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 | 4.3.11.1 acpl_config_1ch - A-CPL 1-channel configuration | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.11.1.1 acpl_1ch_mode - A-CPL tool 1-channel mode | This helper element indicates the Advanced CouPLing (A-CPL) tool 1-channel mode as shown in table 142. Table 142: acpl_1ch_mode acpl_1ch_mode Meaning 0 Full 1 Partial |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.11.1.2 acpl_num_param_bands_id - A-CPL number of parameter bands | The value of this element indicates the number of parameter bands, as shown in table 143. A parameter band is a grouping of QMF subbands. Advanced coupling parameters are transmitted per parameter band. Table 143: acpl_num_param_bands_id acpl_num_param_bands_id acpl_num_param_bands 0 15 1 12 2 9 3 7 |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.11.1.3 acpl_quant_mode - A-CPL quantization mode | The value of this element indicates whether coarse or fine quantization is used. Table 144: acpl_quant_mode acpl_quant_mode Meaning 0 Fine 1 Coarse ETSI ETSI TS 103 190-1 V1.4.1 (2025-07) 107 |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.11.1.4 acpl_qmf_band_minus1 - A-CPL QMF band minus 1 | Adding a value of 1 to this 3-bit code determines the value of the helper variable acpl_qmf_band. acpl_qmf_band indicates a QMF subband below which the signal is mid-side coded, and above or at which, the signal is coded using advanced coupling. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.11.2 acpl_config_2ch - A-CPL 2-channel configuration | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.11.2.1 acpl_num_param_bands_id - A-CPL number of parameter bands | This 2-bit bitstream element is described in clause 4.3.11.1.2. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.11.2.2 acpl_quant_mode_0 - A-CPL quantization mode 0 | This bit indicates coarse or fine quantization for acpl_alpha and acpl_beta coefficients. The possible values of this bitstream element are shown in clause 4.3.11.1.3. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.11.2.3 acpl_quant _mode_1 - A-CPL quantization mode 1 | This bit indicates coarse or fine quantization for acpl_gamma coefficients. The possible values of this bitstream element are shown in clause 4.3.11.1.3. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.11.3 acpl_data_1ch - A-CPL 1-channel data | The acpl_alpha1 and acpl_beta1 identifiers are used for Huffman table dequantization. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.11.4 acpl_data_2ch - A-CPL 2-channel data | The identifiers used for Huffman table dequantization are: acpl_alpha1, acpl_alpha2, acpl_beta1, acpl_beta2, acpl_beta3, acpl_gamma1, acpl_gamma2, acpl_gamma3, acpl_gamma4, acpl_gamma5, and acpl_gamma6. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.11.5 acpl_framing_data - A-CPL framing data | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.11.5.1 acpl_interpolation_type - A-CPL interpolation type | This bit indicates the type of interpolation used. Table 145: acpl_interpolation_type acpl_interpolation_type Meaning 0 Smooth A-CPL interpolation 1 Steep A-CPL interpolation |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.11.5.2 acpl_num_param_sets_cod - A-CPL number of parameter sets per frame | This bit indicates the value acpl_num_param_sets, which describes how many parameter sets per frame are transmitted in the bitstream. Table 146: acpl_num_param_sets acpl_num_param_sets_cod acpl_num_param_sets 0 1 1 2 ETSI ETSI TS 103 190-1 V1.4.1 (2025-07) 108 |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.11.5.3 acpl_param_timeslot - A-CPL parameter change at QMF time slot | When steep interpolation is used, this 5-bit element indicates the QMF time slot (0 - 31) at which the parameter set values change. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.11.6 acpl_huff_data - A-CPL Huffman data | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.11.6.1 acpl_hcw - A-CPL Huffman code word | This variable length element indicates the Huffman code word used for Huffman decoding. The following pseudocode describes how to choose the correct Huffman table for decoding the bitstream elements. Pseudocode 8 get_acpl_hcb(data_type, quant_mode, hcb_type) { // data_type = {ALPHA, BETA, BETA3, GAMMA} // quant_mode = ... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12 Basic and extended metadata | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.1 metadata - metadata | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.1.1 tools_metadata_size_value - size of tools metadata | This element generates tools_metadata_size, indicating the size in bits of the metadata related to the Dynamic Range Control (DRC) and dialogue enhancement tools. It is a 7-bit element that can be extended by variable_bits(). |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.1.2 b_more_bits - more bits flag | This Boolean indicates whether additional variable_bits is present, to be used for the tools_metadata_size determination. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.1.3 b_emdf_payloads_substream - EMDF payloads substream flag | This Boolean indicates whether an emdf_payloads_substream() element is present. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2 basic_metadata - basic metadata | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.1 dialnorm_bits - input reference level | This 7-bit element specifies the dialnorm in Decibels Referenced To Full-Scale Digital (dBFS), in steps of ¼ dBFS. The dialnorm value indicates the input reference level: Dialnorm = − × dialnorm_bitsdBFS |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.2 b_more_basic_metadata - more basic metadata flag | This Boolean indicates whether more basic metadata is available. ETSI ETSI TS 103 190-1 V1.4.1 (2025-07) 109 |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.3 b_further_loudness_info - additional loudness information flag | This Boolean indicates whether additional loudness information is present in a further_loudness_info() element. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.4 b_prev_dmx_info - previous downmix information flag | This Boolean indicates whether downmix information of the signal before encoding is present. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.5 pre_dmixtyp_2ch - previous downmix to 2 channels type | This 3-bit elementindicates what downmix was performed before encoding into two channels as shown in table 147. Table 147: pre_dmixtyp_2ch pre_dmixtyp_2ch Downmix equation 0 Unknown 1 Lo = L + (-3 dB) × C + (-3 dB) × Ls Ro = R + (-3 dB) × C + (-3 dB) × Rs 2 Lt = L + (-3 dB) × C - (-3 dB) × Ls - (-3 dB) × Rs Rt = R + (-... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.6 phase90_info_2ch - phase 90 in 2 channels info | This 2-bit element indicates whether a 90° phase filtering was done before downmixing and encoding into 2 channels as shown in table 148. Table 148: phase90_info_2ch phase90_info_2ch Meaning 0 Not indicated 1 Reserved 2 Surrounds have undergone a 90° phase shift before downmixing and encoding 3 Surrounds have not under... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.7 b_dmx_coeff - downmix coefficients present flag | This Boolean indicates whether downmix coefficients are present. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.8 loro_centre_mixgain - LoRo Centre mix gain | This 3-bit element indicates the gain to be used for LoRo downmixing the Centre channel of a five-channel or seven- channel signal into two channels as shown in table 149. Table 149: {loro,ltrt}_centre_mixgain loro_centre_mixgain ltrt_centre_mixgain LoRo / LtRt downmix gain [linear] downmix gain [dB] 000 1,414 +3,0 dB ... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.9 loro_surround_mixgain - LoRo surround mix gain | This 3-bit element indicates the gain to be used for LoRo downmixing the surround channels of a five-channel or seven- channel channel signal into two channels as shown in table 149a. Table 149a: {loro,ltrt}_surround_mixgain loro_surround_mixgain ltrt_surround_mixgain LoRo / LtRt downmix gain [linear] downmix gain [dB]... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.10 b_loro_dmx_loud_corr - LoRo downmix loudness correction flag | This Boolean indicates whether LoRo downmix loudness correction data is present. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.11 loro_dmx_loud_corr - LoRo downmix loudness correction | This 5-bit element indicates a LoRo downmix loudness correction. This correction factor is used to calibrate downmix loudness to the original program loudness: Loro_corr_gain = loro_dmx_loud_corr dB A value of 31 is reserved, and if present, it indicates a gain of 0 [dB]. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.12 b_ltrt_mixinfo - LtRt downmix information present | This Boolean indicates whether LtRt downmix coefficients are present. Otherwise, the LtRt downmix coefficients are the same as the LoRo downmix coefficients. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.13 ltrt_centre_mixgain - LtRt Centre mix gain | This 3-bit element indicates the gain to be used for LtRt downmixing the Centre channel of a five-channel or seven- channel signal into two channels as shown in table 149. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.14 ltrt_surround_mixgain - LtRt surround mix gain | This 3-bit element indicates the gain to be used for LtRt downmixing the surround channels of a five-channel or seven- channel signal into two channels as shown in table 149. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.15 b_ltrt_dmx_loud_corr - LtRt downmix loudness correction flag | This Boolean indicates whether LtRt downmix loudness correction data is present. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.16 ltrt_dmx_loud_corr - LtRt downmix loudness correction | This 5-bit element indicates a LtRt downmix loudness correction. This correction factor is used to calibrate downmix loudness to the original program loudness: Ltrt_corr_gain = ltrt_dmx_loud_corr dB A value of 31 is reserved, and if present, it indicates a gain of 0 [dB]. ETSI ETSI TS 103 190-1 V1.4.1 (2025-07) ... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.17 b_lfe_mixinfo - LFE downmix information present | This Boolean indicates whether an LFE mix gain is present. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.18 lfe_mixgain - LFE mix gain | This 5-bit element indicates the gain lfe_mg to be used for mixing the LFE channel to L and R when downmixing from 5.1 into two channels: Lfe_mg = 5,5 −lfe_mixgain dB The lfe_mg range is -25,5 dB … +5,5 dB. NOTE: After startup or after a detected splice, a value of -∞ dB may be used for lfe_mg until an AC-4 frame wi... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.19 preferred_dmx_method - preferred downmix method | This 2-bit element indicates the preferred way of downmixing from five channels to two channels as shown in table 150. Table 150: preferred_dmx_method preferred_dmx_method Used coefficients 0 Not indicated 1 loro 2 ltrt 3 ltrt |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.20 b_predmxtyp_5ch - previous downmix to five channels flag | This Boolean indicates whether downmix information of the signal before encoding is present. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.21 pre_dmixtyp_5ch - previous downmix to five channels type | This 3-bit element indicates what downmix was performed before encoding into five channels as shown in table 151. ETSI ETSI TS 103 190-1 V1.4.1 (2025-07) 112 Table 151: pre_dmixtyp_5ch pre_dmixtyp_5ch Downmix equation 0 L = L R = R C = C LFE = LFE Ls' = Ls + (-3 dB) × Cs Rs' = Rs + (-3 dB) × Cs 1 L = L R = R C = C LFE ... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.22 b_preupmixtyp_5ch - previous upmix to five channels flag | This Boolean indicates whether upmix information of the signal before encoding is present. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.23 pre_upmixtyp_5ch - previous upmix to five channels type | This 4-bit element indicates what upmix from 2 channels was performed before encoding into 5 channels as shown in table 152. Table 152: pre_upmixtyp_5ch pre_upmixtyp_5ch Upmix type 0 Dolby® Pro Logic® 1 Dolby® Pro Logic® II Movie Mode 2 Dolby® Pro Logic® II Music Mode 3 Dolby® Professional Upmixer 4…15 Reserved |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.24 b_upmixtyp_7ch - previous upmix to seven channels flag | This Boolean indicates whether upmix information of the signal before encoding is present. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.25 pre_upmixtyp_3_4 - previous upmix to seven channels type | This 2-bit elementindicates what upmix from five channels was performed before encoding into seven channels (3/4/0) as shown in table 153. ETSI ETSI TS 103 190-1 V1.4.1 (2025-07) 113 Table 153: pre_upmixtyp_3_4 pre_upmixtyp_3_4 Upmix type 0 Dolby® Pro Logic® IIx Movie Mode 1 Dolby® Pro Logic® IIx Music Mode 2…3 Reserve... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.26 pre_upmixtyp_3_2_2 - previous upmix to seven channels type | This single-bit element indicates what upmix from five channels was performed before encoding into seven channels (3/2/2) as shown in table 154. Table 154: pre_upmixtyp_3_2_2 pre_upmixtyp_3_2_2 Upmix type 0 Dolby® Pro Logic® IIz Height 1 Reserved |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.27 phase90_info_mc - phase 90 in multi-channel information | This 2-bit element indicates whether a 90° phase filtering was done before encoding as shown in table 155. Table 155: phase90_info_mc phase90_info_mc Semantics 0 Not indicated 1 Surrounds have undergone a 90° phase shift before encoding 2 Surrounds have not undergone a 90° phase shift before encoding 3 Reserved |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.28 b_surround_attenuation_known - surround attenuation known flag | This bit should be ignored by the decoder. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.29 b_lfe_attenuation_known - LFE attenuation known flag | This bit should be ignored by the decoder. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.30 b_dc_blocking - DC blocking flag | This Boolean indicates that DC blocking information is present. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.2.31 dc_block_on - DC blocking | This bit, if set, indicates that the signal was DC filtered before encoding. If this bit is not set, the signal was not DC filtered before encoding. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3 further_loudness_info - additional loudness information | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.1 loudness_version - loudness version | This element indicates the version of the loudness payload. It is a 2-bit element that is extendable via extended_loudness_version. For loudness data payloads that conform to the present document, the loudness_version field shall be set to 00, and thus the extended_loudness_version field shall not be present in the pay... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.2 extended_loudness_version - loudness version extension | This 4-bit element, which is only present if loudness_version = 3, holds an extension to the loudness_version. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.3 loud_prac_type - loudness practice type | This 4-bit element indicates which recommended practice for programme loudness measurement has been followed to generate the programme loudness of the current audio substream as shown in table 156. Table 156: loud_prac_type loud_prac_type Semantics 0000 Loudness regulation compliance not indicated 0001 Programme loudne... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.4 b_loudcorr_dialgate - loudness correction dialogue gating flag | This Boolean indicates whether the loudness of the programme has been corrected using dialogue gating. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.5 dialgate_prac_type - dialogue gating practice type | This 3-bit element indicates which dialogue gating method has been utilized for loudness correction with current audio substream as shown in table 157. The dialgate_prac_type parameter is only indicated if the b_loudcorr_dialgate parameter preceding in the bitstream is true. Table 157: Dialogue gating method dialgate_p... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.6 b_loudcorr_type - loudness correction type | This Boolean indicates the type of loudness correction applied to the programme. In this case, the loudness has been corrected using a real-time loudness measurement. Otherwise, the loudness has been corrected with an infinite look- ahead (file-based) loudness correction process. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.7 b_loudrelgat - loudness value relative gated flag | This Boolean indicates whether a loudrelgat field is present in the payload. ETSI ETSI TS 103 190-1 V1.4.1 (2025-07) 115 |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.8 loudrelgat - loudness value relative gated | This 11-bit element indicates the integrated loudness of the audio programme, measured according to Recommendation ITU-R BS.1770-3 [i.4] and without any gain adjustments due to dialogue normalization and dynamic range compression being applied. The loudrelgat parameter is encoded according to: Loudrelgat = loudness_val... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.9 b_loudspchgat - loudness value speech gated flag | This Boolean indicates whether a loudspchgat and a dialgate_prac_type field are present in the payload. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.10 loudspchgat - loudness value speech gated | This 11-bit element indicates the integrated dialogue-based loudness of the entire audio programme, measured according to formula (2) of Recommendation ITU-R BS.1770-3 [i.4] with dialogue gating. The loudspchgat value represents the dialogue-based loudness without any gain adjustments due to dialogue normalization and ... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.11 dialgate_prac_type - dialogue gating practice type | This 3-bit element indicates which dialogue gating method has been utilized to generate the loudspchgat parameter value for the current audio substream as shown in table 157. The dialgate_prac_type parameter is only indicated if the b_loudspchgat parameter preceding in the bitstream is true. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.12 b_loudstrm3s - loudness values short term 3s flag | This Boolean indicates whether a loudstrm3s field is present in the payload. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.13 loudstrm3s - loudness values short term 3s | This 11-bit element indicates the loudness of the preceding 3 seconds of the audio programme, measured according to Recommendation ITU-R BS.1771-1 [i.5] and without any gain adjustments due to dialogue normalization and dynamic range compression being applied. The loudstrm3s parameter is encoded according to: Loudstrm3... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.14 b_max_loudstrm3s - maximum loudness value short term 3s flag | This Boolean indicates whether a max_loudstrm3s field follows in the bitstream. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.15 max_loudstrm3s - maximum loudness value short term 3s | This 11-bit element indicates the maximum short-term loudness of the audio programme without any gain adjustments due to dialogue normalization and dynamic range compression being applied, measured according to Recommendation ITU-R BS.1771-1 [i.5]. The max_loudstrm3s parameter is encoded according to: max_loudstrm3s = ... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.16 b_truepk - true peak flag | This Boolean indicates whether a truepk field follows in the bitstream. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.17 truepk - true peak | This 11-bit element indicates the true peak sample value of the programme measured since the previous value was sent in the bitstream. The truepk value is measured according to Annex 2 of Recommendation ITU-R BS.1770-3 [i.4]. The truepk parameter is encoded according to: truepk = true_peak_value × 10 + 1 2 + 1 024 an... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.18 b_max_truepk - maximum true peak flag | This Boolean indicates whether a max_truepk field follows in the bitstream. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.19 max_truepk - maximum true peak | This 11-bit element indicates the maximum true peak sample value of the programme measured according to Annex 2 of Recommendation ITU-R BS.1770-3 [i.4]. The max_truepk parameter is encoded according to: max_truepk = max_true_peak_value × 10 + 1 2 + 1 024 and decoded according to: max __ _ = max _truepk −1 02... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.20 b_prgmbndy - programme boundary flag | This Boolean indicates whether programme boundary data is present in the payload. ETSI ETSI TS 103 190-1 V1.4.1 (2025-07) 117 |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.21 prgmbndy_bit - programme boundary bit | This bit, which can be present multiple times, is used for the determination of the programme boundary value prgmbndy. The value of the variable prgmbndy shall be equal to the number of frames between the current frame and the frame that contains the boundary between two different programmes. This data may be used to d... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.22 b_end_or_start - programme boundary end or start flag | This Boolean indicates whether the value of prgmbndy represents the number of frames between the current and the upcoming one. Otherwise, prgmbndy represents the number of frames between the current and the previous one. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.23 b_prgmbndy_offset - programme boundary offset flag | This Boolean indicates whether a prgmbndy_offset field is present in the payload. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.24 prgmbndy_offset - programme boundary offset | This 11-bit element indicates the offset in audio samples from the first sample of the frame indicated by the prgmbndy variable to the actual audio sample in that frame that corresponds to the programme boundary. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.25 b_lra - loudness range flag | This Boolean indicates whether an lra field follows in the bitstream. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.26 lra - loudness range | This 10-bit element indicates the loudness range of the programme as specified in EBU Tech 3342 [i.11]. The lra parameter is encoded according to: lra = loudnessrange × 10 + and decoded according to: = lra LU |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.27 lra_prac_type - loudness range measurement practice type | This 3-bit element field indicates which method has been utilized to compute the loudness range with the current audio substream as shown in table 158. Table 158: lra_prac_type lra_prac_type Semantics 000 Loudness Range as per EBU Tech 3342 [i.11] v1 001 Loudness Range as per EBU Tech 3342 [i.11] v2 010…111 Reserved |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.28 b_loudmntry - momentary loudness flag | This Boolean indicates whether a loudmntry field follows in the bitstream. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.29 loudmntry - momentary loudness | This 11-bit element indicates the momentary loudness of the programme without any gain adjustments due to dialogue normalization and dynamic range compression applied, measured since the previous value was sent in the bitstream. The loudmntry measurement is specified in Recommendation ITU-R BS.1771-1 [i.5] (or EBU Tech... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.30 b_max_loudmntry - maximum momentary loudness flag | This Boolean indicates whether a max_loudmntry field follows in the bitstream. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.31 max_loudmntry - maximum momentary loudness | This 11-bit element indicates the maximum momentary loudness of the programme measured as specified in Recommendation ITU-R BS.1771-1 [i.5] (or EBU Tech 3341 [i.12]) without any gain adjustments due to dialnorm and dynamic range compression applied. The max_loudmntry parameter is encoded according to: max_loudmntry = ... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.32 b_extension - extension flag | This Boolean indicates whether further loudness extension data is present. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.33 e_bits_size - extension size | This 5-bit element, potentially extended with variable_bits(), indicates the size of the extension_bits field in bits. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.3.34 extension_bits - extension bits | This field of size e_bits_size holds extension bits. The content of these bits is not defined in the present document. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.4 extended_metadata | |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.4.1 b_associated - associated audio substream flag - parameter | This Boolean indicates whether the substream is associated audio. In this case, content_classifier {0b101; 0b011; 0b010}, or presentation_config {2; 3; 4}. Otherwise, presentation_config and content_classifier are set to other values. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.4.2 b_dialog - dialogue substream flag - parameter | This Boolean indicates whether the substream is dialogue. In this case, at least one of several specific cases that are defined in table 158a apply. Otherwise, presentation_config and content_classifier are set to other values. ETSI ETSI TS 103 190-1 V1.4.1 (2025-07) 119 Table 158a: b_dialog presentation_config content... |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.4.3 b_scale_main - scale main flag | This Boolean indicates whether scale main information is present. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.4.4 scale_main - scale main | This 8-bit element represents a negative gain of 0 dB (0x00) to 76,2 dB (0xfe) in 0,3 dB steps. A value of 0xff indicates a full mute. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.4.5 b_scale_main_centre - scale main centre flag | This Boolean indicates whether scale main centre information is present. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.4.6 scale_main_centre - scale main centre | This 8-bit element indicates a gain of 0 dB (0x00) to -76,2 dB (0xfe) in 0,3 dB steps. A value of 0xff indicates -∞ dB. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.4.7 b_scale_main_front - scale main front flag | This Boolean indicates whether scale main front information is present. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.4.8 scale_main_front - scale main front | This 8-bit element represents a negative gain of 0 dB (0x00) to 76,2 dB (0xfe) in 0,3 dB steps. A value of 0xff indicates a full mute. |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.4.9 pan_associated - associated audio pan data - 8 bits | This 8-bit value represents an angle from 0 (0x00) to 358,5 (0xef) degrees in 1,5 degree steps. The values 0xf0…0xff shall not be used. The angle is to be interpreted as 0 pointing in the front direction, and increases in the clockwise direction, for example, standard Right speaker is at +30 degree (0x14). |
79462c15429e4b02e874d57a1faa88a5 | 103 190-1 | 4.3.12.4.10 b_dialog_max_gain - dialog maximum gain flag | This Boolean indicates whether a dialog_max_gain element is present and shall follow in the bitstream. |
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