15e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh/* 25e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh * Copyright 1992 by Jutta Degener and Carsten Bormann, Technische 35e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh * Universitaet Berlin. See the accompanying file "COPYRIGHT" for 45e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh * details. THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE. 55e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh */ 65e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh 75e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh/* $Header: /tmp_amd/presto/export/kbs/jutta/src/gsm/RCS/table.c,v 1.1 1992/10/28 00:15:50 jutta Exp $ */ 85e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh 95e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh/* Most of these tables are inlined at their point of use. 105e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh */ 115e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh 125e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh/* 4.4 TABLES USED IN THE FIXED POINT IMPLEMENTATION OF THE RPE-LTP 135e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh * CODER AND DECODER 145e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh * 155e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh * (Most of them inlined, so watch out.) 165e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh */ 175e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh 185e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh#define GSM_TABLE_C 195e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh#include "private.h" 205e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh#include "gsm.h" 215e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh 225e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh/* Table 4.1 Quantization of the Log.-Area Ratios 235e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh */ 245e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh/* i 1 2 3 4 5 6 7 8 */ 255e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yehword gsm_A[8] = {20480, 20480, 20480, 20480, 13964, 15360, 8534, 9036}; 265e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yehword gsm_B[8] = { 0, 0, 2048, -2560, 94, -1792, -341, -1144}; 275e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yehword gsm_MIC[8] = { -32, -32, -16, -16, -8, -8, -4, -4 }; 285e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yehword gsm_MAC[8] = { 31, 31, 15, 15, 7, 7, 3, 3 }; 295e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh 305e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh 315e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh/* Table 4.2 Tabulation of 1/A[1..8] 325e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh */ 335e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yehword gsm_INVA[8]={ 13107, 13107, 13107, 13107, 19223, 17476, 31454, 29708 }; 345e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh 355e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh 365e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh/* Table 4.3a Decision level of the LTP gain quantizer 375e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh */ 385e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh/* bc 0 1 2 3 */ 395e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yehword gsm_DLB[4] = { 6554, 16384, 26214, 32767 }; 405e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh 415e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh 425e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh/* Table 4.3b Quantization levels of the LTP gain quantizer 435e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh */ 445e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh/* bc 0 1 2 3 */ 455e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yehword gsm_QLB[4] = { 3277, 11469, 21299, 32767 }; 465e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh 475e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh 485e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh/* Table 4.4 Coefficients of the weighting filter 495e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh */ 505e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh/* i 0 1 2 3 4 5 6 7 8 9 10 */ 515e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yehword gsm_H[11] = {-134, -374, 0, 2054, 5741, 8192, 5741, 2054, 0, -374, -134 }; 525e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh 535e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh 545e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh/* Table 4.5 Normalized inverse mantissa used to compute xM/xmax 555e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh */ 565e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh/* i 0 1 2 3 4 5 6 7 */ 575e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yehword gsm_NRFAC[8] = { 29128, 26215, 23832, 21846, 20165, 18725, 17476, 16384 }; 585e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh 595e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh 605e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh/* Table 4.6 Normalized direct mantissa used to compute xM/xmax 615e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh */ 625e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yeh/* i 0 1 2 3 4 5 6 7 */ 635e4516958690b9a1b2c98f88eeecba3edd2dbda4Chia-chi Yehword gsm_FAC[8] = { 18431, 20479, 22527, 24575, 26623, 28671, 30719, 32767 }; 64