Tech-invite  3GPPspecs  Glossaries  IETF  RFCs  Groups  SIP  ABNFs   Ti+   SearchTech-invite World Map Symbol
Top   in Index   Prev   Next

TS 02.76 (SA4)
Noise suppression for the AMR codec – Service description Stage 1

3GPP‑Page   ETSI‑search   full‑ToC    
(P) GSM Rel-99 v8.0.1  2001/08  11 p.

Rapporteur:  USAI, Paolino
Descendant:  TS 22.076
See also:  AMR-related TS/TR
This TS specifies the stage 1 description for the Noise Suppression feature for the AMR codec which enhances the input speech signal corrupted by acoustic noise.

 

Here   Top

 

1  Scope  PDF-p. 5
2  References
3  Definitions and abbreviations
3.1  Definitions
3.2  Abbreviations
4  Description
4.1  Applicability of Noise Suppression to Basic Services  PDF-p. 6
4.2  Support in Mobile Stations (MS)
4.3  Support in the Network
4.4  Parameters to be indicated and negotiated
4.5  Provision of Service  Up
4.5.1  Location Independence
4.5.2  Provision of service within and between networks
4.5.3  Subscription and Billing Information
4.6  Quality of Service (QoS)  PDF-p. 7
4.6.1  Impact on Speech Quality
4.6.1.1  Initial Convergence Time
4.6.1.2  No Degradation in Clean Speech
4.6.1.3  No Artefacts in Residual Noise
4.6.1.4  No Speech Clipping and no Reduction in Intelligibility
4.6.1.5  Quality Impact compared to AMR  Up
4.6.2  Impact on Speech Path Delay  PDF-p. 8
4.7  Impact on Complexity
4.8  Impact on Channel Activity
5  Interaction with supplementary services
5.1  General
5.2  Explicit Call Transfer (ECT)
5.3  Call wait/Call hold  PDF-p. 9
5.4  Multiparty
5.5  Service Announcements
6  Interaction with Alternate and Followed by services  Up
7  Interaction with other speech services
8  Interaction with DTMF and other signalling tones
9  Interaction with Lawful Intercept
10  Interaction with TFO
A  Change Request History  PDF-p. 10

Up   Top