Piano keyboard vibration playing instrument

Abstract

The invention relates to a piano keyboard vibration playing instrument, which comprises a controller, a piano key striking device and a piano key reset sensor, wherein the piano key striking device and the piano key reset sensor are respectively connected with the controller through a first data wire and a second data wire, the piano key reset sensor detects the position of piano keys and transmits the detection signal to the controller through the second data wire, and the controller transmits a working signal for the piano key striking device to strike the piano keys through the first data wire according to the detection signal transmitted by the piano key reset sensor. The piano keyboard vibration playing instrument can simulate the force and frequency played by people. By adopting the piano keyboard vibration playing instrument to strike the piano keyboard for a given times and / or a given frequency so as to test the variation of the tone of the piano keyboard before and after the striking, so the intonation stability of the piano from a piano factory can be rapidly judged on the spot.

Description

technical field [0001] The invention relates to a detection device for the pitch stability of a piano, in particular to a piano keyboard vibration instrument capable of simulating the strength and frequency of a human playing. . Background technique [0002] As the king of musical instruments, the piano is more and more loved by people. It has been widely used at present, and its quality improvement has been paid more and more attention. In order to meet the needs of development and effectively guide production, when revising the national piano standard in 2008, The pitch stability of the piano is put forward in the standard as an important indicator requirement. The quality of piano intonation stability is affected by many factors, such as: the influence of temperature and humidity changes on the soundboard, the influence of the extension characteristics of the string wire itself on the intonation; the friction between the peg board and the peg The effect of size on pitch...

AI Technical Summary

Problems solved by technology

On the one hand, this method takes a long time to judge the pitch stability of the finished piano; on the other hand, due to the large size of the piano, this method will take up more space, making this detection method economical, The rationality is poor. For example, if the finished pianos of foreign piano factories are transferred to the musical instrument testing center, the cost will be high, and the musical instrument testing agency needs to prepare corresponding venues, and the temperature and humidity environments are quite different, and the production standards and testing standards should not be unified; if It is not practical for the musical instrument testing agency to send people to the scene to test one by one

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