Physical principles of guitar sound.

After plucking the strings, the vibration is transmitted to the piano body, and the sound is made by the * * * sound box. Sound is directly related to the volume, timbre, the material of the piano body, the shape and size of the box. Guitar is a plucked instrument with simple strings, which makes sound through the strings.

Guitar is also translated into guitar or lyre. It is a plucked instrument, usually with six strings, which is similar in shape to a violin. Guitar is usually considered as the main instrument in pop music, rock music, blues and folk songs.

Guitar has 6 strings, the thickest one is called 6 strings, followed by 5, 4, 3, 2, 1 strings, and the sound is also from coarse to fine. Pitches from coarse to fine are: 6 strings (e), 5 strings (a), 4 strings (d), 3 strings (g), 2 strings (b), 1 string (e).

The basic fingering of the guitar is 12345. The fingers of the left hand are the index finger, middle finger, ring finger, little finger and thumb corresponding to the left hand. The index finger pair should be based on two strings and one fret, the middle finger on four strings and two frets, and the ring finger on five strings and three frets. The right hand mainly sweeps the strings and is also responsible for plucking, striking and syncopating.

The common chords of guitar are G chord, D chord, F chord, Dm chord, Dm7 chord, G7 chord, C chord, Am chord, Em chord, Bm chord and Bm7 chord.

Guitar string is an important part of guitar, and a good guitar string has a great influence on the timbre of guitar. The thickness of the strings will also affect the feel and timbre. Thin strings are easier to press, but the timbre is weaker. Thick strings are harder to press, but the timbre is better.