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举一反三
【单选题】The human voice, like any sound produced by thrumming a stretched string, has a fundamental frequency. For voice, the centre of that frequency lies mostly below 300Hz depending on the speaker"s . I...
A.
reducing noise and amplifying higher-frequency
B.
cutting down noise and enhancing certain frequencies
C.
stressing higher frequencies and impairing lower ones
D.
weakening the frequency range between 300Hz and 6kHz
【单选题】The human voice, like any sound produced by thrumming a stretched string, has a fundamental frequency. For voice, the centre of that frequency lies mostly below 300Hz depending on the speaker"s . I...
A.
Telephone can transmit a wide range of frequencies.
B.
Higher frequencies are more important than lower ones.
C.
People may use many parts of the mouth to utter consonants.
D.
Cutting off higher frequencies will not influence understanding.
相关题目：
【单选题】The human voice, like any sound produced by thrumming a stretched string, has a fundamental frequency. For voice, the centre of that frequency lies mostly below 300Hz depending on the speaker"s . I...
A.
reducing noise and amplifying higher-frequency
B.
cutting down noise and enhancing certain frequencies
C.
stressing higher frequencies and impairing lower ones
D.
weakening the frequency range between 300Hz and 6kHz
【多选题】在古筝的弹奏中,基音指的是从()到()这段有效弦长整体振动产生的音。
A.
筝码
B.
前岳山
C.
后岳山
D.
左手触弦点
【单选题】The human voice, like any sound produced by thrumming a stretched string, has a fundamental frequency. For voice, the centre of that frequency lies mostly below 300Hz depending on the speaker"s . I...
A.
Telephone can transmit a wide range of frequencies.
B.
Higher frequencies are more important than lower ones.
C.
People may use many parts of the mouth to utter consonants.
D.
Cutting off higher frequencies will not influence understanding.
【判断题】一个声音的音色是由基音及其泛音的成份决定的。（）
A.
正确
B.
错误
【判断题】二胡的“泛音”分为自然泛音和人工泛音两类。
A.
正确
B.
错误
【判断题】弹奏泛音时，左手要用力压住琴弦。
A.
正确
B.
错误
【单选题】基音是指（ ）
A.
频率最高的音
B.
振幅最大的音
C.
频率最低的音
D.
振幅最小的音
【判断题】古琴三种音色之一的泛音代表的是天上的声音。（ ）
A.
正确
B.
错误
【单选题】下部共鸣腔靠下的部分起泛音共鸣的作用，影响声音的音色（ ）。
A.
正确
B.
错误
【判断题】泛音越多，人声听起来越圆润。
A.
正确
B.
错误
【判断题】练习泛音时一般食指在四徽练习。
A.
正确
B.
错误