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Consilient develops optimised software algorithms involved in voice, data, fax and video communications. We also provide integrated solutions for the embedded and networked markets.
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In the fast-evolving world of mobile communication, delivering clear, high-quality voice calls over LTE networks has become a fundamental necessity. Consilient's VoLTE Voice Engine is at the forefront of this technological revolution, offering a superior voice-over LTE (VoLTE) service solution.
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In today's digital age, clear and effective communication is paramount. Whether for business meetings, virtual conferences, or personal calls, superior voice quality can significantly impact the user experience. Consilient's Voice Quality Enhancement solutions are designed to address common audio challenges.
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At Consilient, we are at the forefront of audio innovation, bringing you state-of-the-art acoustic microphone beamforming software that transforms how you capture and experience sound. Our cutting-edge acoustic beamforming products are designed to provide unparalleled clarity and precision.
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Consilient's VoIP Call Decoder is an innovative solution designed to meet the growing demands of Lawful Interception and communication management. This state-of-the-art product is engineered to handle voice, fax, and video data, providing unparalleled capabilities for VoIP decoding.
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In the ever-evolving landscape of embedded systems, integrating Voice over Internet Protocol (VoIP) has opened new avenues for communication technology. Consilient has developed a cutting-edge Embedded Voice Over IP (VoIP) product that offers a compact and powerful solution tailored for microcontroller (MCU).
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WB-AMR Codec (Wideband Adaptive Multi-Rate) - Data Sheet
The WB-AMR codec, short for Wideband Adaptive Multi-Rate codec, is a speech audio codec designed to encode wideband speech signals for voice communication over various transmission systems. The WB-AMR codec supports higher audio quality than narrowband codecs by extending the frequency range up to 7 kHz, enhancing intelligibility and naturalness.
Technical Specifications - WB-AMR Codec
| Parameter | Specification |
|---|---|
| Full Name | Wideband Adaptive Multi-Rate (WB-AMR) Codec |
| Standardized By | 3GPP (ETSI TS 26.171, 26.190) |
| Bandwidth | Wideband (50 Hz to 7000 Hz) |
| Sampling Rate | 16 kHz |
| Bit Rates Supported | 6.60, 8.85, 12.65, 14.25, 15.85, 18.25, 19.85, 23.05, 23.85 kbps |
| Frame Size | 20 ms per frame |
| Codec Delay | Approx. 34-45 ms |
| Frame Structure | 16-bit encoded frames with error detection |
| Algorithm | Algebraic Code Excited Linear Prediction (ACELP) |
| Voice Activity Detection | Yes (with Discontinuous Transmission support) |
| Error Resilience | Robust against transmission errors and packet loss |
| Complexity | Moderate - suitable for mobile platforms |
Applications Areas of WB-AMR Codec
Mobile & Cellular Communication
- HD Voice for GSM, UMTS, LTE, WCDMA
- VoLTE and VoWiFi support using WB AMR codec
- Voice over 5G applications
IP and VoIP Applications
- SIP and VoIP clients
- WebRTC, conferencing software
- Softphone and collaboration tools
Multimedia & Messaging
- Enhanced voice recording in .awb format
- MMS support in 3GP containers
- Push-to-Talk, RCS messaging
Consumer & Playback Devices
- Smartphones, feature phones
- Embedded voice applications
- Media playback (support via Android, FFmpeg, etc.)
Performance Summary - WB-AMR Codec
| Bitrate (kbps) | Speech Quality (MOS-LQO) | Use Case |
|---|---|---|
| 6.60 | ~3.6 | Low-bitrate streaming, low-bandwidth |
| 12.65 | ~4.0 | Balanced quality/bitrate |
| 23.85 | ~4.5 | Maximum speech quality (HD voice) |
Supported Platforms
- Operating Systems: Linux, Android, iOS, Embedded RTOS
- Architectures: ARM Cortex-A/R/M, NEON/SIMD, x86/x64, MIPS DSP, Andes DSP, Verisilicon ZSP
Why choose the WB-AMR Codec?
High speech quality over mobile and VoIP networks
Bandwidth efficiency and scalable bitrate control
Resilience to network conditions and errors
Proven adoption in 3GPP, VoLTE, and HD voice systems
Support for real-time voice and stored multimedia use cases
References & Standards - WB-AMR Codec
- ETSI TS 126.171 -AMR-WB Speech Codec: General Description
- ETSI TS 126.190 -AMR-WB Codec Transcoding functions
- ETSI TS 126.191 -AMR-WB Codec Error concealment of lost frames
- ETSI TS 126.192 -AMR-WB Codec Comfort noise aspects
- ETSI TS 126.193 -AMR-WB Codec Source controlled rate operation
- ETSI TS 126.194 -AMR-WB Codec Voice activity detector
- 3GPP TS 26.201 -AMR-WB Speech Codec Frame Format
- IETF RFC 4867 - RTP Payload Format for AMR and AMR-WB Codecs
