Design On Speech Enhancement System For Home Environment

Speech enhancement technology is an effective method to solve speech noise pollution and an important research field of speech signal processing.Although this technology is relatively mature and has been widely used in the home environment,due to the complexity of the noise in the home environment,voice enhancement system still has problems such as poor robustness and poor effect of voice interaction experience.Therefore,speech enhancement systems based on the family environment as the research object,aiming at these problems,by analyzing the characteristics of several kinds of speech enhancement algorithm,and the speech and noise characteristics of the family environment,given a set of speech enhancement based on LMS algorithm design scheme of the system,and at the same time develop a demo system based on DSP real-time speech enhancement,under the premise of the system without the use of auxiliary means also achieve a good effect.In this paper,the main research work is as follows: 1)In this paper,the research status of speech enhancement technology,introduces several typical speech enhancement method,analysis and comparison,analyzes the phonetic features in the family environment at the same time,aimed at the phonetic features in family environment,determined using the least mean square(LMS)algorithm to enhance the family environment voice.2)Using MATLAB GUI module design,speech enhancement systems based on LMS algorithm was established to simulate the two kinds of common engineering environment noise,white noise and refer to the single pulse shock signal,and by using a practical acceptance of audio signal in both the reference signal input to the speech enhancement system validation experiment,ultimately through subjective and objective assessment of speech enhancement method,proved that the system working effect is ideal.3)Aiming at the home environment speech enhancement system designed by LMS algorithm,a hardware simulation platform based on DSP is designed and implemented.Experimental results show that the designed speech enhancement system can effectively remove noise interference in the home environment and achieve a good enhancement effect.