What is the only obvious difference between plucking the clavichord and striking it?

There are several obvious differences:

1. The plucked string (hereinafter referred to as plucked string) can "touch away" when the key is struck, and the plucked string (hereinafter referred to as plucked string) keeps in contact with the string when the key is struck.

The principle of H is similar to that of modern piano. When the key is pressed, the lever will be moved to make the metal cone pluck the strings from bottom to top. No matter whether the keys are loosened or not, the metal cone will automatically return to its position, so it is called "touch and go". Modern pianos use mallets instead of metal cones.

The characteristic of striking is that the part that strikes the strings will not return automatically, and the keys must be loosened. At the same time, the depth of the keys can control the timbre, so that the strokes have the characteristics similar to plucked instruments, such as kneading strings. Players can achieve similar effects by vibrating the keys.

2. The principle of striking makes it possible to play different notes by striking different parts of the same string. Dialing does not have this function.

Because the speaker is small, the sound of percussion is much smaller than that of plucking. In appearance, percussion is more like an electronic piano or an electric piano, while plucking is similar to a modern piano (vertical/triangular).