Encoder decoder CMX6 series

voicecodec

As a members of the CML DuraTALK family of digital voice products, the CMX618/CMX638 are flexible, high integration, high performance, RALCWI Vocoder, offering near toll-quality voice at very low bit rates. Half-duplex RALCWI Vocoder with Integrated Voice Codec Full-duplex RALCWI Vocoder with Integrated Voice Codec A Forward Error Correction (FEC) engine provides optimum performance in real life applications. The RALCWI Vocoder comprises four independent functions which are selectable by the host: Voice Encoder, FEC Encoder, Voice Decoder and FEC Decoder. The CMX618 includes an integrated voice CODEC, offering a complete analogue voice to low bit rate vocoded data function, with integrated channel filters, which removes the need for external components. Both devices operate from a dual power supply (1.8V and 3.3V) and are available in both 48-pin LQFP (L4) and 48-pin VQFN (Q3) packages. Function Add-ins New features or enhancements to aid Vocoder operation are available. Function Add-ins currently available: Voice Store and Retrieve (VSR) Noise Gate Encryption Fine Analogue Output Gain Option Features RALCWI™ CML’s Digital Voice Technology Near Toll Quality RALCWI™ Coding Algorithm No royalty/license fee Multiple Bit-Rate Modes – 2400 or 2750 bps – 3600 bps with FEC Enabled 4-bit Viterbi Soft Decision Decoding Integrated Voice Codec(CMX618 and CMX638 only) Integrated Input and Output Channel Filters 20ms, 40ms, 60ms and 80ms Packet Lengths No Licensing or Royalty Payments Ancillary Audio Functions: – Voice Activity Detector – Comfort Noise Generator – DTMF and Single Tone Regeneration