lsp_interpolate  1199 libavcodec/g723_1.c         lsp_interpolate(lpc, cur_lsp, p->prev_lsp);
lsp_interpolate  1289 libavcodec/g723_1.c         lsp_interpolate(lpc, p->sid_lsp, p->prev_lsp);
lsp_interpolate  2398 libavcodec/g723_1.c     lsp_interpolate(qnt_lpc, cur_lsp, p->prev_lsp);