a-weighted sound level中文什么意思

a加权声级,a计权声级

声级

• weight:    n. 1.重量；体重；求心力，重力， ...
• sound:     sound4 n. 1. ...
• level:    n. 1.水平仪，水准仪；水准测量。 ...

例句与用法

1. Standard guide for measurement of outdoor a - weighted sound levels
   室外a加权声级测量
2. All kinds of methods measuring noise have been produced and a - weighting sound level is extensively used as a kind of fundamental measure in all of the world
   针对不同环境下的噪声国际上提出了很多评价方法，目前为世界上广泛应用的是以a声级作为基本评价量的评价方法。
3. An under estimation of the hearing effects by the low frequency noise could be happened . that is to say , even if the a - weight sound level is small , the low frequency noise may annoy to listener by the different ways from the high frequency noise . so it is necessary to understand psychoacoustics in order to make noise quality evaluations that match the subjective experience of the purchaser
   同时应用主观评价方法?成对比较法( paircomparisonstatisticalevaluationmethods )对不同家用空调器噪声进行主观评价试验，并与客观评价结果进行了对比，结果表明：人主观响应(烦躁程度)与各心理声学评价指标之间均具有很高的相关性，相关系数一般均大于0 . 9 ，而与a计权声压级之间的相关系数只有0 . 78 。