【題目】“中國(guó)好聲音”比賽現(xiàn)場(chǎng),吉他手彈奏電吉他時(shí)不斷用手指去控制琴弦長(zhǎng)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(shuō)出事先設(shè)定的暗語(yǔ)就能把鎖打開(kāi),如果換了其他人,即使說(shuō)出暗語(yǔ)也打不開(kāi),這種聲紋鎖辨別聲音的主要依據(jù)是______;來(lái)自患者的聲音通過(guò)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(gè):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(jué)特性.
解:(1)彈奏吉時(shí)不斷用手指去控制琴弦長(zhǎng)度,從而改變了琴弦振動(dòng)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(lái)辨別主人的.
(3)醫(yī)生用聽(tīng)診器為病人診病,來(lái)自患者的聲音通過(guò)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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