صندوق صوتك - الآلات الموسيقية .. الآلات التي نستخدمها كل يوم وكيف تؤدي عملها

Your Voice Box - Musical Instruments .. The instruments we use every day and how they work

Your Voice Box:

Your musical instrument is located in your throat, and this instrument is the larynx or (voice box). It includes two thin, flat cords called the vocal cords. They vibrate when air blows over their ends. The way to make sound is that you expel air from your lungs through these vocal cords, so it comes out of your mouth (when you speak or sing), or out of your nose (when you hum or hum). How can you get all the different tones with these two vocal cords alone? You can't change their length or weight, so there must be another way. You can change the intensity of tension on these cords. If the body is tightly stretched, it will produce a sound with a higher pitch than the sound it produces if it is relaxed. This is why stringed instruments are tuned before playing them. The musician moves the keys to which the strings are connected. If the key is moved in a direction that tightens the string, the tone of this string becomes high, but if the string is relaxed, the tone emitted from it becomes low.

The same thing happens with the vocal cords, but they do not use such keys, but are replaced by muscles located at the ends of these cords that receive the vocal cords. These muscles cause the vocal cords to tighten and relax when signals come from the brain. At the same time, you blow air through these cords, causing them to vibrate. The loudness of the voice is renewed by the amount of air blown, while the pitch of this voice depends on the degree of tension and tension of these vocal cords.

Women's voices are usually higher than men's voices, and the reason for this is that women's vocal cords are usually shorter than men's vocal cords. You know that something short vibrates faster than something long, and thus produces a higher pitched tone. Since the long body needs more distance, the result was that the larynx of men is more prominent than the larynx of women, forming a protrusion in the front part of the neck. This protrusion is called the "Adam's apple".

Any flexible body can vibrate and produce a sound, and you have seen how sounds are produced as a result of the vibrations of strings, air columns, wooden fingers, reeds and vocal cords. There are other instruments that use vibrating bodies other than these. For example, the drum has a leather cover that is stretched and vibrates, and triangles, musical cymbals and bells are made of metal in various shapes. We are not concerned with the shape of the musical instrument or the material from which it is made, because the same principles remain correct and unchanged. These principles are:
1 - Long and heavy bodies vibrate slowly, giving sounds with deep, low-pitched layers.
2 - Small (i.e. short) and light-weight bodies vibrate quickly, giving high-pitched notes.