earticle

영어

There are various methods to improve signal under the clipped environment of voiced sound in the voice signal processing. In the case of the majority of clipping signal restoration, it will be concentrated in sound quality deterioration of low frequency as they are converged into voiced sound from the characteristic viewpoint of sound quality deterioration. Therefore, in the case of clipping of voiced sound section, great efforts have been contributed for sound quality improvement and restoration. From this study, the method to improve clipped voice signal will be proposed. Voiced sound section is created by utilizing the fact that differentiation and clipped signal in voice signal are supposed to give small influence for the evaluation of recognition level. In here, for the signal which is obtained by stressing amplitude at voiced sound section where most of them are distributed, the method of emphasizing synthesis with original signal was used.