是的,3dB=X2 回複:聽說dB多了3個,相當於噪音加倍了
所有跟帖:
• 補充下:A(dB)=10*log(B). 10*log(2*B)=10*log(2)+10*log(B)=3.01+log(B) -隨風而來- ♂ (59 bytes) () 04/27/2014 postreply 03:26:32
• 補充下:A(dB)=10*log(B). 10*log(2*B)=10*log(2)+10*log(B)=3.01+log(B) -隨風而來- ♂ (59 bytes) () 04/27/2014 postreply 03:26:32
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