Piezoelectric flexible thin film electronic piano

Abstract

The invention discloses a piezoelectric flexible thin film electronic piano which comprises a power source, an electronic piano control box, a voice box, a flexible thin film substrate and key sensors. The key sensors are arranged on the flexible thin film substrate along the long side at intervals, are flexible piezoelectric pole electrets thin film sensors, can convert mechanical energy generated by key pressing and can output voltage signals different in amplitude and frequency according to speed and depth of key pressing, self driving is realized, and outputting of playing voice different in tone and volume is realized after the voltage signals are processed by the electronic piano control box. The piezoelectric flexible thin film electronic piano is integrally light and convenient to carry.

Description

technical field [0001] The invention relates to the field of musical instruments, in particular to a piezoelectric flexible film electronic organ. Background technique [0002] The electronic piano has a wide range, rich harmony, can imitate a variety of timbres, free volume adjustment, can be equipped with beat accompaniment similar to percussion sounds, and can be equipped with effects (such as reverb, echo, sustain, tremolo wheel, etc.) and modulation wheel, etc.) and many other features, it is currently widely used in modern music performance. In piano performance, key touch strength, key touch depth and key touch speed will all affect the timbre and loudness of piano pronunciation. But electronic keyboard adopts electronic keyboard more at present, and the pronunciation of electronic keyboard is relevant with key pressing, and its volume size has nothing to do with pressing force information, as the disclosed electronic keyboard of Chinese Patent Application No. 912315...

AI Technical Summary

Problems solved by technology

But electronic keyboard adopts electronic keyboard more at present, and the pronunciation of electronic keyboard is relevant with key pressing, and its volume size has nothing to do with pressing force information, as the disclosed electronic keyboard of Chinese Patent Application No. 91231558.X, although it can detect key pressing by processor In order to achieve the correlation between the volume and the key touch force, but the detection of the key depth and key speed cannot be realized, which makes the musical expression of the electronic organ insufficient.

[0003] In addition, most electronic pianos on the market currently use a bench type, which takes up a large space and is not convenient to carry.

Although Chinese patent ZL200520057579.1 discloses a portable electronic organ, its keys are thick and heavy, and the volume is still large after folding, so it cannot be portable.

At the same time, during the working period of the electronic keyboard, it is necessary to continuously scan the keys to determine whether there is a key pressed. When scanning, it is necessary to provide power for the keys, which consumes a lot of power.

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