№ files_lp_4_process_2_84131
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Technical report detailing the methodology and results of testing the ULBC audio codec under different noise conditions, including clean, stationary, non-stationary, and noise-suppressed speech, with reference to EVS and ITU-T testing standards.
Year:
2024
Region / City:
Global
Topic:
Audio Codec Evaluation
Document Type:
Technical Report
Organization:
Apple Inc., Lenovo
Author:
Collaborative work of Apple and Lenovo engineers
Target Audience:
Audio codec developers, telecommunication engineers
Test Standards:
EVS codec testing TR 26.952, ITU-T P.800 DCR
Testing Scenarios:
Clean speech, stationary noise, non-stationary noise, NS processed speech
Purpose:
Evaluate robustness of ULBC codec under various noise conditions
Related Documents:
TR 26.940 Clause 9, TR26.989 v19.0.0
Testing Metrics:
SNR levels, subjective speech quality ratings
Price: 8 / 10 USD
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The product description is provided for reference. Actual content and formatting may differ slightly.
Year:
2014
Region / City:
Worldwide
Topic:
Videoconferencing equipment setup
Document Type:
User Guide
Organization / Institution:
Polycom
Author:
Polycom
Target Audience:
End users, system integrators, and technicians in videoconferencing environments
Period of validity:
Not specified
Approval Date:
December 2014
Modification Date:
Not specified
Year:
2024
Region / city:
Jeju, KR
Topic:
Codec
Document type:
Change Request
Organ / institution:
3GPP
Author:
Dolby Sweden AB, Ericsson LM, Fraunhofer IIS, Huawei Technologies Co Ltd., Nokia Corporation, NTT, Orange, Panasonic Holdings Corporation, Philips International B.V., Qualcomm Incorporated, VoiceAge Corporation
Target audience:
Technical experts
Effective period:
2024-05-14
Approval date:
2024-05-14
Modification date:
Not specified
Note:
Year
Topic:
Audio Processing, Noise Suppression, Codec Testing
Document Type:
Technical Report
Organization:
ITU-T
Author:
Apple Inc., Lenovo
Target Audience:
Audio engineers, codec developers, telecom professionals
Contextual description:
Technical report on ULBC codec testing in background noise, evaluating performance and challenges of noise suppression algorithms in various environments and conditions.
Year:
2025–2026
Region / City:
Global / 3GPP Collaboration
Subject:
Ultra Low Bitrate Speech Codec (ULBC) for GEO Satellite Voice Services
Document Type:
Technical Report / Working Document
Organization:
3GPP SA4 Working Group
Author:
FS_ULBC Rapporteur Team
Target Audience:
Telecom engineers, standardization participants
Revision History:
Detailed per version from 0.1.0 to 0.6.0 including clause updates, simulation models, and design considerations
Applicable Standards:
3GPP TR 26.940, TS 26.132, TR 38.811, TR 38.821, TS 23.700-19
Scope:
ULBC design constraints, simulation methodologies, performance requirements, interoperability with IMS voice over GEO NTN
Methodology:
Clause-based updates, simulation results, reference codecs analysis, complexity and memory evaluation, design constraints validation
Related Contributions:
SP-250378, Tdoc S4-251390, S4aA250058, S4aA250259, S4aA250069, S2-2509293
Implementation Period:
Drafting and updates between May 2025 and February 2026
Additional Notes:
Excludes NB-IoT impacts; coordinates with multiple 3GPP groups
Year:
2026
Location:
Goa, India
Topic:
Ultra Low Bitrate Speech Codecs and NB-IoT uplink evaluation
Document type:
Technical contribution / discussion document
Organization:
3GPP TSG SA WG4
Authors:
vivo, Samsung, Spreadtrum, MediaTek Inc.
Target audience:
3GPP working group members and telecom engineers
Agenda item:
7.8
Related specification:
3GPP TR 26.940 v0.4.0
Channel models:
50-degree and 10-degree elevation NTN-TDL-C
Codec bitrate range:
0.4–3 kbps
UE power levels analyzed:
23 dBm, 26 dBm, 31 dBm
Bundling periods considered:
80 ms, 160 ms, 320 ms
Multiplexing methods:
TDM and FDM
Reference systems:
Tiantong GEO NB-IoT system
Year:
2025
Region / City:
Online
Topic:
AI Codec Complexity, Mobile Devices
Document Type:
Discussion Paper
Organization / Institution:
3GPP TSG-SA WG4
Author:
vivo
Target Audience:
Industry professionals, engineers, researchers
Period of Validity:
N/A
Approval Date:
N/A
Date of Changes:
N/A
Year:
2025
Region / City:
Fukuoka, Japan
Topic:
Speech Codec Testing
Document Type:
Discussion and Agreement
Organization:
3GPP SA4
Author:
Dolby Laboratories Inc., Novamint
Target Audience:
Technical experts in speech codecs
Effective Period:
May 2025
Approval Date:
Not specified
Modification Date:
Not specified
Year:
2025
Region / City:
Online
Topic:
Codec Design, AI, Speech Processing
Document Type:
Discussion Paper
Organization / Institution:
Dolby Laboratories Inc., Nokia, Xiaomi Technology, Orange
Author:
Not specified
Target Audience:
3GPP working groups, codec developers
Period of Validity:
2025
Approval Date:
Not specified
Date of Changes:
Not specified
Note:
Context description
Year:
2025
Region / City:
Japan, Fukuoka
Topic:
Ultra-low bit rate speech codecs, Test methodologies
Document Type:
Discussion and Agreement
Organization:
3GPP SA4
Author:
Dolby Laboratories Inc., Novamint
Target Audience:
Engineers and researchers in speech coding
Period of Validity:
N/A
Approval Date:
N/A
Date of Changes:
N/A
Year:
2025
Region / City:
Online
Topic:
Ultra Low Bitrate Speech Codec (ULBC), GEO channel characteristics
Document Type:
Liaison Statement (LS)
Organization / Institution:
3GPP SA4
Author:
Liangping Ma
Target Audience:
RAN WG1, RAN WG2, RAN WG4, SA WG2, CT WG1, satellite companies
Period of Validity:
July 18-25, 2025
Approval Date:
N/A
Date of Modifications:
N/A
Next Meeting Date:
July 21-25, 2025; November 11-17, 2025
Contact Person:
Liangping Ma
Contact Email:
lpma AT qti DOT qualcomm DOT com
Attachments:
S4aA2500691
Description:
Liaison statement detailing assumptions for the simulation of Ultra Low Bitrate Speech Codec and requests for feedback on simulation parameters and service-related dependencies from various working groups and satellite companies.
Year:
2026
Organizations:
Dolby Laboratories Inc., Nokia, Novamint
Document type:
Technical discussion paper
Intended for:
Discussion and Agreement
Agenda item:
7.8
Topic:
UE capability variability and ULBC system design
Target audience:
Technical experts in NB‑IoT and NTN systems
References:
Tdoc S4aA260006, TR 26.940
Key concepts:
UE transmit power classes, antenna configurations, multi-tone transmission, capability-aware scheduling, ULBC bitrate differentiation
Note:
Year
Topic:
Audio Processing, Noise Suppression, Codec Testing
Document Type:
Technical Report
Organization:
ITU-T
Author:
Apple Inc., Lenovo
Target Audience:
Audio engineers, codec developers, telecom professionals
Contextual description:
Technical report on ULBC codec testing in background noise, evaluating performance and challenges of noise suppression algorithms in various environments and conditions.
Year:
2024
Region / City:
Not specified
Subject:
Evaluation of complexity metrics for ULBC
Document type:
Technical report
Organization:
ITU-T
Author:
Not specified
Target audience:
Researchers and engineers working on codec complexity
Period of validity:
Not specified
Approval date:
Not specified
Date of last changes:
Not specified
Year:
2022
Organization:
Apple Inc.
Document type:
Technical specification
Target system:
IMS voice service over GEO and NGSO
Codec:
ULBC
Reference codecs:
AMR, AMR-WB, EVS AMR-WB-IO, EVS-WB/SWB
Bitrate range:
1–3 kbps
Performance conditions:
Clean speech, noisy speech, packet loss
Agenda item:
7.8
Purpose:
Discussion and agreement on minimum performance requirements
Year:
2026
Location:
Goa, India
Topic:
Ultra Low Bitrate Speech Codecs and NB-IoT uplink evaluation
Document type:
Technical contribution / discussion document
Organization:
3GPP TSG SA WG4
Authors:
vivo, Samsung, Spreadtrum, MediaTek Inc.
Target audience:
3GPP working group members and telecom engineers
Agenda item:
7.8
Related specification:
3GPP TR 26.940 v0.4.0
Channel models:
50-degree and 10-degree elevation NTN-TDL-C
Codec bitrate range:
0.4–3 kbps
UE power levels analyzed:
23 dBm, 26 dBm, 31 dBm
Bundling periods considered:
80 ms, 160 ms, 320 ms
Multiplexing methods:
TDM and FDM
Reference systems:
Tiantong GEO NB-IoT system
Year:
2026
Region / City:
Goa, India
Topic:
Complexity estimation for ULBC
Document Type:
Technical specification
Organization / Institution:
3GPP
Author:
Fraunhofer IIS
Target Audience:
Researchers, engineers, codec developers
Period of Validity:
Ongoing
Approval Date:
9-13 February 2026
Revision Date:
None
Year:
2024
Region / Organization:
3GPP, Dolby Laboratories Inc., China Mobile, Qualcomm, Huawei, Xiaomi
Topic:
Ultra Low Bitrate Speech Codec evaluation and standardization
Document Type:
Technical report / study document
Authors:
T. Muller et al., 3GPP SA4 contributors
Target Audience:
Codec developers, standardization engineers, telecom researchers
Period of Validity:
Ongoing research and standardization as of 2024
Approval Date:
SA#107
References:
TR 26.940 v0.5.1, 3GPP SP-250378, SP-250635, S4-260144, S4-251814
Note:
Year
Project Type:
Equipment purchase
Environmental Document:
PM (CATEX)
FHWA Funds:
No
Federal Permit:
No
Project Location:
St. Paul, MN
Road Type:
TH, CSAH, County Road, Township Road, MSAS, City Street, Trail
Description:
Equipment purchase for recreational trail program, with environmental review for noise and endangered species.
Year:
2020
Region / City:
Washington State
Theme:
Traffic Noise Analysis and Mitigation
Document Type:
Policy and Procedures
Agency:
Washington State Department of Transportation (WSDOT)
Author:
Washington State Department of Transportation (WSDOT)
Target Audience:
State and local transportation agencies, environmental planners, contractors
Period of Application:
Ongoing
Approval Date:
March 2020
Revision Date:
Not specified