What is it that makes the sound of musical instruments such as the erhu, violin, piano, etc

The bow of the erhu causes the strings to vibrate, and the strings transmit the vibrations to the skin through the saddle, so that the vibration of the skin can make sound. The speaker acts as a resonant and amplifies the sound. The violin has a similar principle, that is, pulling or plucking the strings produces sound.

The air inside the body vibrates and makes a sound, which is called resonance. Four strings run from the base of the violin, across the horse, and are held in place at the end of the fretboard. Tuning is by twisting the strings to adjust the tightness of the strings.

The pitch of the piano is determined by the thickness and tension of the strings. The shorter, thinner, and tighter the string, the higher the tone produced. The articulating body of a piano is the strings.

The piano is through the lever of the keyboard, the energy of the player's finger touch the keys is transmitted to the linkage lever, and then the linkage lever rises at the same time, and the cam under the hammer is pushed up by the push rod, and then the hammer is driven to hit the strings by the force of inertia, and the strings vibrate under the force of the hammer and pronounce. However, the volume of the sound emitted by the vibration of the string itself is very limited, and the piano designer conducts the energy of the vibration of the string to the soundboard through the string code, and resonates with the resonance of the plate to expand the volume.

The erhu and violin are both rubbed by pulling the strings on the erhu and violin with the handle, and the piano is made of percussion in the piano You just play the piano and the keys are pressed down, and the struck thing inside is lifted up, and the percussion makes a sound when it hits the top.

The piano is driven by the keys to strike the strings to make sounds.

Metal-to-metal collision vibrations.

Answer B test question analysis: Selling orange timbre refers to the quality and characteristics of the sound, which is related to the material of the sounding object, and the timbre of the sound of different objects is different When the erhu and violin make sounds, the materials of the vibrating objects are different, so the timbre of the sound is different. Therefore, the answer to the case of the Zao Group is: B

Test Points: Differences in Tone, Loudness, and Timbre.

Comments: This question mainly tests the understanding and application of timbre, which is a basic knowledge.

The erhu, violin, and piano make sound through the vibration of strings; The pitch of the long, thick string vocalization is low, and the pitch of the short, thin string vocalization is high; The pitch of the taut string vocalization is high, the pitch of the non-tight string vocalization is low, and the pitch of the short, thin string vocalization is high; The pitch of the taut string vocalization is high, and the pitch of the non-tight string vocalization is low; The greater the amplitude of the string, the louder the sound bends, and stringed instruments usually have a wooden resonance box to make the sound louder; Therefore, the answer is: the vibration of the Qin Lu string, the thickness, length, tightness, vibration frequency, and the resonance box

【Answer】B [Answer Analysis] Test Question Analysis: Timbre reflects the quality of sound, it is related to the material, structure and sound mode that compose the sound body. People can distinguish the sounds made by the erhu and the violin, mainly according to the different timbres, so the correct option for this question is b.

Test Spot: Characteristics of Sound - Timbre.

It's about to be upgraded, so make up a few words to experience the watchtower, don't blame it.

Erhu is like writing English letters, erhu is like writing Chinese calligraphy, one horizontal and one vertical seems simple.

It's too much worse, it's not a grade at all.

The size of the resonance chamber varies greatly.

The sound at the beginning of the erhu is more tactful.

The erhu is the ad string of the violin....

Generally, the songs played by the erhu are more Chinese-style.

Because there are few erhu sounds, and they take the route of bitterness and hatred.

Why is it that when I was a beginner, I was always said to play the erhu when I played the violin.

Because each instrument has a different material or structure of sound, it will produce a different timbre sound, so you can tell whether the instrument is a violin or an erhu by its timbre;

Therefore, C

a. We can distinguish the sound of violin and erhu because they produce different timbres, so this option is wrong;

b. Because the sound produced by the vibration of butterfly wings is less than 20 Hz, it is an infrasound wave, which cannot be heard by the human ear, not because the loudness of the sound it emits is too small, so this option is wrong;

c. The greater the force and the greater the amplitude when striking the gong, the louder the sound it emits, so this option is correct;

d. The singer sings high, where the "high" refers to the loudness, so this option is wrong, so choose C

The violin, erhu, and pipa are all stringed instruments, so they all rely on the vibration of the strings to produce sounds; Therefore, A and C are wrong, and B is correct;

The drum is a percussion instrument, which relies on the vibration of the drum surface to produce sound; Therefore D is wrong;

Therefore, choose B

a. When the erhu is playing, the pitch is adjusted by changing the strength of the bow hair to hook the strings, so A is wrong;

b. The loudness of the sound is related to the amplitude, the greater the strength of plucking the strings, the greater the amplitude, the greater the loudness of the sound Therefore, when the pipa is played, the loudness is adjusted by plucking the strength of the strings, so B is wrong;

c. When the guitar is played, the tone is adjusted by plucking the strings; Therefore c is correct;

d. When the length of the string is controlled with the fingers, the speed of the string vibration will be different, so change the frequency of the sound vibration, and the tone of the sound will change; Therefore D is wrong;

Therefore, C