The ___ of sound can be measured in decibels. A. intensity B. volume C. pitch D. tone 相关知识点: 试题来源: 解析 A。“intensity”强度,声音的强度可以用分贝测量;“volume”音量;“pitch”音高;“tone”语气,这里指声音强度,所以选 A。反馈 ...
is greater than that of programs C. varies over a large range than that of programs D. is less than that of programs 相关知识点: 试题来源: 解析 A 正确答案:A 解析:本题问按照文章内容,来自电视广告中的最大音量怎样。利用查阅式阅读法,我们可以在文章第一段第四句和第二段最后一句中找到相关...
The loudness, or intensity, of sound is measured in decibels. For each increase of 10 decibels, the sound wave has 10 times as much energy. For example, a sound of 20 decibels is twice as loud as one of 10 decibels, but has 10 times the energy. The softest sound humans can hear, ...
N. Tandon.The Effect of Sound Intensity Measurement Parameters on Sound Power Determination. Journal of Sound and Vibration . 1989N. Tandon.The Effect of Sound Intensity Measurement Parameters on Sound Power Determination. Journal of Sound and Vibration . 1989...
Figure 1: Sound pressure, sound power and sound intensity can all be expressed in decibels (dB) even though they represent different measured quantities. The measurement units used in sound pressure, sound power, and sound intensity are different. Often the measurement unit is omitted ...
2According to the passage, the maximum intensity of sound coming from commercials ___. A.does not exceed that of programsB.is greater than that of programsC.varies over a large range than that of programsD.is less than that of programs 3According to the passage, the maximum intensity ...
Measured in decibels, noise intensity can range from zero, the quietest sound the human ear can detect, to over 160 decibels. Conversation takes place at around 40 decibels, a subway train is about 80 decibels, and a rock concert is from 80 to 100 decibels. The intensity of a nearby ...
Answer to: The loudness of a sound is determined by the \rule{1in}{.2mm} of sound waves. A. frequency B. amplitude C. consonance D. dissonance...
By what factor does the sound intensity increase?Sound Intensity Level:The increase in intensity of sound causes increase in sound level, which is measured in decibels. The decibel scale is used for comparison of intensities of sound, which...
引起听觉的声音,不仅在频率上有一定范围,而且在声强上也有一定范围。对于任意在人耳听觉范围内的频率( 20Hz— 2000Hz)来说,声强还必须达到某一数值才能引起人耳听觉。 The sound which can be perceived by human hearing has a certain range not only in frequency but also in sound intensity. In the range...