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Piano tuning is the act of adjusting the tension of the strings of an acoustic piano so that the musical intervals between strings are in tune. The meaning of the term 'in tune', in the context of piano tuning, is not simply a particular fixed set of pitches. Fine piano tuning requires an assessment of the vibration interaction among notes, which is different for every piano, thus in practice requiring slightly different pitches from any theoretical standard. Pianos are usually tuned to a modified version of the system called equal temperament. (See Piano key frequencies for the theoretical piano tuning.)
An intelligent automatic piano tuning system and method based on an edge-cloud collaborative architecture
This invention discloses an intelligent automatic piano tuning system and method based on an edge-cloud collaborative architecture, belonging to the field of automatic musical instrument tuning technology. It includes: a mobile terminal for acquiring string audio, extracting the fundamental frequency, and generating tuning commands; a cloud server, communicatively connected to the mobile terminal, for generating a personalized target frequency table based on the acoustic characteristics of the strings using a global optimization algorithm; and a physical execution terminal, communicatively connected to the mobile terminal, including a microcontroller and a motor drive unit, for receiving the tuning commands and driving the motor to adjust the tuning pins in a closed-loop manner. This invention achieves low-cost, high-precision, and fully automatic piano tuning, can generate extended tuning curves comparable to those in concert halls, and has multiple safety protections, making it suitable for daily pitch maintenance in homes, music stores, and music schools.
Owner:覃刘浩然