Sound, music, and songs are three things that are closely related. They are the result of sequential classification from left to right.

The song must be music, and the music must be the sound. What is music, pleasant sound is that.

It's like noise, we don't think it's music. And playing the piano is actually a kind of music. In ancient times, a person who played the harp was called a musician.

In terms of tools, music can be divided into two types: human vocalizations and instrumental instrument vocalizations. And music in modern Chinese dictionaries refers more to songs than pure music.

Instrumental music is pure music, and it tests the audience's music appreciation level even more. The concerts in some special places play pure music, and the songs sung by the singers belong to body music.

Pure music is the spring and snow, while the body music is the lower riba. From the audience, the audience of pure music must be music lovers.

And half of the audience for body music is probably playing for it. Beethoven's Symphony of Destiny is pure music, and it takes a certain level of music to understand his intentions.

However, this piece of his music is passionate and moving. It's like seeing Beethoven talking about something in a tune.

Although we didn't really hear it, the music was so powerful. A lot of songs are called sounds, but they aren't physical sounds.

The sounds in the songs are more literary sounds, more abstract than physical sounds. There is a lyric in Fei Yuqing's "Voice" that the voice is legendary, and the voice here obviously does not refer to the physical sound.

Personify the voice, and the story can continue. So, what is the sound here?

The singer's thoughts, which are the representatives of the singer. In literature, authors often use objects as metaphors for themselves to achieve self-expression.

For pure music, it may be easier to enjoy it with sheet music. And I have the impression that the purity of pure music is not that the sound is not made by people, but that it is really immersed in it when you listen to it.

Although there is a certain difficulty in appreciating music, it is also a fact that only music lovers are willing to become pure music audiences.

And although I am a novice musician, I have admired it for a long time. In the near future, I will be buying some books on musicology.

After all, for me, you can't just focus on body music. Mizukawa said that it is never too late to enjoy pure music.

Okay, so let's talk about sound in acoustics! My question is can sound pass through an object?

I can hear outside sounds at home, so doesn't it mean that yin sounds can pass through objects?

The reason may be that the window is not closed, and the sound comes in through the gap in the window. However, when the windows are closed, the sound can still come in.

Previously, there was noise in the place where I lived. And I bought earbuds, but it didn't work. I plugged my ears with my fingers, and as a result, I couldn't hear the sound at all.

If sound can pass through an object, then why can't sound pass through a finger? Obviously, the fingers can't pass through the sound.

I think the possible reason is that the density of the fingers is higher. So, sound can pass through some objects.

Second, when the phonon moves forward, does it pass through or bypass the obstacle? Vibration isolation is a type of vibration in which an object vibrates at a lower frequency than free vibration.

Since the frequency of the vibrating object can be reduced by the object covering it, it is said that the negative vibration will be weakened when it encounters an obstacle.

Whereas, vibration is the cause of sound, the cause of the appearance of phonons. Therefore, the phonons will bypass the object when they are in motion.

However, not a complete bypass. The six sons of the wind came to say so. My question is where do the phonons come from?

We know that sound is made up of phonons. Vibrations can make sounds, so where do the sound particles come from?

I've read Fundamentals of Acoustics, but I haven't found the answer. Photons are electron transitions outside the nucleus, but what about phonons?

Perhaps phonons are also produced by electrons. Since it is a jump, is it a complete jump or an incomplete jump?

If the photon is produced by a complete transition, then the phonon is produced by an incomplete transition. That's probably it!

Is the second phonon an elementary particle? In my memory, it wasn't. So, what does it consist of?

The smallest particle at the moment is a quark, so it should contain quarks. Of course, neutrinos are also elementary particles.

Since phonons cannot pass through fingers, neutrinos are absent. There is no experimental evidence, and I dare not speculate.

I guess it should have quarks! Dueñas said in a rambling voice, and the time was stretched out a lot.

How can there be no sound without animals? We can make a lot of sounds, but can animals? Parroting is a parrot that imitates human speech.

Note that parrots are consciously imitating. Other animals may not want to imitate human pronunciation, but they can actually make a lot of sounds.

The second is that if a creature that is not afraid of fire runs into the fire, can it hear the sound outside the fire?

I don't think so. Because fire is plasma, and phonons enter the fire and become plasma.

And that's all I want to say. Margarita was probably a little tired, so she didn't say much.