embdrv/lc3/Common/Tables/TemporalNoiseShapingTables.cpp

/*
 * TemporalNoiseShapingTables.cpp
 *
 * Copyright 2021 HIMSA II K/S - www.himsa.com. Represented by EHIMA -
 * www.ehima.com
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

// LC3 Specification d09r01.pdf
// Section 5.7.4 Temporal Noise Shaping
#include "TemporalNoiseShapingTables.hpp"

// LC3 Specification d09r01.pdf; Page 109 of 177
short ac_tns_order_bits[2][8] = {
    {17234, 13988, 11216, 8694, 6566, 4977, 3961, 3040},
    {12683, 9437, 6874, 5541, 5121, 5170, 5359, 5056}};
short ac_tns_order_freq[2][8] = {{3, 9, 23, 54, 111, 190, 268, 366},
                                 {14, 42, 100, 157, 181, 178, 167, 185}};
short ac_tns_order_cumfreq[2][8] = {{0, 3, 12, 35, 89, 200, 390, 658},
                                    {0, 14, 56, 156, 313, 494, 672, 839}};
// LC3 Specification d09r01.pdf; Page 110 of 177
short ac_tns_coef_bits[8][17] = {
    {20480, 15725, 12479, 10334, 8694, 7320, 6964, 6335, 5504, 5637, 6566, 6758,
     8433, 11348, 15186, 20480, 20480},
    {20480, 20480, 20480, 20480, 12902, 9368, 7057, 5901, 5254, 5485, 5598,
     6076, 7608, 10742, 15186, 20480, 20480},
    {20480, 20480, 20480, 20480, 13988, 9368, 6702, 4841, 4585, 4682, 5859,
     7764, 12109, 20480, 20480, 20480, 20480},
    {20480, 20480, 20480, 20480, 18432, 13396, 8982, 4767, 3779, 3658, 6335,
     9656, 13988, 20480, 20480, 20480, 20480},
    {20480, 20480, 20480, 20480, 20480, 14731, 9437, 4275, 3249, 3493, 8483,
     13988, 17234, 20480, 20480, 20480, 20480},
    {20480, 20480, 20480, 20480, 20480, 20480, 12902, 4753, 3040, 2953, 9105,
     15725, 20480, 20480, 20480, 20480, 20480},
    {20480, 20480, 20480, 20480, 20480, 20480, 12902, 3821, 3346, 3000, 12109,
     20480, 20480, 20480, 20480, 20480, 20480},
    {20480, 20480, 20480, 20480, 20480, 20480, 15725, 3658, 20480, 1201, 10854,
     18432, 20480, 20480, 20480, 20480, 20480}};
short ac_tns_coef_freq[8][17] = {
    {1, 5, 15, 31, 54, 86, 97, 120, 159, 152, 111, 104, 59, 22, 6, 1, 1},
    {1, 1, 1, 1, 13, 43, 94, 139, 173, 160, 154, 131, 78, 27, 6, 1, 1},
    {1, 1, 1, 1, 9, 43, 106, 199, 217, 210, 141, 74, 17, 1, 1, 1, 1},
    {1, 1, 1, 1, 2, 11, 49, 204, 285, 297, 120, 39, 9, 1, 1, 1, 1},
    {1, 1, 1, 1, 1, 7, 42, 241, 341, 314, 58, 9, 3, 1, 1, 1, 1},
    {1, 1, 1, 1, 1, 1, 13, 205, 366, 377, 47, 5, 1, 1, 1, 1, 1},
    {1, 1, 1, 1, 1, 1, 13, 281, 330, 371, 17, 1, 1, 1, 1, 1, 1},
    {1, 1, 1, 1, 1, 1, 5, 297, 1, 682, 26, 2, 1, 1, 1, 1, 1}};
short ac_tns_coef_cumfreq[8][17] = {{0, 1, 6, 21, 52, 106, 192, 289, 409, 568,
                                     720, 831, 935, 994, 1016, 1022, 1023},
                                    {0, 1, 2, 3, 4, 17, 60, 154, 293, 466, 626,
                                     780, 911, 989, 1016, 1022, 1023},
                                    {0, 1, 2, 3, 4, 13, 56, 162, 361, 578, 788,
                                     929, 1003, 1020, 1021, 1022, 1023},
                                    {0, 1, 2, 3, 4, 6, 17, 66, 270, 555, 852,
                                     972, 1011, 1020, 1021, 1022, 1023},
                                    {0, 1, 2, 3, 4, 5, 12, 54, 295, 636, 950,
                                     1008, 1017, 1020, 1021, 1022, 1023},
                                    {0, 1, 2, 3, 4, 5, 6, 19, 224, 590, 967,
                                     1014, 1019, 1020, 1021, 1022, 1023},
                                    {0, 1, 2, 3, 4, 5, 6, 19, 300, 630, 1001,
                                     1018, 1019, 1020, 1021, 1022, 1023},
                                    {0, 1, 2, 3, 4, 5, 6, 11, 308, 309, 991,
                                     1017, 1019, 1020, 1021, 1022, 1023}};