ARC Audio AMR-WB (G.722.2) Encoder and Decoder

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ARC AUDIO AMR-WB (G.722.2) ENCODER AND DECODER Japan

ARC Audio AMR-WB (G.722.2) Encoder and Decoder

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DesignWare® ARC™ Audio Adaptive Multi Rate Wide Band (AMR-WB) software for the DesignWare ARC Sound AS211SFX and AS221BD audio processors consists of a speech system for devices such as tablets, mobile phones and voice over IP (VoIP) applications.

AMR-WB is defined in ITU standard G.722.2 and referred to as wideband coding of speech using Adaptive Multi-Rate Wideband.

Compared to AMR-NB (300-3400Hz) AMR-WB has a much wider bandwidth (50-7000Hz) and provides a much better audio quality.

ARC Audio AMR-WB (G.722.2) Encoder/Decoder

Highlights

Compliant to the G.722.2 ITU-T standard speech codec
Compliant to the following 3GPP (GSM) standards

3GPP TS 26.173
3GPP TS 26.174 (Test Vectors)
3GPP TS 26.190 (Speech Codec)
3GPP TS 26.194 (Voice Activation Detector)

Wide Audio Bandwidth: 50-7000Hz
Bitrates: 6.60, 8.85, 12.65, 14.25, 15.85, 18.25, 19.85, 23.05 and 23.85 kbps (all nine speech codec modes)
Supports source controlled rate (SCR)
Sampling rate: 16 KHz with a resolution of 14 bits (in a 16 bit word)
Voice Activity Detection (VAD)
Comfort Noise Generation (CNG)
Packet Loss Concealment support for the decoder
Supports ITUT, MIME, DEFAULT, and IF2 bit stream formats
Discontinuous Transmission (DTX)
Robust against memory latency: 64/16 MHz processor load at 100 cycles latency (encoding/decoding)