菏泽学院学报

结合数字滤波器的理论基础和设计方法,在MATLAB程序语言环境下,设计出有限长单位脉冲响应(FIR)数字滤波器,同时利用GUI界面设计FIR数字滤波器人机交互平台,该系统平台界面直观、操作简单且功能齐全,可实现对加噪语音信号的去噪滤波功能.平台主要包括语音信号、加噪信号、FIR数字滤波器设计和去噪信号四个模块,用户可根据读入的语音信号及噪声信号特点调整滤波器技术指标,实现滤波器的优化设计,最终达到FIR数字滤波器对语音信号的去噪处理效果.

Based on the basic theory and design method of digital filter,in MATLAB programming environment,to design finite impulse response(FIR)digital filter and FIR digital filter design using GUI interface of human-computer interaction platform,the platform,intuitive interface,simple operation and complete functions,can be realized on the noisy speech signal filtering function.The platform mainly includes the speech signal and noise signal,FIR digital filter design and signal denoising of four modules,the user can according to the speech signal and noise signal characteristics of technical index of filter adjusting read,realizing the optimization design of the filter,and ultimately achieve the FIR digital filter of speech signal denoising effect.