基于FIR滤波器的基音提取预处理  

Pitch Pretreatment Based on the FIR Filter

作　　者：龚英姬[1] 任志勇[1] 

机构地区：[1]河池学院物理与电子工程系,广西宜州546300

出　　处：《河池学院学报》2008年第5期58-61,共4页Journal of Hechi University

摘　　要：基音周期是语音信号的重要参数,在语音分析、语音合成和语音识别中,估计基音周期都是一个重要任务。基于MATLAB设计的FIR滤波器,可以随时对比设计要求和滤波器特性调整参数,直观简便,极大的减轻了工作量,使滤波器设计最优化,在语音信号基音提取预处理方面具有精度高、稳定性好、灵活性强等优点,滤波效果较好。把其应用于基音提取预处理将为基音提取后继工作打下良好基础。Pitch cycle is an important parameter of voice signal, what is an important task to estimate pitch cycle in voice analysis, voice synthesis and voice recognition. The FIR filter designed on the basis of MATLAB can adjust the parameters in terms of design requirements and characteristics of the filter, which seems intuitional and simple. It also reduces the workload to optimize the design of the filter. In the advanced disposal of the pitch extraction of the voie signal. This filter has many advantages, such as high accuracy, good stability and strong adaptablility etc. and has better filtering effect. Applied to the advanced disposal of the pitch extraction, the method will serve as a firm foundation for the following wark of pitch extraction.

关 键 词：语音 基音频率 共振峰 MATLAB FIR滤波器 

分 类 号：TN912[电子电信—通信与信息系统]