Design of Low Bit Rate VSELP Codebook for the Korean Speech

한국어 음성에 있어서 저전송률을 갖는 개선된 VSELP코드북 설계

  • 김형종 (조선대학교 대학원 전자공학과) ;
  • 한승조 (조선대학교 전자 정보통신공학부)
  • Published : 1999.09.01

Abstract

This paper proposed an improved 4.8kbps VSELP in order to keep the good quality in band-limited channel. In the most cases, it is difficult to keep the good quality at the low bit rate. In order to solve the problems, many methods are proposed, but they are not suitable to the Korean language structure because they are designed for being suitable to the foreign language structure. In experiment, we use the noseless Korean voice data. We show that the proposed 4.8kbps VSELP is not excellent to the 8kbps VSELP in SEGWSNR(Segmentally Weighted SNR), but it is the superior to the 8kbps VSELP in the MOS(Mean Opinion Score) test.

Keywords