Lines Matching refs:lpc
179 * @param lpc LPC coefficients vector
183 static void levinson_durbin(int16_t *lpc, int16_t *autocorr, int16_t error)
189 memset(lpc, 0, LPC_ORDER * sizeof(int16_t));
195 temp -= lpc[j] * autocorr[i - j - 1];
203 lpc[i] = av_clipl_int32((int64_t) (partial_corr << 14) +
211 memcpy(vector, lpc, i * sizeof(int16_t));
214 lpc[j] = av_clipl_int32((int64_t) (lpc[j] << 16) - temp +
225 * @param lpc LPC coefficients vector
227 static void comp_lpc_coeff(int16_t *buf, int16_t *lpc)
231 int16_t *lpc_ptr = lpc;
243 static void lpc2lsp(int16_t *lpc, int16_t *prev_lsp, int16_t *lsp)
255 lsp[i] = (lpc[i] * bandwidth_expand[i] + (1 << 14)) >> 15;
432 * @param unq_lpc unquantized lpc vector
635 * @param qnt_lpc quantized lpc coefficients