Aiming at problem that breath of wind instruments robot is difficult to control precisely in the process of playing

which results in poor control stability and bad play performance

design a kind of gourd flute playing robot based on sound signal feedback. Introduce overall structure and control scheme of gourd flute playing robot;according to characteristics of robot performance

a digital low-pass filter is designed based on standard pitch frequency to filter sound signal

and on this basis

uses improved harmonic peak value method to extract sound pitch frequency

achieve closed-loop control of gourd flute robot in the process of playing. Feasibility of the design is verified by simulation experiment. Compared with the general pipe robot play system

this design has better stability and anti-interference ability.