jjg449-2001倍频程和1-3-倍频程滤波器检定规程.pdf

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1、免费标准网(www.freebz.net)中华人民共和国国家计量检定规程JJG449-2001倍频程和1/3倍频程滤波器Octave一BandandOne一Third一OctaveBandFilters2001一07一06发布2001一10一01实施国家质量监督检验检疫总局发布免费标准网(www.freebz.net)无需注册即可下载免费标准网(www.freebz.net)J.IG449-2001倍频程和1/3倍频程滤波器检定规程}JJG449-2001{代替JJG449-1986VerificationRegulationofOctave一BandandOne一Third一

2、OctaveBandFilters本规程经国家质量监督检验检疫总局于2001年07月06日批准，并自2001年10月01日起施行。归口单位:全国声学计量技术委员会主要起草单位:衡阳仪表电气设备有限公司中国计量科学研究院广州市计量测试所参加起草单位:湖北省计量测试技术研究院本规程委托全国声学计量技术委员会负责解释标准分享网www.bzfxw.com免费下载免费标准网(www.freebz.net)无需注册即可下载免费标准网(www.freebz.net)JJc449-2001本规程主要起草人:刘湘衡(衡阳仪表电气设备有限公司)陈剑林(中国计量科学研究院)张美娥(中国计量科学研究院

3、)周伦彬(广州市计量测试所)参加起草人:时根火(湖北省计量测试技术研究院)免费标准网(www.freebz.net)无需注册即可下载免费标准网(www.freebz.net)JJG449-2001目录范围·····，，···················································································⋯⋯(1)引用文献··········，···················，···············································，·⋯⋯(1)术语和计量单

4、位········································，····················，·············⋯⋯(1)1倍频程比·················································································⋯⋯(1)2带宽指示值，，··，······，，，··‘··········，，，·，·······，，-‘·········。·，，·，·······，··⋯⋯(1)3基准频率····································

5、··，··········································⋯⋯(2)4准确的(频带)中心频率·······，·······，········，···················，，·········，··⋯⋯(2)内J凡﹂5标称(频带)中心频率···················，··········································⋯⋯(2)6截止频率·················，·········，····················································

6、⋯⋯(2)7归一化频率·············································，·······························‘⋯⋯(2)八，八﹂，，八8滤波器衰减·············································································⋯⋯(2)9参考衰减·······，······，，，···············，·，········，，，·····。···········，··········，··⋯⋯(2)10相对衰减··········

7、····································································⋯⋯(2)、11滤波器的带宽···············，··，··‘·················‘·························，··⋯⋯(2)12归一化有效带宽····································，··········‘·····················⋯⋯(2)13归一化基准带宽·