Why does the recorder sometimes blow two notes at the same time?

Hello! It is quite normal for an instrument such as a recorder to blow two notes at the same time.

Generally we have the notion that the longer the recorder, the lower the pitch it will make; The shorter the recorder, the higher the pitch it blows. When playing the recorder, holding down or letting go of some side holes with your hand is to change the length of the pipe, that is, to change the tone, so as to blow a different tone.

Taking "1" as an example, when we hold down all the holes, it is generally defaulted to a "1" with only high, mid and low tones, which is actually still a certain deviation. Take a look at the explanation below:

The recorder is made using the principle of air vibration and resonance of air columns. The pressure of the flowing gas decreases, and the faster the flow rate, the lower the pressure. Example:

When the aircraft advances on the runway, due to the special design of the upper and lower surfaces of the wing, the gas flow velocity through the upper surface is greater than the gas flow rate on the lower surface, so the pressure of the lower surface gas on the wing is greater than the pressure of the upper surface gas on the wing, and when this difference is greater than the weight of the aircraft, the aircraft is lifted into the air. The principle of sound of the recorder is the same as this. When we blow the recorder, the gas enters the cavity of the recorder from the blowing hole, and the vortex movement is done at the blowing hole, so that the gas pressure inside the blowing hole decreases, so the gas at the end of the flute moves to the blowing hole (this speed is very fast, to imagine the air as a very elastic thing, in fact, it is also like this), and the sound backlog is generated at the blowing hole, and this movement causes the pressure at the blowing hole to increase, but the mouth wind continues to blow the blowing air (physically called excitation), and pushes the gas to the tail of the flute, and then the pressure at the blowing hole decreases. The gas moves towards the blowing hole, and so on, vibrating and making a sound.

However, there are other problems with the vibration of the recorder. Because there is resistance to the movement of the air inside the recorder, the gas close to the inner wall of the recorder vibrates slowly because it is resisted by the inner wall of the recorder. Just like a river, the closer you get to the shore, the slower the current.

The gas in the middle of the flute has no resistance, and it vibrates quickly, which is one of the reasons why the inner wall of the recorder is made very smooth. When the inner wall of the recorder resists too much air, it will affect the sensitivity of the pronunciation. Strictly speaking, there is not only one standing wave inside the recorder, but many standing waves, so the sound played by the recorder is not a simple frequency, and the standing wave in the middle part of the recorder plays a decisive role, but this is not the main reason for "blowing two notes at the same time", the main reason is the human mouth.

The wind speed at different positions in the human mouth is different, which causes many standing waves to vibrate inside the recorder. Theoretically, how many speeds there are in your mouth, how many standing waves there are inside the recorder, so how many frequencies are there in the sound produced at this time. How do you get the overtones?

The overtone is a relatively pure tone, and there are very few other frequency components in the overtone, the reason is that the mouth wind is very thin when blowing the overtone, and the airflow velocity of each part of the mouth is very similar, so the frequency of the blowing sound is relatively single, which is the overtone. The speed of the mouth determines the main frequency, which in turn causes you to blow two notes at the same time. (To grasp the accuracy of the flute, you also need a long-term contact, I wish you success!) ）

It means that your fingers are not fully pressed against the flute hole for this to happen.

Ahh......hThat's an interesting question.

Can you give me an example? ......

In general, flutes.

The number of notes you can play depends on the quality of the flute and the control of your own breath. If you're a beginner, you should be able to blow out the area from tube note 5 to treble note 3, which is 13 notes; If the breath is used well and there is a certain foundation, you can blow out the tone from 5 to 6 notes, that is, 16 notes, which is the range of a normal flute.

The flute belongs to the woodwind instruments.

The family of blowing membrane instruments, the flute is very expressive, it can not only play long, high-pitched melodies, but also express the vast, broad mood, and at the same time can also play cheerful and gorgeous dance music and graceful and beautiful tunes. It can play legato staccato and vibrato.

and color-related notes such as portamento; Different emotions can also be expressed.

When blowing, the lips should be naturally closed, hold the two ends of the flute with both hands, hold the mouthpiece in the left hand, hold the tail of the flute in the right hand, place the blowing hole on the lower edge of the lower lip, and aim at the blowing hole to blow the air.

When the breath rushes out, only a small gap is allowed for the breath to pass through, and it becomes a column of air that blows diagonally under the blowing hole. The principle is like blowing a pen sleeve.

In order not to flush your lips apart and let the breath dissipate, the cheek muscles must be hard to keep the breath outlet small.

Generally, there are several more commonly used methods according to different genres.

1. Use a sound. It's a rhythm on the next hole of the note, and hit it briskly. This feeling is a little stronger.

2. Tuyin. It is divided into single spit, double spit, triple spit, etc. It's also very complicated to say why the tongue is spitting, the breath is spitting, and so on.

In general, you can use the ordinary pronunciation of the song, which is to use the tongue to block the teeth first, and when there are continuous notes, the tongue is elastically retracted according to the rhythm, which is a bit like the mouth shape that pronounces the word "soil".

If it's three consecutive 16th notes, it's usually played with three notes, and if it's a continuous 4th note, you can play it with a single note and one note at a time.

Practice with the mouth shape of "spit, spit, spit" when speaking, and the tongue position.

It's OK to blow it out more than once.

When the recorder is played, the air column in the recorder will vibrate under the action of force, making a sound, and the length of the air column flowing out of different flute holes is different, the vibration frequency is different, and the pitch is also different.

The recorder is also a 12-temperament instrument, which can be transposed arbitrarily, with a range of more than two octaves, and is extremely expressive. Therefore, learning the recorder, like learning any Western musical instrument, can effectively cultivate people's fixed pitch concept and effectively improve people's professional quality. In many countries, the recorder has become a popular instrument with the largest group of learners, and in China as well.

Because the recorder has a natural frequency of vibration, this frequency changes when you hold down some holes.

So there will be a different sound, because the recorder has a natural frequency of vibration, and when you hold down some holes, this frequency changes.

So there will be different sounds.

There is a whistle in front of the recorder, and the air flows and squeezes through the whirlpool inside the whistle to produce a sound.

Summary. How do you play several identical notes in a row when playing a flute?

Hello <>

1.With a beating. It's a rhythm on the next hole of the note, and hit it briskly. This feeling is a little stronger.

2. Tuyin. It is divided into single spit, double spit, triple spit, etc. It's also very complicated to say why the tongue is spitting, the breath is spitting, and so on.

In general, you can use the ordinary pronunciation of the song, which is to use the tongue to block the teeth first, and when there are continuous notes, the tongue is elastically retracted according to the rhythm, which is a bit like the mouth shape that pronounces the word "soil".

Hello! Generally, according to different genres, there can be several more commonly used methods: 1With a beating.

It's a rhythm on the next hole of the note, and hit it briskly. This feeling is a little stronger. 2.

Phonics. It is divided into single spit, double spit, triple spit, etc. It's also very complicated to say why the tongue is spitting, the breath is spitting, and so on.

In general, you can use the ordinary pronunciation of the song, which is to use the tongue to block the teeth first, and when there are continuous notes, the tongue is elastically retracted according to the rhythm, which is a bit like the mouth shape that pronounces the word "soil".