Analysis of Noise Reduction Techniques in Speech Recognition

Compared with keyboard input, speech recognition has its strengths—it is more in line with the natural communication of people and frees people's hands. In recent years, with the development of artificial intelligence, speech recognition technology has developed rapidly, and the recognition rate is generally in excess of 90%. However, in the case of environmental noise, recognition rates of current speech recognition products have been severely reduced, and most of them cannot work normally. How to enhance these voices with noise and restore the information of the original signal to the greatest extent is an urgent problem. This article summarizes some current mainstream noise reduction algorithms, and compares them by explaining principles of these algorithms. Finally, this article makes a brief prediction of the general development direction of the speech enhancement field in the future.