Digital Voice

CML’s DuraTALK family of digital voice products comprises a range of flexible technologies supporting voice-data generation, coding, transcoding and decoding functions for digital communication systems, as well as many other in-band audio applications where there is a need for storage and playback.

digital-voice
Digital Voice Products
ProductProduct DescriptionVoice-data SchemeVoice-band CodecSupply Voltage
(V)
Typ. Current
(mA)
Package TypeAdditional FeaturesKey Benefits
CMX655DUltra-low Power Voice CodecPCM
(linear, A-law, µ-law)
Yes1.8 - 3.6300µA24-VQFN1W Speaker DriverMEMS microphone support
Ultra-low operating power consumption
CMX7011Digital Voice Encryption/
ACE Processor
RALCWI ™Yes3.0 - 3.63048-VQFN
48-LQFP
I/O Filters Packet Data
Voice Storage Encryption
Complete voice encryption, system including Air Interface protocol.
CMX7262Professional Radio
2400bps Vocoder
TWELP ™Yes3.0 - 3.62364-VQFNI/Q FiltersHigh performance low-bit
rate Vocoder.
CMX7261Digital Voice Multi-
transcoder
ADM, CVSD, PCM
G.729A, G.711, G.723.1
Yes3.0 - 3.65264-VQFNI/O FiltersPerforms as a group of
audio codecs.
CMX608 CMX618 CMX638Low-cost 2400bps VocoderRALCWI ™Yes (Not CMX608)3.0 - 3.62048-VQFN
48-LQFP
I/O FiltersLow-cost 2400bps Vocoder with robust FEC. CMX638 offer duplex operation.
CMX649Adaptive Delta Modulation
(ADM) Codec
ADM
PCM
CVSD
Yes2.7 - 5.52.920-TSSOP
20-SOIC
I/O FiltersGeneral purpose error
tolerant voice coding scheme.
CMX639CVSD Voice CodecCVSDYes3.0 - 5.51.916-SOIC
24-TSSOP
I/O FiltersGeneral purpose error
tolerant voice coding scheme.

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