CODECPRO AMR-WB+ (EXTENDED AMR-WB) CODEC
3GPP SPEECH AND AUDIO STANDARD CODEC

The AMR-WB+ speech and audio codec is the 3GPP-recommended hi-fi audio codec for MMS, PSS and MBMS services over GSM and WCDMA networks. AMR-WB+ is also recommended for DVB-H applications. AMR-WB+ scales to cover the full audio spectrum and uses high-efficiency parametric stereo (HE-PS) to maintain high-fidelity stereo image reproduction at even the lowest bit rates and excellent quality at higher rates. Coded AMR-WB+ media can be encapsulated in 3GPP (.3gp, i.e., MMS) or MPEG-4 (.mp4) file formats and used along the entire delivery chain in multimedia applications. The RTP payload format for AMR-WB+, defined by the IETF, supports interleaving for robust streaming and forward error correction (FEC) for enhanced robustness.

AMR-WB+ Codec Overview

The memory and CPU details are generic Standard specifications.

For more details and information about CodecPro's AMR-WB+ optimisation, please contact us at sales@codecpro.com.

AMR-WB+ Codec Technical Specifications

  • Bandwidth: 50 - 19200 Hz
  • Standardized: 3GPP 2004
  • Technology: Hybrid ACELP and Transform Coding
  • Bit rate: 6 – 36 kbps (mono) and 7 – 48 kbps (stereo)
  • Delay (msec): 90 X ISF (int. sampling frequency)
  • Frame size (msec): 80 x ISF
  • Lookahead (msec): 10 x ISF
  • Quality: Ultra-Wideband for Speech & Audio
  • Complexity (MIPS): Decoder: 8 (mono) & 24(stereo)
  • ROM (bytes): 300K
  • RAM (bytes): Encoder: 300K Decoder: 24K