earticle

영어

On speech signal processing, it is very important to find the fundamental frequency of voice. The reason is why it is used in variable places, such as speech-enhancement-system, speech-recognition system, speaker-classification-system, and handicapped assisting-system. However the pitch detection is difficult when the original signal is corrupted by noise, or put in transition section of voice. In this paper, we make proposal of the method that enhance accuracy of pitch detection system, through SNR compensation using time-domain SNR estimator with continuous voice signal. And we proved the performance of the detector, in drawing pitch contour of variable SNR signals.