Question at position 10 The unit of measure for the intensity of sound ispitchloudnesshuedecibelsaturation单项选择题

A

pitch

B

loudness

C

hue

D

decibel

E

saturation

登录即可查看完整答案

我们收录了全球超50000道真实原题与详细解析,现在登录,立即获得答案。

类似问题

A sound source emits a sound wave with a power of 370.7 watts. Calculate the sound intensity at a distance of 8 meters from the source.Give your answer in Wm−2 using standard form to 2 decimal places in the following format without units:[math: 1.22×10−4] should be written as [ 1.22e-4 ]

If a particular sound S1 is 5 times more intense than another sound S2, then what is the difference in sound intensity levels in dB for these two sounds?  

Question at position 33 Which of the following statements correctly differentiates between loud and soft sounds?Loud sounds cause the surrounding air to press more forcibly against the ears than do soft sounds.Loud sounds have lower amplitudes than soft sounds.Loud sounds have a higher timbre than soft sounds.Loud sounds cause the air around the ears to rise in temperature more rapidly than do soft sounds.

In a demonstration of the perception of loudness, a teacher sets up a loudspeaker (P) on a stand at the centre of the school oval.The loudspeaker emits sound equally in all directions.At the point X, 10 m from the loudspeaker, a student, measures the sound intensity level to be [math: Lo dB] L_o \ dB The student now moves to point Y, 30 m away from the loudspeaker.Which of the sound intensity levels listed below (A - D) is the sound intensity level at point Y?

更多留学生实用工具

加入我们，立即解锁 海量真题 与 独家解析，让复习快人一步！