Infrasound - Wikipedia
Infrasound, sometimes referred to as low frequency sound or subsonic, describes sound waves with a frequency below the lower limit of human audibility (generally 20 Hz, as defined by the ANSI/ASA S1.1-2013 standard). [1] .
次声波 - 维基百科，自由的百科全书
次声波 （英文：Infrasound）是指 频率 小于20Hz（赫兹），但是高于 气候 造成的 气压 变动的 声波。 人 耳 对次声波基本上没有感受，但是某些动物如 象 、 长颈鹿 和 蓝鲸 可以感受及使用次聲波作為通讯。 尤其频率极低的次声波可以传播到非常远。 在水下次声波的传播距离也非常远。 次声波不容易衰减，不易被 水 和 空气 吸收。 次声波的 波长 往往很长，因此能绕开某些大型障碍物发生 衍射。 某些次声波能绕地球2至3周。 虽然人几乎无法听到次声波，但是通过其波压人可 …
Infrasonics | Physics & Sound Wave Applications | Britannica
infrasonics, vibrational or stress waves in elastic media, having a frequency below those of sound waves that can be detected by the human ear —i.e., below 20 hertz. The range of frequencies extends down to geologic vibrations that complete one cycle in 100 seconds or longer.
次聲波 - 維基百科，自由的百科全書
次聲波 （英文：Infrasound）是指 頻率 小於20Hz（赫茲），但是高於 氣候 造成的 氣壓 變動的 聲波。 人 耳 對次聲波基本上沒有感受，但是某些動物如 象 、 長頸鹿 和 藍鯨 可以感受及使用次聲波作為通訊。 尤其頻率極低的次聲波可以傳播到非常遠。 在水下次聲波的傳播距離也非常遠。 次聲波不容易衰減，不易被 水 和 空氣 吸收。 次聲波的 波長 往往很長，因此能繞開某些大型障礙物發生 繞射。 某些次聲波能繞地球2至3周。 雖然人幾乎無法聽到次聲波，但是通過其波壓人可 …
infrasonic - 百度百科
infrasonic，英语单词，主要用作为形容词，意为 [声] 次声的；次声所产生的。 The Tunguska event included seismic waves and infrasonic disturbances that were recorded around the world. 通古斯爆炸包含了地震波和次声扰乱，被世界各地记录下来。 The equation of infrasonic wave taking into account the gravitational effect in moving media is derived, with multi-layer atmospheric model.
What is infrasound? - ScienceDirect
2007年1月1日 · Infrasound, in its popular definition as sound below a frequency of 20 Hz, is clearly audible, the hearing threshold having been measured down to 1.5 Hz. The popular concept that sound below 20 Hz is inaudible is not correct. Sources of infrasound are in the range from very low-frequency atmospheric fluctuations up into the lower audio frequencies.
Infrasonic Sound - HyperPhysics
The term "infrasonic" applied to sound refers to sound waves below the frequencies of audible sound, and nominally includes anything under 20 Hz. Sources of infrasound in nature include volcanoes, avalanches, earthquakes and meteorites.
Infrasound | Description, Example & Application - Your Physicist
2023年3月20日 · Infrasound refers to sound waves with frequencies below the human audible range of 20 Hz. These low-frequency sounds can range from 0.001 Hz to 20 Hz and travel long distances with little loss of energy. Unlike ultrasound, which is above the human hearing range, infrasound can be heard by some animals, including elephants, whales, and giraffes.
Infrasonics - Meaning, Sources, Detection, Measurement, and …
Infrasound, also known as low-frequency sound, refers to sound waves that have a frequency lower than the lower range of audibility (about 20 Hz). Because hearing becomes less sensitive as frequency decreases, the sound pressure should be reasonably large for …
Infrasound Definition, Frequency & Effects - Lesson | Study.com
2023年11月21日 · Explore the definition, frequency, and production of infrasound, understand its effects, and discover its effects on this low-frequency sound phenomenon. Updated: 11/21/2023. What is Infrasound?...