作　　者： (叶旸）; (张雪凡）; (刘源）; (王臣）; (黄庆）;

机构地区： 上海大学通信与信息工程学院,上海200072

出　　处： 《电子测量技术》 2017年第8期240-245,共6页

摘　　要： 设计了一种可穿戴式智能音乐纠错系统,能够及时地提醒音乐练习者的演奏错误。该系统能实时采集演奏者弹奏的乐音信息,由短时平均能量法找出乐音端点后对端点间信号做FFT和次谐波求和提取基频作为频域特征,将两乐音端点间时间差作为时域特征,通过与标准乐音对比找出演奏过程中的错误所在,系统及时提醒演奏者并将错误记录。硬件方案体积小、低功耗,软件的乐音对比算法简洁高效,经现场的实际检验测试,达到了预想的效果。 This paper introduces a wearable intelligent music correction system, which can promptly remind the music practitioner＇s playing errors. The system can collect the music information played by the player in real time, find out the music endpoint from the short-term average energy method and do FFT and sub-harmonic summation on the signal between the end points as frequency domain feature. The time difference between the two tone ends as time domain feature, through comparison with the standard music to find out the error in the process of playing, the system promptly remind player and record error. The system is small, efficient and energy-saving, experiments demonstrate that this system can achieve expected results.

关 键 词： 可穿戴设备 乐音对比 基频提取 音乐纠错 基