1: Tone

　　 is a physical phenomenon. When an object vibrates, sound waves are generated, which are transmitted to the eardrum through the air, and are perceived as sound by the reflection of the brain. The sound that humans can hear is about 16-2000 vibrations per second, and the sounds used in music (not including sound) are generally limited to the range of 27-4100 vibrations per second. The height, strength, length, and tone of the sound depend on the vibration of the object.

　　2: Tone-color

　　 refers to the sensory characteristics of sound. The vibration of the sound body is composed of a variety of homophonic sounds, including fundamental and overtones. The timbre is determined by the number of overtones and the relative strength between overtones. People's ability to distinguish timbre is innate. The colors of music are divided into human timbre and instrumental timbre. The human voice is divided into high, medium, and bass, and is divided into male and female; instrumental timbre is mainly divided into string instruments and wind instruments, and the timbre of various percussion instruments is different.

　　 3: Resonance

　　Resonance refers to a kind of vibration. When a sounding body vibrates, it causes other objects to vibrate, and produces sound, which resonates.

　　 4: Fundamental tone (Fundamental tone)

　　 The lowest frequency sound emitted when an object vibrates is the fundamental tone, and the rest are overtones. The pitch determines the pitch.

　　5: Harmonic overtone

　　 Except that the lowest sound produced by the overall vibration of the vocal body is the fundamental sound, the fundamental sound is the standard, and the other parts such as 1/2, 1/3, and 1/4 also vibrate simultaneously, which are overtones. The combination of overtones determines the specific timbre and makes people clearly feel the loudness of the fundamental tone. All sounds in musical instruments and nature have overtones.

　　6: Pitch

The pitch of 　　 is expressed by the number of vibrations per second. The frequency is higher, the pitch is higher, and the frequency is lower, the pitch is lower. The current international standard sound "a" is a sound that vibrates 440 times per second.

　　7: Pitch name

　　The name refers to the name that represents a fixed pitch in the Western music system. These names are not unified and are different in each country. The widely used one is: C D E F G A B.

　　8: Syllable names

　　 karaoke refers to the names of the notes on the scale. Usually use 1do, 2re, 3mi, 4fa, 5sol, 6la, 7si. Use 1do for the major tonic and 6la for the minor tonic.