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Author:
Journal / Book Title:
Year:
Volume:
Issue:
zao sheng mian mian guan
Author(s):
JIN Zhonghui
Pages:
121
-
122
Year:
2006
Issue:
Z2
Journal:
School Journal of Mathematics
Keyword:
噪声
;
三个要素
;
振动波形
;
物理性质
;
声音
;
机械振动
;
音色
;
响度
;
高强度
;
农作物
;
Abstract:
<正>江西省永新县芦溪中学的刘小强同学问:“噪声有三个要素吗?”这就是问能否用音调、响度和音色这订购个要素来描述噪声.我们知道,通常人耳对频率处在20Hz至20 000 Hz的机械振动才有感觉,我们称它为声音.由于乐声和噪声同属声音,所以我们都可以用音调、响度和音色来描述它们.
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