Bao Changchun, Dai Yisong, Fan Changxin. A REAL-TIME IMPLEMENTATION OF 4.2Kb/s CELP SPEECH CODING[J]. Journal of Electronics & Information Technology, 1997, 19(1): 50-55.
Citation:
Bao Changchun, Dai Yisong, Fan Changxin. A REAL-TIME IMPLEMENTATION OF 4.2Kb/s CELP SPEECH CODING[J]. Journal of Electronics & Information Technology, 1997, 19(1): 50-55.
Bao Changchun, Dai Yisong, Fan Changxin. A REAL-TIME IMPLEMENTATION OF 4.2Kb/s CELP SPEECH CODING[J]. Journal of Electronics & Information Technology, 1997, 19(1): 50-55.
Citation:
Bao Changchun, Dai Yisong, Fan Changxin. A REAL-TIME IMPLEMENTATION OF 4.2Kb/s CELP SPEECH CODING[J]. Journal of Electronics & Information Technology, 1997, 19(1): 50-55.
This paper presents a real-time implementation of 4.2Kb/s CELP speech coding on single DSP. An algorithm reducing search complexity for adaptive codebook is suggested, the solving method, which changes a parameter into LSP parameter, is discussed. The real-tune implementation procedure of this coding on a commercial development board with a single TMS320C30 is discribed.
Schroeder M R,Atal B S. Code-excited linear prediction(CELP): High quality speech at very low[2]bit rates. in Proc. IEEE Int. Conf. ASSP, Tampa, FL: 1985, 937-940.[3]Cuperman V, Gersho A, Pettigrew R. Low-delay vector excitation coding of speech at 16Kb/s. IEEE[4]Trans. on COM., 1992, COM-40(1): 129-139.[5]Gerson I, Jasiuk M A. Vector sum excited linear prediction(VSELP) speech coding at 8Kbps. in Proc. IEEE Int. Conf. ASSP, New Mexico, USA: 1990, 461-464.[6]Campbell J P, Welch V C, Tremain T E. An expandable error-protected 4800bps CELP coder(U. S.[7]Federal standard 4800bps voice coder). in Proc. IEEE Int. Conf. ASSP, Glasgow, Scotland: 1989, 735-738.[8]Bao Cha,ngchun, et al. Improved populating code-excited linear predictive coder. The Journal of[9]China Universities of Posts and Telecommunications. 1994, 1(1), 45-51.[10]鲍长春,等.码激励线性预测语音编码快速算法及评价.电子科学学刊,1995, 17(1): 70-79.