Electroacoustic violin may produce noise after long-term use, which indicates the aging of the violin. Does it need to be replaced? In fact, no. The occurrence of noise in violins is a very common phenomenon, and it is not difficult to deal with. With these skills, you can solve it on your own.
Place the head of violin musical instruments against the wall padded with a towel. At the same time, use the bow to press and play while using your left hand to press down the two feet of the fret code along the edge. Observe whether the noise disappears slightly while the volume decreases.
Then try tilting the fret code forward and backward, and moving it left and right to see if the noise disappears significantly.
The arc radius of the fret code feet and the butterfly piece on the panel do not match, resulting in a loose contact between the fret code feet and the panel, and there are gaps in various situations, such as the feet of the fret code only contacting the inner or outer side of the panel or the middle contact while the two sides arch up, which will produce noise.
The fret code tilts forward or backward, resulting in a gap between the foot of the fret code on the side of the fingerboard or the side of the string plate, producing noise.
The fret code is displaced left and right on the butterfly piece, resulting in insufficient contact with it. When the offset is severe, the force will be biased to one side of the foot of the fret code, causing the other side to be less stressed and produce a gap, resulting in a creaking noise.
The fret code is twisted for a long time during use, causing the hollow seam of the fret code to collide and produce noise.
The fret code itself is soft or the upper edge of the fret code is ground too thin, causing the violin string to be embedded too deeply and producing noise, especially for the thinnest string.
The upper edge of the fret code is ground too low, causing the height of the violin string from the fingerboard to be insufficient, resulting in a noise when playing with heavy pressure.
If it is the first case, just re-grind the fret code carefully.
If it is the second or third case, it should be adjusted.
If it is the fourth, fifth, or sixth case, then a new fret code should be replaced.
If the noise cannot be eliminated yet, seek help from electric violin manufacturers.
Looking at the cross-section of the chin rest, it is a 90-degree fan surface. The beginning cutting point of the violin string with the chin rest, that is, the turning point of the violin string, should be close to the edge on the side of the fingerboard, and it must be the highest point away from the fingerboard. The height is determined by the feel when playing. Generally, it is the height of a bank card.
How to judge? There is a slight squeak when playing an open string or all open strings. The noise disappears when playing a certain string or all strings pressed down.
The chin rest is too thin, the edge is not high enough, and the gap between the violin string and the fingerboard is not enough, so a noise occurs when the violin string touches the fingerboard when playing an open string.
The arc of the chin rest is incorrect, the edge is too low, and the beginning point of the violin string is backward, resulting in a gap between the violin string and the edge, causing noise.
Due to improper production or long-term tuning, the groove of the chin rest is too deep, causing the gap between the violin string and the fingerboard to be insufficient, resulting in a noise when playing an open string.
Due to improper production or long-term tuning, the groove of the chin rest is too wide, causing the violin string to vibrate between the two side walls, producing noise.
Use a blade (craft knife or old-fashioned razor blade) to cut it from the gap between the chin rest and the fingerboard, and then slowly cut into the chin rest from the top with a craft knife or carving knife to remove the chin rest.
If it is the first of the above situations, a wooden piece of appropriate thickness can be inserted under the chin rest to slightly raise it;
If it is the second, third, or fourth situation, polish the arc of the chin rest correctly, and then insert a wooden piece of appropriate thickness under the chin rest to slightly raise it.
If you are afraid of damaging the violin, you can pad a hard leather strip on the edge, which can also alleviate the situation, but it is only a temporary solution.