Digital voice scrambler for analog radio systems offers secure voice communication
May 04, 2012 // Paul Buckley
CML Microcircuits has released a new digital voice scrambler for analog radio system. The CMX7011 is a flexible, half duplex, digital voice processor specifically designed to implement a digital voice scrambler for use with conventional radio communication systems.
The scrambler can also be used with analog professional mobile radio, wireless door access and gate entry systems.
The need for secure voice communication has become an important requirement for wireless communication. With new communication systems moving towards the digital domain which inherently provides voice security, the widely-used legacy analog systems are being left behind. A number of analog voice privacy systems are available today, based on frequency inversion techniques that provide a level of security. In many applications higher levels of voice security are required whilst remaining on lower-cost, widely available analogue radio systems.
Digital scrambling is the answer, providing the highest level of voice security and the advantage of digital voice. The CMX7011 provides the solution with an embedded state-of-the-art, low-cost, low-bit rate Vocoder combined with a robust audio-band voice data modem.
The device allows simple implementation and configuration within existing designs and is intended to be added to a radio via an accessory port or ‘feature socket’. The CMX7011 offers good quality speech and, using the internal digital scrambling algorithm, significantly higher levels of security are achieved.
Built in to the CMX7011 is CML's proven and reliable RALCWI (Robust Advanced Low Complexity Waveform Interpolation) vocoder providing near toll quality speech at low bit rates. The CMX7011 also offers ‘instant voice capture’, featuring push-to-talk (PTT) buffering eliminating clipping in PMR applications. New features and enhancements to existing functions may be provided in future, via Function Images, expanding the capabilities of the device.
The CMX7011 operates at 3.0 V to 3.6 V and comes in a 48-pin LQFP or VQFN package.
Visit CML at www.cmlmicro.com
From warm to cool white: colour-temperature tunable LEDs
November 20, 2014
At electronica, LED manufacturer Everlight introduced what the company claims to be the world's first colour-temperature ...
System provides high-voume solution for flexible OLED displays
Isabellenhütte diversifies channels, clientele
SiRFusion enables accurate indoor location without new infrastructure
EnOcean eyes the consumer market
Can Fool's gold reduce the cost of solar cells?
November 20, 2014
A research team from University of Wisconsin-Madison has discovered that iron pyrite - a compound that makes a mineral commonly ...
Nature constants: How variable are they really?
Advanced lead-carbon batteries could enable 48V super hybrid vehicles
The Messe U-bahn crush business indicator
- Halogen-free options and increased performance for terminal blocks
- Wireless Power User Guide
- Secure is the New Smart
- 5 Best Practices for Designing Flexible Test Stations
InterviewFreescale CEO: 'IoT isn't just buzz'
Coming after the solid third quarter results that produced higher operating margins and improving cash flow, Freescale Semiconductor's CEO Gregg Lowe had every reason to be chipper and lively when EE Times ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Cherry is giving away five of its Energy Harvesting Evaluation kits, worth over 266 Euros each, for EETimes Europe's readers to win. Cherry's energy harvesting technology benefit mostly applications where a complex wire assembly and/or batteries would be inappropriate.
The required RF-energy is created by the mechanical actuation of the switch and the data is transmitted...MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.