Introduction to music theory:
Music theory is the abbreviation of music theory, including relatively simple basic theories-reading spectrum, interval, chord, rhythm, beat and so on. There are relatively advanced contents such as harmony, polyphony, form, melody and orchestration. Mastering music theory has a very positive significance for composing, arranging, conducting and playing.
Music theory usually refers to the basic part of music theory, that is, "basic music theory" There are countless works about basic music theory, among which the most popular one is Basics of Music Theory edited by Li Zhongguang of the Central Conservatory of Music.
It mainly includes sound level, sound intensity, sound length and timbre.
1, the tone has four main attributes: high and low, strong and weak, duration and timbre. These four attributes are very important in music performance, but the tonality and duration of the tone are the most important.
I don't know if you have such an experience: for a song, whether you sing with your voice or play with an instrument, the sound is small or big. No matter what pitch you use when singing or playing, the strength and timbre of the sound have changed, but the melody of this song remains the same. But if the tonality or duration of this song changes, the feeling of music will be seriously affected. It can be seen that tonality and duration are important for a melody.
2. Sound level depends on frequency and wavelength. The shorter the wavelength, the higher the sound; The longer the wavelength, the lower the sound; Like a tall man, he sings in a lower pitch than a short man. The intensity of sound depends on its amplitude.
The greater the amplitude, the stronger the sound; Conversely, the smaller the amplitude, the weaker the sound; Like a tall man, he sings louder than a short man. The duration of sound depends on the duration of sound. The timbre is determined by many factors such as the nature, shape and overtone of the pronunciation body.
3. Timbre refers to the sensory characteristics of sound, and it is an important means of expression in music that is extremely attractive and can directly touch the senses. There are pitch and overtones in music, and the number of overtones and their relative strength determine the specific timbre.
People are born with the ability to distinguish timbre, which can be divided into vocal timbre and instrumental timbre. The timbre of human voice is high, medium and low, divided into men and women; The timbre of instrumental music is mainly divided into string instruments and wind instruments, and the timbre of various percussion instruments is also different.