Auxiliary piano tuning system

Abstract

The invention discloses an auxiliary piano tuning system which comprises a microphone, a signal conditioning circuit, a microprocessor, a PC, a JPAG interface, an SRAM, press keys and an LCD screen. Through the microphone, sampling is performed to obtain digital signals; through the conditioning circuit, the signals are conditioned to an order of magnitude at which all signals can be normally processed; the digital signals are used as an input source of an audio filtering module; the digital signals are filtered through FFT; the filtered audio signals are compared with a standard audio signal;the tension of a piano string is regulated according to a measured difference value between the audio signals and the standard audio signal; and finally, the piano tuning work is completed. The auxiliary piano tuning system has the advantages that the use is convenient; the measurement is accurate; the display is clear; the labor is saved; and the efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of auxiliary tuning, in particular to a piano auxiliary tuning system. Background technique [0002] As the king of musical instruments, the piano is widely used in various places. Different from other products, the piano is not repaired and adjusted if there is a problem. The piano must be tuned and adjusted before it can be used. A piano in good condition can make the user feel at ease, so as to fully show the charm of music works. Using a piano with an inaccurate rhythm for a long time will not only reduce the service life of the piano, but also cause deviations in the hearing of the human ear. Regularly check the piano Tuning and adjustment are important factors to ensure the quality of the piano. As the piano becomes more and more popular, more and more people pay attention to the tuning of the piano. The traditional piano tuning is judged by the tuner based on his own human hearing and experience. T...

AI Technical Summary

Problems solved by technology

The traditional piano tuning is judged by the tuner based on his own human hearing and experience. The tuner uses the twelve equal temperament, unison, octave tuning methods, and the tuning inspection method of four-fifths and three-sixths Carry out piano tuning. In this case, the subjective judgment of the tuner plays an important role in the accuracy of piano tuning, and the error of piano pitch is relatively large.

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