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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

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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… 
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… 
2004
2004
Noise reduction method for wideband speech coding
We present a new low complexity noise reduction (NR) method based on spectral subtraction and overlap-add analysis/synthesis. A… 
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… 
2003
2003
Speech in the VQE device environment
  • Irina Cotanis
  • IEEE Wireless Communications and Networking…
  • 2003
  • Corpus ID: 4434484
The speech quality over the converged voice and data networks represents a challenge for the network developers and operators… 
2001
2001
On integrating acoustic echo and noise cancellation systems for hands-free telephony
An integrated acoustic echo and noise cancellation system for hands-free telephony is presented. The proposed system includes a… 
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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