hash stringlengths 32 32 | doc_id stringlengths 7 13 | section stringlengths 3 121 | content stringlengths 0 2.2M |
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79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.6.4.3 quad_sign_bits - quad sign bits | This element contains additional sign bits that are transmitted for each quantized spectral line that is different to zero when an unsigned Huffman codebook of dimension four is used for the quantized spectral lines. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.6.4.4 pair_sign_bits - pair sign bits | This element contains additional sign bits that are transmitted for each quantized spectral line that is different to zero when an unsigned Huffman codebook of dimension two is used for the quantized spectral lines. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.6.4.5 ext_code - extension code | This element is an extension code that is used in connection with Huffman codebook 11. For details, see clause 5.1.2. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.6.5 asf_scalefac_data - ASF scale factor data | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.6.5.1 reference_scale_factor - reference scale factor | This element specifies the reference scale factor. The first scale factor used in the decoding process is equal to the reference scale factor. The remaining scale factor values are derived via delta decoding. See clause 6.2.6.4 for details. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.6.5.2 asf_sf_hcw - Huffman coded scale factor delta | This element holds a Huffman coded delta value used for the dpcm_sf[g][sfb] determination. See clause 6.2.6.4 for details. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.6.6 asf_snf_data - ASF spectral noise fill data | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.6.6.1 b_snf_data_exists - spectral noise fill data exists flag | This Boolean indicates whether spectral noise fill data shall follow in the bitstream. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.6.6.2 asf_snf_hcw - Huffman code spectral noise fill delta | This element holds a Huffman coded delta value used for the dpcm_snf[g][sfb] determination. See clause 5.1.4 for details. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7 Speech spectral frontend | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.1 ssf_data - Speech spectral frontend data | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.1.1 b_ssf_iframe - SSF I-frame flag | This Boolean indicates whether the first speech spectral front end (SSF) granule in the ssf_data is an SSF-I-frame. The first SSF granule in the ssf_data is an SSF-I-frame if either b_iframe in the ac4_substream_info or b_ssf_iframe is true. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.2 ssf_granule - speech spectral frontend granule | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.2.1 stride_flag - stride flag | This value of this element indicates the SSF coder mode and the number of SSF blocks per SSF granule, num_blocks, as shown in table 111. The stride_flag shall be set to 0 for SSF configurations that do not allow for a short stride mode as indicated by a value of 1 in the "Maximum number of SSF blocks" column in table 1... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.2.2 SSF configuration | The SSF configuration depends on the sampling frequency and the frame_rate_index as shown in table 112 and table 113. Table 112: SSF configuration for 48 kHz sampling frequency frame_rate_index Video frame rate [fps] Frame length (samples) frame_length SSF granule length (samples) granule_length Maximum number of SSF b... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.2.3 num_bands_minus12 - number of SSF coded bands minus 12 | This element indicates the number of SSF coded bands minus 12. To get the number of SSF coded bands, num_bands, a value of 12 needs to be added to num_bands_minus12. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.2.4 predictor_presence_flag[b] - predictor presence flag for block b | If set, this bit indicates the existence of predictor parameters in the bitstream for block b. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.2.5 delta_flag[b] - delta coding flag for block b | If set, this bit indicates the usage of the differential coding of the prediction lag for block b. ETSI ETSI TS 103 190-1 V1.4.1 (2025-07) 94 |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.3 ssf_st_data - speech spectral frontend static data | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.3.1 env_curr_band0_bits - signal envelope index for band 0 | This element indicates the signal envelope index for band 0. The envelope decoder expects this value in env_idx[0] . |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.3.2 env_startup_band0_bits - startup envelope index for band 0 | This element indicates the extra startup envelope index for band 0. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.3.3 gain_bits[b] - envelope gain bits for block b | This element indicates a gain index for block b. The gain index is derived by adding an offset value of -8 to the gain bits value: gain_idx[b] = gain_bits[b] - 8. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.3.4 predictor_lag_delta_bits[b] - predictor lag delta for block b | This element indicates a predictor lag delta to be used for the predictor lag index calculation for block b. See clause 5.2.4. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.3.5 predictor_lag_bits[b] - predictor lag index for block b | This element indicates the predictor lag index directly for block b. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.3.6 variance_preserving_flag[b] - variance preserving flag for block b | If set, this bit indicates that variance preserving for block b shall be used. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.3.7 alloc_offset_bits[block] - allocation offset bits for block b | This element indicates a value to be used for calculating an allocation offset for block b. See clause 5.2.5 for usage details. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.4 ssf_ac_data - speech spectral frontend arithmetic coded data | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.4.1 env_curr_ac_bits - arithmetic coded signal envelope indices | This element contains num_bands - 1 arithmetic coded signal envelope indices for band indices 1 to num_bands - 1. The arithmetic decoded values are stored in env_idx[band], which is an input signal of the envelope decoder. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.4.2 env_startup_ac_bits - arithmetic coded startup envelope indices | This element contains num_bands - 1 arithmetic coded extra startup envelope indices for band indices 1 to num_bands - 1. The startup envelope is decoded like the signal envelope and the decoded startup envelope is used as previous envelope env_prev[band] by the envelope decoder. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.4.3 predictor_gain_ac_bits[b] - arithmetic coded predictor gain index for block b | This element contains one arithmetic coded predictor gain index for block b. 4.3.7.4.4 q_mdct_coefficients_ac_bits[b] - arithmetic coded quantized MDCT coefficients for block b This element contains num_bins arithmetic coded quantized MDCT transform coefficients for block b. ETSI ETSI TS 103 190-1 V1.4.1 (2025-07) 95 |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.7.5 SSF helper elements | The following helper elements are derived from the SSF bitstream elements: • start_bin[k] Vector indicating the coefficient index for the start of band k. • end_bin[k] Vector indicating the coefficient index for the end of band k. • num_bins Number of coded spectral coefficients. The following pseudocode shows how to i... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.8 Stereo audio processing | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.8.1 chparam_info - stereo information | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.8.1.1 sap_mode - stereo audio processing mode | The value of this element indicates the stereo audio processing mode as shown in table 114. Table 114: Stereo audio processing mode sap_mode SAP mode 0 No SAP 1 M/S processing in scale factor bands specified by ms_used[g][sfb] 2 M/S processing in all scale factor bands 3 Full SAP |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.8.1.2 ms_used - M/S coding used | If set, this bit indicates that M/S coding is used in scale factor band sfb in group g. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.8.2 sap_data - stereo audio processing data | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.8.2.1 sap_coeff_all - SAP coding all scale factor bands flag | If set, this bit indicates that SAP coding is used in all scale factor bands. If not set, SAP coding is used in scale factor bands specified by sap_coeff_used[g][sfb]. ETSI ETSI TS 103 190-1 V1.4.1 (2025-07) 96 |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.8.2.2 sap_coeff_used - SAP coding used in scale factor band sfb | If set, this bit indicates that SAP coding is used in scale factor band sfb in group g. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.8.2.3 delta_code_time - delta coding in time | This element is used to determine delta coding in time of the alpha_q values. If this element is set and group g > 0, the alpha_q deltas apply to the alpha_q values from group g - 1. If this element is not set or group g = 0, the alpha_q deltas apply to the alpha_q values from scale factor band sfb - 2. See clause 5.3.... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.8.2.4 sap_hcw - Huffman coded alpha_q delta | This element contains a Huffman coded delta value used for the alpha_q[g][sfb] determination. See clause 5.3.1 for details. The same Huffman codebook as for the ASF scale factor deltas is used. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.9 Companding control | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.9.1 sync_flag | The sync_flag indicates the cross-channel synchronization according to table 115. Table 115: sync_flag sync_flag Description 0 Cross-channel synchronization disabled 1 Cross-channel synchronization enabled |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.9.2 b_compand_on | This flag is present per channel ch and indicates whether companding shall be used for a given channel ch individually. The values for b_compand_on are given in table 116. If b_compand_on is set to 0, the given channel ch shall either be unprocessed or the gain value shall be averaged, which is signalled via b_compand_... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.9.3 b_compand_avg | The b_compand_avg flag indicates whether gains shall be averaged and held constant across a frame for all channels with b_compand_on ch == 0 according to table 117. Table 117: b_compand_avg b_compand_avg Description 0 Channels with b_compand_onch == 0 shall be unprocessed 1 Gain values for channels with b_compand_onch ... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10 Advanced spectral extension - A-SPX | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.1 aspx_config - A-SPX configuration | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.1.1 aspx_quant_mode_env | This element is used as an initial value for the variable aspx_qmode_env[ch], which indicates the size of quantization steps used for the encoded signal envelopes, as shown in table 118. See clause 5.7.6.3.5 for details. Table 118: aspx_quant_mode_env[ch] aspx_quant_mode_env Quantization step size 0 1,5 dB 1 3,0 dB |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.1.2 aspx_start_freq - A-SPX start QMF subband | This element is an index into the scale factor subband group table, starting from the first subband and moving upwards in steps of 2 subbands. An aspx_start_freq of 1 hence points to subband 20 for the high-frequency resolution table. See clause 5.7.6.3.1.1 for more details. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.1.3 aspx_stop_freq - A-SPX stop QMF subband | This element is an index into the scale factor subband group table, starting from the last subband and going downwards in steps of 2 subbands. An aspx_stop_freq of 2 hence points to subband 50 in the high-frequency resolution table. See clause 5.7.6.3.1.1 for more details. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.1.4 aspx_master_freq_scale - A-SPX master frequency table scale | The value of this element indicates which of the two static subband group tables is to be used to generate the master subband group table, according to table 119. Table 119: aspx_master_freq_scale aspx_master_freq_scale Meaning 0 Low bit-rate scale factor table (sbg_template_lowres) 1 High bit-rate scale factor table (... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.1.5 aspx_interpolation - A-SPX interpolation used | The value of this element determines how to estimate the energy of envelopes within an A-SPX interval. The estimation is performed by calculating the average of the squared complex subband samples over the time and frequency regions of the QMF time-frequency matrix. Possible values of aspx_interpolation are given in ta... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.1.6 aspx_preflat - A-SPX pre-flattening used | The value of this element indicates whether spectral pre-flattening is used, according to table 121. ETSI ETSI TS 103 190-1 V1.4.1 (2025-07) 98 Table 121: aspx_preflat aspx_preflat Meaning 0 Pre-flattening not used 1 Pre-flattening used |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.1.7 aspx_limiter - A-SPX limiter used | The value of this element indicates whether the limiter is turned on or off for a particular A-SPX interval, according to table 122. Table 122: aspx_limiter aspx_limiter Meaning 0 Limiter off 1 Limiter on |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.1.8 aspx_noise_sbg - A-SPX number of noise subband groups | This element is an input parameter to the function that calculates the number of noise subband groups, as detailed in clause 5.7.6.3.1.3. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.1.9 aspx_num_env_bits_fixfix - A-SPX frame class FIXFIX bit count | This element is an input parameter to the aspx_framing bitstream parsing block described in clause 4.3.10.4. The value of this element indicates whether 1 or 2 bits are used for the transmission of the tmp_num_env bitstream parameter in the FIXFIX interval class. In the FIXFIX interval class the number of signal envelo... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.1.10 aspx_freq_res_mode - A-SPX frequency resolution transmission mode | This element is an input parameter to the aspx_framing bitstream parsing block described in clause 4.3.10.4 and to the function that calculates the A-SPX interval borders, as outlined in clause 5.7.6.3.3.1. Table 124: aspx_freq_res_mode aspx_freq_res_mode Meaning 0 aspx_freq_res is signalled in aspx_framing 1 aspx_freq... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.2 aspx_data_1ch - A-SPX 1-channel data | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.2.1 aspx_xover_subband_offset - A-SPX crossover subband offset | This element is an index into the high-frequency resolution subband group table starting at the first subband and moving upward with a step of 1 subband. ETSI ETSI TS 103 190-1 V1.4.1 (2025-07) 99 |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.3 aspx_data_2ch - A-SPX 2-channel data | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.3.1 aspx_xover_subband_offset - A-SPX crossover subband offset | This 3-bit element has been described in clause 4.3.10.2.1. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.3.2 aspx_balance - A-SPX balance setting | The value of this element indicates whether the envelope and noise scale factors of the two channels have been coded separately or paired, according to table 125. Table 125: aspx_balance aspx_balance Coding of envelope and noise scale factors 0 Separate per-channel coding 1 Paired channel coding |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.4 aspx_framing - A-SPX framing | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.4.1 aspx_int_class - A-SPX interval class | The value of this element indicates the A-SPX interval class used in the bitstream as shown in table 126. Table 126: aspx_int_class aspx_int_class Interval class 0b0 FIXFIX 0b10 FIXVAR 0b110 VARFIX 0b111 VARVAR The information transmitted in the bitstream depends on the indicated interval class, as follows: FIXFIX: • t... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.4.2 tmp_num_env - temporary variable | This element is a temporary variable that is used to calculate the variable aspx_num_env[ch] described in clause 4.3.10.4.11. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.4.3 aspx_freq_res[ch][env] - frequency resolution | The value of this element indicates the frequency resolution, low or high, for each channel and signal envelope, as shown in table 127. Table 127: aspx_freq_res aspx_freq_res Meaning 0 Low-frequency resolution 1 High-frequency resolution |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.4.4 aspx_var_bord_left[ch] - leading VAR interval envelope border | This 2-bit element indicates the position of the leading variable time slot group border for signal envelopes for the interval classes VARFIX and VARVAR. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.4.5 aspx_var_bord_right[ch] - trailing VAR interval envelope border - 2-bits | This element indicates the position of the trailing variable time slot group border for signal envelopes for interval classes FIXVAR and VARVAR. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.4.6 aspx_num_rel_left[ch] - relative envelope border - 1 or 2 bits | This 1- or 2-bit element indicates the number of relative time slot group borders for signal envelopes, starting from aspx_var_bord_left. For all frame interval classes, 2 bits are read if num_aspx_timeslots is greater than 8; otherwise, 1 bit is read. ETSI ETSI TS 103 190-1 V1.4.1 (2025-07) 101 |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.4.7 aspx_num_rel_right[ch] - relative envelope border - 1 or 2 bits | This element indicates the number of relative time slot group borders for signal envelopes, starting from aspx_var_bord_right. For all frame interval classes, 2 bits are read if num_aspx_timeslots is greater than 8; otherwise, 1 bit is read. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.4.8 aspx_rel_bord_left[ch][rel] - leading relative envelope borders | Array of variables indicating the respective offset of each border to the border preceding it, starting left. The position of the first, leftmost border (which has no preceding border) is calculated relative to the position indicated by aspx_var_bord_left[ch], i.e. the first border's position is calculated by adding th... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.4.9 aspx_rel_bord_right[ch][rel] - trailing relative envelope borders | Array of variables indicating the respective offset of each border to the border preceding it, starting right. The position of the first, rightmost border (which has no preceding border) is calculated relative to the position indicated by aspx_var_bord_right[ch], i.e. the first border's position is calculated by subtra... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.4.10 aspx_tsg_ptr[ch] - pointer to envelope border | This variable length element is a pointer to a specific A-SPX time slot group border, used to determine the position of the A-SPX time slot for placing sinusoids and noise envelope borders. See clause 5.7.6.3.3.1 and clause 5.7.6.4.2.1 for more details. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.4.11 A-SPX framing helper variables | The following helper elements are derived from the A-SPX framing elements: • aspx_num_env[ch] Variable indicating the number of signal envelopes per channel. • aspx_num_noise[ch] Variable indicating the number of noise envelopes per channel. In a valid bitstream, the number of signal envelopes in an A-SPX interval sati... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.5 aspx_delta_dir - A-SPX delta coding direction | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.5.1 aspx_sig_delta_dir[ch][env] - A-SPX delta coding for signal envelopes | The value of this element indicates whether the Huffman values for the signal envelopes are coded in time or frequency direction as shown in table 129. ETSI ETSI TS 103 190-1 V1.4.1 (2025-07) 102 Table 129: aspx_sig_delta_dir aspx_sig_delta_dir Meaning 0 Delta coding in frequency direction 1 Delta coding in time direct... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.5.2 aspx_noise_delta_dir[ch][env] - A-SPX delta coding for noise envelopes | The value of this element indicates whether the Huffman values for the noise envelopes are coded in time or frequency direction as shown in table 130. Table 130: aspx_noise_delta_dir aspx_noise_delta_dir Meaning 0 Delta coding in frequency direction 1 Delta coding in time direction 4.3.10.6 aspx_hfgen_iwc_1ch - A-SPX 1... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.6.1 aspx_tna_mode[n] - A-SPX subband tonal to noise ratio adjustment mode | The 2-bit subband tonal to noise ratio adjustment mode signalled for an A-SPX interval is one of the four values shown in table 131. Table 131: aspx_tna_mode aspx_tna_mode Meaning 0 None 1 Light 2 Moderate 3 Heavy The amount of tonal to noise ratio adjustment is proportional to a value calculated based on the values of... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.6.2 aspx_add_harmonic[n] - A-SPX add harmonics | This bit indicates the insertion of a sinusoid in a QMF subband where there was none present in the previous A-SPX interval, according to table 132. Table 132: aspx_add_harmonic aspx_add_harmonic Meaning 0 Do not add sinusoid 1 Add sinusoid |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.6.3 aspx_fic_present - A-SPX frequency interleaved coding present | This bit indicates the presence of frequency interleaved coding, according to table 133. ETSI ETSI TS 103 190-1 V1.4.1 (2025-07) 103 Table 133: aspx_fic_present aspx_fic_present Meaning 0 Frequency interleaved coding not present 1 Frequency interleaved coding present 4.3.10.6.4 aspx_fic_used_in_sfb[n] - A-SPX frequency... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.6.5 aspx_tic_present - A-SPX time interleaved coding present | The value of this element indicates whether time interleaved coding is present, as shown in table 135. Table 135: aspx_tic_present aspx_tic_present Meaning 0 Time interleaved coding not present 1 Time interleaved coding present |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.6.6 aspx_tic_used_in_slot[n] - A-SPX time interleaved coding used in slot | The value of this element indicates whether time interleaved coding is used in an adjacent pair of QMF slots, as shown in table 136. Table 136: aspx_tic_used_in_slot aspx_tic_used_in_slot Meaning 0 Time interleaved coding not used in current slot pair 1 Time interleaved coding used in current slot pair |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.6.7 aspx_ah_present - A-SPX add harmonics present | If set, this bit indicates that aspx_add_harmonic[n] data shall follow in the bitstream. 4.3.10.7 aspx_hfgen_iwc_2ch - A-SPX 2-channel HF generation and interleaved waveform coding |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.7.1 aspx_tna_mode[ch][n] - A-SPX subband tonal to noise adjustment mode | This element is described in clause 4.3.10.6.1, and takes an additional channel index. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.7.2 aspx_add_harmonic[ch][n] - A-SPX add harmonics | This element is described in clause 4.3.10.6.2, and takes an additional channel index. ETSI ETSI TS 103 190-1 V1.4.1 (2025-07) 104 |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.7.3 aspx_fic_present - A-SPX frequency interleaved coding present - 1 bit | This element is described in clause 4.3.10.6.3. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.7.4 aspx_fic_left - A-SPX frequency interleaved coding in left channel | The value of this element indicates whether frequency interleaved coding is present in the left channel, as shown in table 137. Table 137: aspx_fic_left aspx_fic_left Meaning 0 Frequency interleaved coding not present in left channel 1 Frequency interleaved coding present in left channel |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.7.5 aspx_fic_right - A-SPX frequency interleaved coding in right channel | The value of this element indicates whether frequency interleaved coding is present in the right channel, according to table 138. Table 138: aspx_fic_right aspx_fic_right Meaning 0 Frequency interleaved coding not present in right channel 1 Frequency interleaved coding present in right channel 4.3.10.7.6 aspx_fic_used_... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.7.7 aspx_tic_present - A-SPX time interleaved coding present | This element is described in clause 4.3.10.6.5. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.7.8 aspx_tic_copy - A-SPX time interleaved coding copy data | The value of this element indicates whether the time interleaved data is copied to both left and right channels, as shown in table 139. Table 139: aspx_tic_copy aspx_tic_copy Meaning 0 Time interleaved coding not copied 1 Time interleaved coding copied |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.7.9 aspx_tic_left - A-SPX time interleaved coding in left channel | The value of this element indicates whether time interleaved coding is present in the left channel, as shown in table 140. Table 140: aspx_tic_left aspx_tic_left Meaning 0 Time interleaved coding not present in left channel 1 Time interleaved coding present in left channel ETSI ETSI TS 103 190-1 V1.4.1 (2025-07) 105 |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.7.10 aspx_tic_right - A-SPX time interleaved coding in right channel | The value of this element indicates whether time interleaved coding is present in the right channel, as shown in table 141. Table 141: aspx_tic_right aspx_tic_right Meaning 0 Time interleaved coding not present in right channel 1 Time interleaved coding present in right channel |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.7.11 aspx_tic_used_in_slot[n] - A-SPX time interleaved coding used in slots | This element is described in clause 4.3.10.6.6. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.7.12 aspx_ah_left - A-SPX add harmonics in left channel | If set, this bit indicates that aspx_add_harmonic[0][n] data shall follow in the bitstream. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.7.13 aspx_ah_right - A-SPX add harmonics in right channel | If set, this bit indicates that aspx_add_harmonic[1][n] data shall follow in the bitstream. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.8 Functions for Huffman coding | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.8.0 aspx_ec_data - A-SPX Huffman data | This function returns the Huffman decoded signal and noise envelope scale factors from the bitstream. It takes the following arguments: • data_type Variable indicating the whether to decode a signal or a noise envelope. • num_env Variable indicating the number of envelopes to decode. • freq_res Variable indicating the ... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.8.1 aspx_huff_data - Huffman decoding for A-SPX values | This function returns an array of scale factors of a decoded signal or noise envelope. It takes the following arguments: • data_type Variable indicating the whether to decode a signal or a noise envelope. • sbg Variable indicating the number of subband groups in the current envelope. ETSI ETSI TS 103 190-1 V1.4.1 (2025... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.8.2 aspx_hcw - A-SPX Huffman code word | This element indicates the Huffman code word used for Huffman decoding. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.10.8.3 huff_decode_diff(hcb, hcw) - Huffman decoding for differences | This function takes a Huffman codebook table and a Huffman codeword as input and returns the index of the Huffman codeword in the Huffman codebook table subtracted by the Huffman codebook offset cb_off, which is specified together with the Huffman codebook table. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.11 Advanced coupling - A-CPL |
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