The newly bought folk guitar, 12 is overtone than 12, and the sound is higher. How should I tune it? ?

There is also the possibility of adjustment. Please adjust it according to the actual situation of your piano. First, reduce the height of Hou Xian code, as shown in the figure below.

Generally, the pitch is slightly higher. Adjusting the height here can reduce the pressure when pressing the strings in the high-pitched area and make the tone slightly lower. However, the chord distance at pin 12 should be considered. If the strings are close to the fret, don't put them down. See the second method.

Two: Transform the Hou Xian code. Generally, the Hou Xian code of the folk piano is made into a picture that is not straight.

Find yourself a cow bone, which is the original size, but the width is slightly larger and the thickness is about 2 mm. In this way, you can make the notch in the upper part a little further back, which will reduce the sound. Then the size is wider, and the groove at the lower part will be widened appropriately. Be very careful when making these changes. If there is no room for widening the piano, don't make hard changes.

There is a third possibility, depending on the hardness of the string you use. If it is a hard string, you can consider using a softer one, which will also help.

Then, if possible, the three aspects will be done together, which will have better results.