TS 06.42 – Voice Activity Detector for DTX
3GPP TS 06.42 is the 3GPP Technical Specification for Voice Activity Detector for DTX. It is published in 4 releases (Ph2 to R98); the latest version is 7.0.1 in R98.
Specifies VAD algorithm for half-rate GSM speech channels with DTX. Defines detection criteria, adaptive filtering, and test methods for speech/non-speech classification.
Releases and versions of TS 06.42
| Release | Latest version | Links |
|---|---|---|
| R98 | 7.0.1 | Read · Download (3GPP) |
| R97 | 6.0.1 | Read · Download (3GPP) |
| R96 | 5.0.1 | Read · Download (3GPP) |
| Ph2 | 4.1.1 | Read · Download (3GPP) |
Scope of TS 06.42
Category: Services (Speech Services). Technology generation: 2G. Network layer: Services.
Who should read this specification?
- Device manufacturers
- Network operators
Implementation notes
Complexity level: Intermediate. Implementation difficulty: Medium.
Key technologies
Other specifications in the 06 series
- TS 06.22 Half Rate Speech DTX Comfort Noise
- TS 06.31 DTX operation for GSM speech channels
- TS 06.32 Voice Activity Detector for DTX
- TS 06.41 Half Rate Speech DTX Operation Specification
- TS 06.51 Enhanced Full Rate Speech Processing Introduction
- TS 06.53 GSM Enhanced Full Rate Codec C Code
- TS 06.54 GSM Enhanced Full Rate Speech Codec Testing
- TS 06.55 Enhanced Full Rate Speech Codec Performance
Related glossary terms
Related topics
Related technologies
Frequently asked questions
What is 3GPP TS 06.42?
3GPP TS 06.42 is the 3GPP Technical Specification for Voice Activity Detector for DTX. Specifies VAD algorithm for half-rate GSM speech channels with DTX. Defines detection criteria, adaptive filtering, and test methods for speech/non-speech classification.
Which 3GPP releases include TS 06.42?
TS 06.42 is published in 4 releases, from Ph2 to R98. The latest version on 3GPP Explorer is 7.0.1 (R98).
What category does TS 06.42 belong to?
TS 06.42 belongs to the Services (Speech Services) category of 3GPP specifications. It applies to 2G networks.
View the full specification with interactive table of contents, version history, and AI analysis.
Read Full Specification →