摘要
根据声音信号在陀螺电机不同运行阶段能量变化情况,将声音信号能量元的概念以及多尺度变化阈值的思想结合,研究了一种基于能量元的多尺度浮动阈值陀螺电机声音信号小波降噪方法。经实测数据验证试验表明,该方法取得了比较好的去噪效果。
The paper studies on the preprocessing of acoustic signal.Based on analysises of normal methods of acoustic signal processing,a wavelet denoising algorithm based on power cell float threshold is studied considering the change of signal power between different stages,and good performance is obtained.
出处
《信息技术》
2012年第4期131-134,共4页
Information Technology
关键词
声音信号
能量元
浮动阈值
陀螺电机
小波
acoustic signals
power cell
float threshold
gyro motor
wavelet
