Automatic string instrument tone tuning method based on wireless sensor network

Abstract

The invention discloses an automatic string instrument tone tuning method based on a wireless sensor network. An information transmission network is constructed through a communication function of wireless sensor network nodes, the vibration frequencies of strings are sensed through a sensor, a feedback signal is sent out after the vibration frequencies are compared with the reference frequency transmitted by wireless sensor network submergence points through a differentiator, and string shafts on the nodes are controlled to be correspondingly tensioned or loosened. According to the method, the wireless sensor network technology is introduced, the sensor network nodes are combined with the automatic tone tuning mechanism, and not only can intonation of a string instrument be automatically tuned, but also a music director can give instructions to correct intonation of all node instruments through the wireless sensor network submergence points. Not only is playing intonation of a string instrument promoted, but also a traditional tone tuning mode taking a single instrument as a main body is broken through, and the music direction can give the instructions to the corresponding instruments from a center control terminal in a unified mode or selectively tunes the pitch of a few instrument individuals.

Description

technical field [0001] The invention relates to the field of musical instrument tuning, in particular to an automatic tuning method for stringed musical instruments based on a wireless sensor network. Background technique [0002] Tuning is the basic pitch calibration work for stringed instruments before playing. Due to the composition characteristics of stringed instruments, the strings are fixed on the instrument by rotatable shafts, and tension is applied to the strings through the shafts. The vibration frequency of the strings changes with the The amount of tension applied changes, which in turn changes the pitch of the sound produced. At present, the technology commonly used in the orchestra is to use the tuner to provide the prompt signal of the pitch, and then the musician rotates the shaft of the string to adjust the pitch according to the instruction of the signal; The pitch is adjusted by the player's own pitch instead of the cue signal of the instrument. However...

AI Technical Summary

Problems solved by technology

[0004] (1) The pitch accuracy of each musician is different, and it is difficult to achieve accurate pitch calibration

[0005] (2) When the musician adjusts the strings according to the light signal of the tuner, since the piano shaft is still rotated by hand, the force exerted by human muscles on the piano shaft is different from individual props, resulting in a large error in the adjustment accuracy

[0006] (3) The tuner is separated from the instrument body. It is difficult to adjust the pitch of the strings in a short time when performing on the stage. It is not suitable for large-scale performances and other occasions that require real-time applications.

[0008] (1) The type that is separated from the musical instrument requires a hand-held device and adjustment of the piano axis through the mobile APP, which cannot be used conveniently and is not suitable for orchestra performances

[0009] (2) The type combined with the instrument body currently only provides products and designs for guitars, and there are no suitable products for other stringed instruments

[0010] (3) Tuning is based on a single musical instrument, and there is no unified mechanism for tuning the musical instruments of the orchestra, lacking group unity

[0011] (4) Existing products are only designed for absolute pitch. For example, the absolute pitch frequency corresponding to central A (A4) is 440Hz physically. Therefore, existing products are adjusted at this frequency as the pitch of A4. However, many In practical applications, in order to match the artistic conception and performance effect of the music, many musicians will adjust A4 to the pitch corresponding to 442Hz, which cannot be achieved by existing active tuners

[0012] (5) The existing tuning technology is only designed for a single musical instrument. In the case of an orchestra performance, the music director responsible for the performance of the music can only convey the requirements of the performance of the music to the musicians before the performance, and cannot Appropriate fine-tuning during the performance