基于频率遮掩法的磨音信号处理

摘要

利用有限冲激响应(FIR)滤波器进行磨音信号处理时,滤波器的阶数过高,会引起滤波器实时性交差及硬件成本增高等问题,采用频率遮掩法(FRM)对磨音信号进行处理,仿真结果表明,与传统的FIR滤波器相比,应用频率遮掩法时,选择合适的内插值能有效降低FIR滤波器的阶数,进而提高磨音信号处理的实时性及降低硬件成本.%The problems of worse real - time and higher hardware cost of filter will be leaded by high order of the finite impulse response ( FIR) filter when it is used to mill sound processing. The method of frequency response masking ( FRM) is adopted to design the filter for mill sound. Simulation results demonstrate that,compared with traditional FIR filter using FRM and choosing a befitting in- ■ terpolation value can effectively reduce the order of filter and solve the above problems.