Specialists in Speech and Audio Software Development

Material Copyright © 2023 ESPICO Ltd

ETSI WB-AMR+

The Extended Adaptive Multi-Rate Wideband (AMR-WB+) audio codec extends AMR-WB, adding support for stereo signals and higher sampling rates. Transform coded excitation (TCX) is used in addition to ACELP. AMR-WB+ operates at bit-rates from 5.2 kbps to 48 kbps.

The ESPICO implementations are highly optimised, realising low memory and MHz requirements. Contact ESPICO for specific resource requirements.

Features

• Backward compatible with AMR-WB
• Supports Voice Activity Detection (VAD)
• Supports Discontinuous Transmission (DTX)
• Supports Comfort Noise Generation (CNG)
• Supports substitution and muting of lost frames

Availability

ESPICO’s optimised solution can be ported to any platform. Platforms supported include:

• ZSP Cores including ZSP400, ZSP500, ZSP800 families
• ARM including Cortex and NeonTM
• MIPS32 74KTM
• Ceva DSP Cores

Applications

• Digital cellular telecommunications
• VoIP
• Wireless communications
• Portable media devices