TS 26.449 – EVS Codec Comfort Noise Generation for DTX
3GPP TS 26.449 is the 3GPP Technical Specification for EVS Codec Comfort Noise Generation for DTX. It is published in 8 releases (Rel-12 to Rel-19); the latest version is 19.0.0 in Rel-19.
Specifies comfort noise generation for EVS codec during DTX to maintain background noise continuity. Includes LP-CNG and FD-CNG schemes, SID payloads, and update rates.
Releases and versions of TS 26.449
| Release | Latest version | Links |
|---|---|---|
| Rel-19 | 19.0.0 | Read · Download (3GPP) |
| Rel-18 | 18.0.0 | Read · Download (3GPP) |
| Rel-17 | 17.0.0 | Read · Download (3GPP) |
| Rel-16 | 16.0.0 | Read · Download (3GPP) |
| Rel-15 | 15.1.0 | Read · Download (3GPP) |
| Rel-14 | 14.1.0 | Read · Download (3GPP) |
| Rel-13 | 13.1.0 | Read · Download (3GPP) |
| Rel-12 | 12.1.0 | Read · Download (3GPP) |
Scope of TS 26.449
Category: Services (Voice Codecs). Technology generation: Multi-Gen. Network layer: Services.
Who should read this specification?
- Device manufacturers
- Network operators
- Researchers and academics
Implementation notes
Complexity level: Advanced. Implementation difficulty: Medium.
Key technologies
Specifications referenced by TS 26.449
Specifications that reference TS 26.449
- TS 26.114 IMS Multimedia Telephony Client
- TS 26.441 EVS Audio Processing Introduction
- TS 26.442 EVS Codec Fixed Point ANSI-C Code
- TS 26.443 EVS Codec Floating-Point C Code
- TS 26.446 EVS Codec AMR-WB Backward Compatibility Spec
- TS 26.450 EVS Codec DTX System Level Aspects
- TS 26.444 EVS Codec Test Sequences
- TS 26.452 EVS Codec Fixed-Point C Code Implementation
- TS 26.451 EVS Codec Voice Activity Detector (VAD) Specification
- TR 26.952 EVS Codec Selection, Verification & Characterization
- TS 26.179 Codecs and Media Handling for MCPTT
- TS 26.453 EVS Codec Generic Frame Format for 3G CS Networks
Other specifications in the 26 series
- TS 26.445 EVS Codec Specification
- TS 26.446 EVS Codec AMR-WB Backward Compatibility Spec
- TS 26.447 EVS Frame Loss Concealment Procedure
- TS 26.448 EVS Jitter Buffer Management Specification
- TS 26.450 EVS Codec DTX System Level Aspects
- TS 26.451 EVS Codec Voice Activity Detector (VAD) Specification
- TS 26.452 EVS Codec Fixed-Point C Code Implementation
- TS 26.453 EVS Codec Generic Frame Format for 3G CS Networks
Related glossary terms
Related topics
Related technologies
Frequently asked questions
What is 3GPP TS 26.449?
3GPP TS 26.449 is the 3GPP Technical Specification for EVS Codec Comfort Noise Generation for DTX. Specifies comfort noise generation for EVS codec during DTX to maintain background noise continuity. Includes LP-CNG and FD-CNG schemes, SID payloads, and update rates.
Which 3GPP releases include TS 26.449?
TS 26.449 is published in 8 releases, from Rel-12 to Rel-19. The latest version on 3GPP Explorer is 19.0.0 (Rel-19).
What category does TS 26.449 belong to?
TS 26.449 belongs to the Services (Voice Codecs) category of 3GPP specifications. It applies to Multi-Gen networks.
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