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Enhanced Variable Rate Codec

Known as: EVRC, IS-127 
Enhanced Variable Rate CODEC (EVRC) is a speech codec used in CDMA networks. It was developed in 1995 to replace the QCELP vocoder which used more… 
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Related topics

Related topics

5 relations
Enhanced Variable Rate Codec BFFmpegQualcomm code-excited linear predictionSelectable Mode Vocoder

Papers overview

Semantic Scholar uses AI to extract papers important to this topic.
2008
2008
Real-Time Multi-user Transcoding for Push to Talk over Cellular
  • S. Coulombe
  • The Second International Conference on Next…
  • 2008
  • Corpus ID: 39024242
Transcoding is required to enable interoperability between push to talk over cellular (PoC) clients with incompatible… 
2008
2008
Performance modeling and evaluation of data/voice services in wireless networks
Application-level performance is a key to the adoption and success of the CDMA 2000. To predict this performance in advance, a… 
2008
2008
Robust Detection of Underwater Transient Signals Using EVRC Noise Suppression Module
Detection of transient signals is generally done by examining power and spectral variation of the received signal, but it becomes… 
2007
2007
Noise Reduction for VoIP Speech Codecs Using Modified Wiener Filter
Noise reduction is essential to achieve an acceptable QoS in VoIP systems. This paper proposes a Wiener filter-based noise… 
2005
2005
Single-Microphone Noise Suppression for 3G Handsets Based on Weighted Noise Estimation
A noise suppression algorithm with high speech quality based on weighted noise estimation is presented. This algorithm… 
2004
2004
End-to-end user perceived application performance in 3G+ networks
We address application-level performance issues in terms of wireless technologies evolution from 3G-1X RTT to 3G-1X EV and… 
Review
2004
Review
2004
On the architecture of the cdma2000/spl reg/ variable-rate multimode wideband (VMR-WB) speech coding standard
The description and design of the source-controlled variable-rate multimode wideband (VMR-WB) codec recently selected by the 3… 
2003
2003
RTP Payload Format for Enhanced Variable Rate Codecs (EVRC) and Selectable Mode Vocoders (SMV)
This document describes the RTP payload format for Enhanced Variable Rate Codec (EVRC) Speech and Selectable Mode Vocoder (SMV… 
2001
2001
Standardization of the selectable mode vocoder
The migration from the first generation of cellular telephony to the second has included a transition from an analog speech… 
1998
1998
Robust speech mode based LSF vector quantization for low bit rate coders
Robust vector quantization of LSF parameters at a low bit rate is essential for voice coders operating below 5 Kbps. A novel… 
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