№ files_lp_4_process_3_128160
File format: docx
Character count: 10949
File size: 217 KB
Detailed study of methodologies and objective models for evaluating speech quality, intelligibility, and conversational characteristics in ultra-low bitrate speech codecs, including both clean and noisy conditions, subject to ongoing 3GPP standardization practices.
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
Price: 8 / 10 USD
The file will be delivered to the email address provided at checkout within 12 hours.
The file will be delivered to the email address provided at checkout within 12 hours.
Don’t have cryptocurrency yet?
You can still complete your purchase in a few minutes:- Buy Crypto in a trusted app (Coinbase, Kraken, Cash App or any similar service).
- In the app, tap Send.
- Select network, paste our wallet address.
- Send the exact amount shown above.
The final amount may vary slightly depending on the payment method.
The file will be sent to the email address provided at checkout within 24 hours.
The product description is provided for reference. Actual content and formatting may differ slightly.
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:
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
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
Effective Date:
07/01/2023
Year:
2023
Region / city:
Not specified
Subject:
Reactor Oversight Process Self-Assessment Metrics and Data Trending
Document Type:
Inspection Manual
Organization:
Nuclear Regulatory Commission (NRC)
Author:
Not specified
Target Audience:
NRC inspection personnel, inspectors, and related stakeholders
Period of validity:
Not specified
Approval Date:
Not specified
Date of amendments:
Not specified
Year:
2023
Region / City:
Not specified
Topic:
Educational assessment metrics, racial and SES bias
Document type:
Statistical analysis
Organization / Institution:
Not specified
Author:
Not specified
Target audience:
Researchers, educators, policy makers
Validity period:
Not specified
Approval date:
Not specified
Amendment date:
Not specified
Year:
2015
Region / City:
Massachusetts
Theme:
Workforce Development
Document Type:
Performance Report
Organization:
Massachusetts Department of Transportation
Author:
Not specified
Target Audience:
Stakeholders in Workforce Development
Period of Implementation:
2015–2016
Approval Date:
January 2015
Amendment Date:
Not specified
Section:
8.1
Document Type:
Self-Assessment Checklist
Program:
Sanitation Program
Subject:
Cleaning and Sanitizing of Harvesting Equipment
Organization:
Arizona LGMA
Note:
Organization
California LGMA
Update Date:
3/2025
Scope:
Harvesting Equipment Cleaning and Sanitation
Includes:
Training, Harvesting Equipment, Sanitation Tools, Labelling Storage & Use of Chemicals, Recordkeeping, Verification
Related Documents:
Appendix S; Master Sanitation Schedule (MSS); Standard Operating Procedures (SOPs); Sanitation Standard Operating Procedures (SSOPs)
Intended Users:
Companies conducting harvesting operations
Year:
2026
Organization:
National Institute of Standards and Technology (NIST)
Type of document:
Software documentation
Subject:
Video quality metrics, forensic video analysis, video analytics
Programming language:
Python 2.7.12
Database:
MySQL 5.7.17
Audience:
Researchers and developers in video analytics and forensic analysis
Usage:
Evaluation of video quality metrics against human and analytic scores
Modules:
VQM Import Module, VQM Scoring Module, Analytic Submodule, Quality Submodule
Contact:
[email protected]
License:
Public domain, developed by U.S. Federal Government
Year:
2026
Region / Institution:
United States / Pediatric Cardiology Centers
Topic:
Medical Imaging Quality Assessment
Document Type:
Clinical Performance Metric Specification
Issuing Body:
American College of Cardiology (ACC) / American Heart Association (AHA)
Author:
Pediatric Echocardiography Task Force
Target Population:
Patients ≤18 years old with structurally normal hearts
Assessment Period:
Quarterly
Data Sources:
Prospective flowsheet, retrospective review of stored echocardiographic images
Exclusions:
Incomplete studies due to patient instability or agitation, structurally abnormal cardiac anatomy, prior studies at institution, obesity or poor echo windows
Reporting Method:
Laboratory quality assurance meetings, mean Image Quality Assessment Tool score
Document Type:
Supplementary material
Subject:
Digital image watermarking scheme based on Euclidean Space points
Content Focus:
Generation of embedding location points using Geometric Sequence and Arithmetic Sequence
Mathematical Basis:
Discrete mathematics (Geometric Sequence and Arithmetic Sequence)
Processing Description:
Application of modulus operation on coordinate points relative to host image size (M × N)
Tables Included:
Table 1 (User defined Euclidean Space points), Table 2 (Euclidean Space Points with mod 256), Table 3 (Set of location points without redundant values), Table 4 (Full Reference Quality Metrics), Table 5 (Histogram analysis)
Quality Metrics:
PSNR, SSIM, CORR, BER
Host Images:
Cameraman.tif (512 × 512), Lena.tif (256 × 256 and 512 × 512), Mandril.tif or Baboon.tif (512 × 512), Pepper.tif (512 × 512), Pirate.tif or Man.tif (512 × 512), Walkbridge.tif (512 × 512), Woman_blonde.tif (512 × 512), Woman_blackhair.tif (512 × 512), Whitepage.tif (512 × 512), Blackpage.tif (512 × 512)
Watermark Sizes:
32 × 32 and 64 × 64
Image Type:
Grayscale images
Redundancy Handling:
Removal of redundant coordinate values and exclusion of point (0, 0)
Analytical Component:
Full reference quality assessment and histogram comparison
Year:
2023
Region / City:
USA: Edens, Norway: Bergen 1, Norway: Bergen 2
Theme:
Graph Theory, HRV Metrics
Document Type:
Supplementary Data
Author:
Not specified
Target Audience:
Researchers, Academics
Period of Validity:
Not specified
Date of Approval:
Not specified
Date of Changes:
Not specified