지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
A new variable rate speech coding technique is proposed. The method is based on the observation that the speech signal approximately looks linear for a very short period of time. The information transmitted is the location and data value of inflection points. If the distance between the inflection points is large, the mid point location and its data value are also delivered. Thus, the encoder transmits both the location and the data value for the inflection samples, but the location only for the non-inflection points. The location information is expressed using one bit for each sample, 0 for non-inflection and 1 for inflection point. At the receiver, using the interpolation, the decoder estimates the untransmitted sample values for non-inflection locations from the received sample values for the inflection samples. With 50 % of computational cost of the existing CVSD delta modulation, the proposed method is expected to achieve the data rate of 36 to 38 kbps and the SNR of 10 to 13 dB.
목차
Abstract
1. 서론
2. 변곡점 추출에 기반한 음성부호화 및 복호화 기법
3. 음성 부호화 및 복호화 예제
4. 실험 및 고찰
5. 결론
References
참고문헌 (5)
참고문헌 신청
1. [단행본] - A. M. Kondoz / 1994 / Digital Speech / Wiley
2. [학술지(정기간행물)] - B. Boashash / 1992 / Estimating and interpreting the instantaneous frequency of a signal-Part 2: algorithms and applications / Proc. of the IEEE 80 : 540 ~ 568
3. [단행본] - D. G. Childers / 2000 / Speech Processing and Synthesis Toolboxes / Wiley
4. [단행본] - P. J. Davis / 1975 / Interpolation and Approximation / Dover
5. [단행본] - L.R. Rabinar / 1978 / Digital Processing of Speech Signals / Prentice-Hall
2. [학술지(정기간행물)] - B. Boashash / 1992 / Estimating and interpreting the instantaneous frequency of a signal-Part 2: algorithms and applications / Proc. of the IEEE 80 : 540 ~ 568
3. [단행본] - D. G. Childers / 2000 / Speech Processing and Synthesis Toolboxes / Wiley
4. [단행본] - P. J. Davis / 1975 / Interpolation and Approximation / Dover
5. [단행본] - L.R. Rabinar / 1978 / Digital Processing of Speech Signals / Prentice-Hall
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UCI(KEPA) : I410-ECN-0101-2014-500-003121273