欢迎点击上面☝️蓝色链接关注
或点击下面👇名片关注
在一个专门展览脑洞大开令人抓狂的现代艺术品博物馆里，意外发现一本很有意思的书：
第一个发现：很多貌似很简单很面熟的词：
avant-garde/pitch/ contour/ timbre/ meter/ key/ cadence
第二个发现：音乐居然是医学、物理学和数学的结合体。比如：
pitch
什么是 pitch？
"Pitchis a purely psychological construct, related both to the actual frequency of a particular tone and to its relative position in the musical scale. It provides the answer to the question 'What note is that?'"。
Then where it comes from?
（物理学）
Pitch is related to the frequency or rate of vibaration of a string, column of air or other physical resource. The unit of measurement, cycles per second, is often called Hertz，abbreviated Hz。By convention, "low" pitchs are those sounds that vibrate slowly, and are closer in vibration frequency to the sound of a large dog barking。“high” pitchs are those sounds that vibrate rapidly, which are closer to what a small yip-yip dog might make。
管它高还是低，问题是人怎么能听出来呢？
（医学）
Sound waves impinge on the eardrums and pinnae, setting off a chain of mechanical and neurochemical events, the end product of which is an internal mental image that called pitch. Levintin wrote "There can be no pitch without a human or animal present. It is not pitch unless and until it is heard"
为什么有人听得出来有人听不出来？
（医学）
The ability to detect differences in pitch is based on physiology, and varies from one animal to another。How is it that we humans can tell pitches apart? The basilar membrance of the inner ear contains hair cells that are frequency selective, firing only in response to a certain band of frequencies. These are stretched out across the membrance from low frequencies to high; low-frequency sounds excite hair cells on one end of the basilar membrance, medium frequency sounds excite the hair cells in the middle, and high-frequency sounds excite at the other end.
After sounds enter the ear, they pass by the basilar membrance, where certain hair cells fire, depending on the frequency of the frequency of the sounds, activity in a certain part of the membrance causes it to send an electrical signal on up the auditory cortex. The auditory cortex also has a tonotopic map, which sends electrical signal on up to the brain. The differenct areas of the brain respond to different pitches. Levitin said, the brain presents the pitches directly, which means a pitch goes into the ear and comes out the brain!
看来从基底膜到脑，任何环节有点差错，音就听不准了，基本上取决于生理结构。因此，听不准也是正常的。
The names of pitches are associated with particular frequency values. The current system is calledA440. The frequency of each note in the current system is approximantely 6% more than the one before it. That is, every tone is 6% higher than the previous one, and when a tone is increased each step by 6% twelve times, it will be ended up having doubled the orginal frequency, and the twelve notes in this musical system are calledthe chromatic scale （数学）.
如此博大精深的音乐，非常值得在基础教育中得到重视 👍。
----—------ End -----—----
大家好，我是潺小溪，一个喜欢安静读书的勤奋打工人。如果你喜欢我的碎碎念；或者我的分享对你有些帮助，欢迎关注点赞推荐转发和留言区沟通交流。
