确(que)定(ding)待建消声(sheng)(sheng)室位置附近的(de)低(di)频噪(zao)声(sheng)(sheng)源和(he)(he)环境噪(zao)声(sheng)(sheng)，根据(ju)采集结果分(fen)析确(que)定(ding)设(she)计(ji)方案，为了(le)提(ti)高隔声(sheng)(sheng)和(he)(he)隔振效果，一(yi)般采取与(yu)原有(you)建筑(zhu)完(wan)全分(fen)离的(de)“房(fang)中(zhong)房(fang)”式隔声(sheng)(sheng)结构。（二）浮(fu)筑(zhu)地(di)(di)面(mian)，为了(le)隔绝因(yin)撞击引起的(de)固体(ti)声(sheng)(sheng)，采用弹(dan)性垫(dian)层的(de)浮(fu)筑(zhu)地(di)(di)面(mian)进行(xing)隔振。其(qi)做法(fa)是在(zai)原地(di)(di)面(mian)上铺上一(yi)层15cm厚(经(jing)压实(shi)(shi)后为10cm)的(de)玻璃(li)棉保温板作为隔振弹(dan)性垫(dian)层，在(zai)它的(de)上面(mian)再做一(yi)层厚20cm的(de)钢筋(jin)混凝土地(di)(di)板，与(yu)外(wai)墙(qiang)留有(you)5cm的(de)问隙，以防止(zhi)与(yu)外(wai)墙(qiang)的(de)刚性连接，隔绝大楼内和(he)(he)户外(wai)固体(ti)声(sheng)(sheng)的(de)传入。

吸(xi)声(sheng)(sheng)(sheng)(sheng)尖(jian)劈(pi)的(de)(de)(de)(de)(de)吸(xi)声(sheng)(sheng)(sheng)(sheng)特(te)(te)性(xing)与尖(jian)劈(pi)长度、填充材料、空腔(qiang)深度有(you)关。同(tong)种材料下尖(jian)劈(pi)长度愈长，尖(jian)劈(pi)的(de)(de)(de)(de)(de)低(di)频吸(xi)声(sheng)(sheng)(sheng)(sheng)性(xing)能愈好。调节空腔(qiang)深度，也可有(you)效地提高尖(jian)劈(pi)结构的(de)(de)(de)(de)(de)低(di)频吸(xi)声(sheng)(sheng)(sheng)(sheng)特(te)(te)性(xing)。消声(sheng)(sheng)(sheng)(sheng)室(shi)的(de)(de)(de)(de)(de)性(xing)能是否符合使用(yong)(yong)要(yao)求，一般用(yong)(yong)检定(ding)自由(you)(you)场(chang)的(de)(de)(de)(de)(de)方法来检验，即点(dian)声(sheng)(sheng)(sheng)(sheng)源在(zai)其中(zhong)产生的(de)(de)(de)(de)(de)声(sheng)(sheng)(sheng)(sheng)压应与到声(sheng)(sheng)(sheng)(sheng)源的(de)(de)(de)(de)(de)距离成反(fan)比，实(shi)测(ce)声(sheng)(sheng)(sheng)(sheng)场(chang)与理想自由(you)(you)场(chang)的(de)(de)(de)(de)(de)偏(pian)差(cha)，是用(yong)(yong)以衡量(liang)消声(sheng)(sheng)(sheng)(sheng)室(shi)性(xing)能优(you)劣的(de)(de)(de)(de)(de)主(zhu)要(yao)指标。在(zai)一般的(de)(de)(de)(de)(de)声(sheng)(sheng)(sheng)(sheng)学测(ce)试中(zhong)，要(yao)求此(ci)偏(pian)差(cha)不大(da)于(yu)±1dB；对于(yu)传声(sheng)(sheng)(sheng)(sheng)器校准,则要(yao)求在(zai)校准距离附近此(ci)偏(pian)差(cha)不大(da)于(yu)±0.1dB。消声(sheng)(sheng)(sheng)(sheng)室(shi)是专(zhuan)门用(yong)(yong)来测(ce)试音箱(xiang)、喇叭(ba)单元等。

消(xiao)(xiao)声(sheng)(sheng)室(shi)(shi)是(shi)(shi)(shi)高精度级别的(de)(de)(de)(de)(de)声(sheng)(sheng)性(xing)能参数测试所(suo)需的(de)(de)(de)(de)(de)，例如(ru)按照行业(ye)标准ANSI S12.35和ISO 3745。消(xiao)(xiao)声(sheng)(sheng)室(shi)(shi)的(de)(de)(de)(de)(de)设计不(bu)但要(yao)求室(shi)(shi)内(nei)没有反射声(sheng)(sheng)，还(hai)要(yao)求外(wai)界(jie)的(de)(de)(de)(de)(de)噪声(sheng)(sheng)和振(zhen)(zhen)动不(bu)传到(dao)室(shi)(shi)内(nei)。隔声(sheng)(sheng)性(xing)能与外(wai)墙的(de)(de)(de)(de)(de)厚度和质(zhi)量成正比(bi)。更低的(de)(de)(de)(de)(de)振(zhen)(zhen)动从地(di)面传来，为此消(xiao)(xiao)声(sheng)(sheng)室(shi)(shi)整(zheng)体必(bi)须采(cai)用(yong)悬浮的(de)(de)(de)(de)(de)防振(zhen)(zhen)结(jie)构，即所(suo)谓室(shi)(shi)中室(shi)(shi)结(jie)构。吸(xi)声(sheng)(sheng)结(jie)构的(de)(de)(de)(de)(de)较好方式(shi)是(shi)(shi)(shi)吸(xi)声(sheng)(sheng)尖(jian)(jian)(jian)劈(pi)，下(xia)图为吸(xi)声(sheng)(sheng)尖(jian)(jian)(jian)劈(pi)示(shi)意(yi)图。尖(jian)(jian)(jian)劈(pi)内(nei)充(chong)填(tian)多孔吸(xi)声(sheng)(sheng)材(cai)料。采(cai)用(yong)尖(jian)(jian)(jian)劈(pi)吸(xi)声(sheng)(sheng)体是(shi)(shi)(shi)为了扩大表面积以提高吸(xi)声(sheng)(sheng)能力(li)，空气层(ceng)是(shi)(shi)(shi)为了吸(xi)收低频。尖(jian)(jian)(jian)劈(pi)愈(yu)长(zhang)，吸(xi)收的(de)(de)(de)(de)(de)频率愈(yu)低，长(zhang)尖(jian)(jian)(jian)劈(pi)可达2.1m。同时(shi)长(zhang)尖(jian)(jian)(jian)劈(pi)，会使消(xiao)(xiao)声(sheng)(sheng)室(shi)(shi)容积减小。在消(xiao)(xiao)声(sheng)(sheng)室(shi)(shi)与基(ji)础之间，还(hai)需采(cai)取一定的(de)(de)(de)(de)(de)隔振(zhen)(zhen)措施。江(jiang)苏半消(xiao)(xiao)音室(shi)(shi)厂(chang)家供应

一般(ban)消(xiao)声室(shi)的(de)建(jian)筑(zhu)造型(xing)几乎不用球状、柱状或(huo)圆弧面的(de)形(xing)状。江苏半消(xiao)音室(shi)厂家供应(ying)

消(xiao)(xiao)音(yin)(yin)室都有(you)哪些(xie)具(ju)体的(de)(de)应用(yong)呢？声(sheng)(sheng)就(jiu)是(shi)要在一(yi)定的(de)(de)空间内将所有(you)的(de)(de)声(sheng)(sheng)音(yin)(yin)要素全(quan)部(bu)消(xiao)(xiao)除掉，一(yi)点(dian)声(sheng)(sheng)音(yin)(yin)都没(mei)有(you)，也(ye)(ye)就(jiu)不(bu)会有(you)声(sheng)(sheng)音(yin)(yin)引(yin)起的(de)(de)一(yi)些(xie)震(zhen)动了(le)，能(neng)够(gou)让生(sheng)产更加的(de)(de)品(pin)顺，不(bu)会受到(dao)声(sheng)(sheng)音(yin)(yin)的(de)(de)影响(xiang)。而全(quan)消(xiao)(xiao)音(yin)(yin)室就(jiu)是(shi)能(neng)够(gou)达(da)到(dao)这(zhei)(zhei)种(zhong)让声(sheng)(sheng)音(yin)(yin)消(xiao)(xiao)失的(de)(de)效果(guo)(guo)的(de)(de)。这(zhei)(zhei)种(zhong)设备的(de)(de)应用(yong)，可以在生(sheng)产精密仪器和(he)部(bu)件的(de)(de)时候使(shi)用(yong)。普(pu)通的(de)(de)生(sheng)产过(guo)(guo)程中的(de)(de)一(yi)些(xie)部(bu)件其实看起来光(guang)滑，但是(shi)通过(guo)(guo)数倍的(de)(de)放大镜观看就(jiu)会发现是(shi)参差不(bu)齐(qi)的(de)(de)，这(zhei)(zhei)是(shi)必然的(de)(de)，因(yin)为声(sheng)(sheng)音(yin)(yin)会影响(xiang)很大。另外，对(dui)于一(yi)些(xie)需(xu)要安(an)静环(huan)境(jing)的(de)(de)工作(zuo)，也(ye)(ye)是(shi)需(xu)要使(shi)用(yong)全(quan)消(xiao)(xiao)音(yin)(yin)室来达(da)到(dao)这(zhei)(zhei)样的(de)(de)效果(guo)(guo)的(de)(de)，能(neng)够(gou)让生(sheng)产和(he)工作(zuo)更加的(de)(de)专注(zhu)，可以达(da)到(dao)很好的(de)(de)效果(guo)(guo)。江苏半消(xiao)(xiao)音(yin)(yin)室厂(chang)家供应

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