Huqin intonation training optical indicating device

Abstract

The invention provides a Huqin intonation training optical indicating device. The device comprises a shell, a mainboard, LED lamp beads, a light-passing window and a metal film sensing key, wherein the shell is bound on a rod of a Huqin through threading holes or protruding parts at the top and the bottom of the shell; the mainboard is placed in the shell, and a single-chip microcomputer chip, a USB interface and a light bar interface are arranged on the mainboard; the LED lamp beads are fixed on the lamp strip or integrated on the mainboard and are used for emitting light of various colors; the light-passing window is arranged on the shell and can enable light rays emitted by the LED lamp beads to be emitted out of the shell and form point-shaped light spots at positions, which should be pressed, on strings; and the metal film sensing key is adhered to the interior of the shell, and a key identifier or character is arranged at the position, corresponding to the metal film sensing key, of the exterior of the shell. The Huqin intonation training optical indicating device is accurate in indicating position and convenient to operate, can quickly improve the accuracy of pressing sound, greatly reduces difficulty of Huqin intonation training, and does not affect movement of the left hand and the bowing movement of the right hand.

Description

technical field [0001] The invention relates to the technical field of huqin performance, in particular to an optical indicator device for huqin intonation training. Background technique [0002] In the process of playing the huqin, since it has no fingerboard and taste, the position of the fingers of the left hand can only be judged by hearing. The player must undergo long-term and repeated training on hearing and fingers to form a good muscle memory. In order to master better intonation, it adds considerable difficulty to the learning of this type of instrument. [0003] In the prior art, there is a huqin fret finger sticker, which is to paste a piece of PVC hard paper printed with the chord position on the piano bar, on which the mark of the chord position is printed. Since the distance between the piano bar and the strings is several centimeters, and the human eye has parallax when viewing downwards, and the error of the string pressing position must be accurate to the ...

AI Technical Summary

Problems solved by technology

However, for the same reason as the previous type of finger stickers, the human eye has parallax when viewing downwards, which can only provide a reference for approximate phonemes, and the error of the string position must be accurate to the millimeter level. This type of technology is also helpful for accurate string pressing. smaller

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