【題目】“中國好聲音”比賽現(xiàn)場,吉他手彈奏電吉他時不斷用手指去控制琴弦長度,這樣做的目的是為了改變聲音的______(選填“音調(diào)”、“響度”或“音色”,下同);有一種新型聲紋鎖,只要主人說出事先設(shè)定的暗語就能把鎖打開,如果換了其他人,即使說出暗語也打不開,這種聲紋鎖辨別聲音的主要依據(jù)是______;來自患者的聲音通過橡皮管傳送到醫(yī)生的耳朵,這樣可以提高聲音的______

【答案】音調(diào);音色;響度

【解析】試題分析:聲音的特性有三個:音調(diào)、響度和音色.音調(diào)是指聲音的高低,響度是指聲音的大小,音色是指聲音的感覺特性.

解:(1)彈奏吉時不斷用手指去控制琴弦長度,從而改變了琴弦振動的快慢,也就改變了聲音的音調(diào).

2)不同人發(fā)出聲音的音色不同,因此聲紋鎖主要是依據(jù)聲音的音色來辨別主人的.

3)醫(yī)生用聽診器為病人診病,來自患者的聲音通過橡皮管傳送到醫(yī)生的耳朵,這樣橡膠管減少了聲音的分散,提高了響度.

故答案為:音調(diào);音色;響度.

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