A kind of piano self-tuning system and tuning method

Abstract

The present invention provides a self-tuning system for pianos. According to the system, the frequency value of a piano pitch curve, with automatically corrected harmonics frequency, is adopted as the tuning standard of each tone. The frequency value is compared with the actual fundamental frequencies of a high-pitch zone, an alto zone and a base zone calculated according to different algorithms, and then a tuning recommendation is given. The self-tuning system for pianos comprises a tone selection unit, an audio acquisition unit, a frequency analysis unit, a pitch curve correction unit, a frequency comparison unit and a result output unit. The invention also provides a self-tuning manner. According to the prompt of the invention, the self-tuning process of pianos can be completed. For different characteristics of each piano, different piano pitch curves are automatically generated for tuning purpose. Meanwhile, tuning recommendations of the same hierarchy with professional tuners are provided. Based on the method, the tuned tones of each piano are consistent with a transverse reverse-S type piano pitch curve of the piano, wherein high pitches are on the high side and low pitches are on the low side. Meanwhile, the timbres of the piano are natural and harmonious.

Description

technical field [0001] The invention relates to the field of musical instruments, in particular to a piano self-tuning system and a tuning method. Background technique [0002] In order to maintain the accuracy of the piano sound, the piano needs to be regularly checked by professionals to adjust the inaccurate sound. Usually, the home piano needs to be tuned once every six months to one year. For a long time, piano tuning has relied on professional tuners, which is not only expensive and inconvenient, but also the quality of tuning is affected by the level of the pianist. After all, there are very few excellent piano tuners with excellent hearing and high musical literacy. [0003] The present existing piano automatic tuning instrument is expensive and complicated in device, and has poor practicability. Such as the piano automatic tuning device and its automatic tuning method mentioned in patent CN101807391A, this kind of piano automatic tuning device includes a piano body...

AI Technical Summary

Problems solved by technology

[0011] The present invention is aimed at the inaccurate tuning of the prior art; the prior art adopts the theoretical pitch, that is, the standard frequency, as the tuning standard, and the tuned tone is blunt, lacks the beauty of natural harmony, and does not conform to the horizontal pitch of the piano, which is too high and the bass is low. The problem of the anti-S-shaped intonation curve; the prior art uses an intonation curve with a definite constant value, and different intonation curves cannot be used according to the different characteristics of each piano, and the intonation curve cannot be automatically corrected according to each piano that needs to be tuned problem, invented a piano self-tuning system and tuning method

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