基于声信号反馈的葫芦丝演奏机器人仿真设计

Simulation design of gourd flute playing robot based on sound signal feedback

针对管乐器演奏机器人在演奏过程中气息难以精确控制,从而导致演奏稳定性差、演奏效果不佳的问题,设计了一种基于声音信号反馈的葫芦丝演奏机器人。介绍了葫芦丝机器人的整体结构和控制方案;根据机器人演奏的特点,设计了基于标准基音频率的数字低通滤波器对声音信号进行滤波,并在此基础上采用改进的谐波峰值法提取声音的基音频率,实现葫芦丝机器人演奏过程的闭环控制。通过实验仿真验证了设计的可行性。与一般的管乐器机器人演奏系统相比,此设计具有更好的稳定性和抗干扰能力。

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.