Specialists in Speech and Audio Software Development

Material Copyright © 2023 ESPICO Ltd

CELT

The CELT ultra-low delay audio codec has been merged into the IETF OPUS codec. The CELT codec is a compression algorithm for audio, suitable for transmitting music with high quality and is also suitable for speech. A quality/bitrate trade-off in CELT makes it competitive with widely used high delay codecs.

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

Features

• Constant bitrates of 32 to 128 kbps and above
• Sample rates from 8 to 48 kHz
• Ultra-low latency
• Supports Packet Loss Concealment (PLC)

Availability

ESPICO’s optimised solution can be ported to any platform. Supported platforms include:

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

Applications

• VoIP
• Video conferencing
• In-game chat
• Storage and streaming
• WebRTC