Self-driven noise-free recording keyboard instrument

Abstract

A self-driven noise-free recording keyboard instrument comprises a keyboard, a liquid crystal display screen, r-type combined type generators, rectifier bridges, measurement equipment and computer software. The lower portions of white keys of instrument keys correspond to the r-type combined type generators respectively, piezoelectric modules of the generators are in output connection with the rectifier bridges, and the rectifier bridges are in output connection with the liquid crystal display screen. Friction modules of the generators are in output connection with the measurement equipment. Electric signals recorded by the measurement equipment are output to the computer software. When the instrument keys are pressed down, the piezoelectric modules are deformed, electric energy is generated to drive the corresponding liquid crystal display screen, and the key tone indicating function is achieved. When music is played, the friction modules are deformed, the measurement equipment can record electric signals generated by the friction modules, the computer software converts the electric signals into digital sounds, the played music is converted into digital music information, and the recording effect is achieved. When the keyboard instrument is applied to recording, only the sounds generated when the instrument keys are pressed down are recorded, other sounds cannot be recorded, and therefore noise-free recording is achieved.

Description

technical field [0001] The invention relates to the field of musical instruments, in particular to a self-driven noiseless recording keyboard musical instrument. Background technique [0002] Nanogenerators can convert mechanical energy in the external environment into electrical energy and make use of them, and have been widely used in self-driven pressure sensors, chemical sensors, biological probes and other fields. By combining a triboelectric generator with a piezoelectric generator, a composite generator with an r-type structure can be prepared (M. Han, et al., ACS Nano, 7, 8554-8560). Benefiting from its structural advantages, the R-type composite generator can be integrated into a computer keyboard to convert the mechanical energy generated by tapping the keyboard in daily work into electrical energy. [0003] Compared with computer keyboards, keyboard instruments such as piano can produce beautiful and beautiful music. However, for beginners, it is difficult to id...

AI Technical Summary

Problems solved by technology

However, for beginners, it is difficult to identify the notes corresponding to the pressed keys, which brings inconvenience to learning; for composers, after improvising a piece of music, it is difficult to recall the previous accurate notes Notes and rhythm; for listeners, it is also a great pity that they cannot turn the beautiful melody played by the keyboard master into digital music and take it home

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