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Real-Time Filter Design System

March 2010, Northwich, Cheshire, Kane Computing Ltd in conjunction with Manchester University recently announced the latest version of SignalWizard real-time filter design kit.

The SignalWizard 2.5 Kit, which includes hardware and software providing a unique, integrated system for designing, downloading and running very high performance filters in real-time. It includes the high-level PC-based software interface that designs the filter according to the user’s requirements, a hardware module based on an advanced digital signal processor and a low-level firmware operating system that implements the filtering operations.

The Signal Wizard 2.5 brings the power of digital signal processing to any audio-bandwidth domain that requires electronic signal filtering. Applications include audio signal processing, sensor signal conditioning, signal analysis, vibration analysis, education and research in electrical, electronic and other physical sciences.

The Signal Wizard is a total-solution package. Due to its flexibility, it is particularly well suited to the real-time processing of audio signals. High quality analogue signal conditioning and a stereo 24-bit resolution codec provide extremely high resolution, sufficient for the most demanding applications.

Richard White, Managing Director of Kane Computing Ltd felt this unique product package would be the ideal low cost design package for many of their signal processing customers in the UK and Europe.

Gregory Kovacs, Professor of Electrical Engineering, Stanford University USA, said “I got everything running and it is simply marvellous! … The system reflects deep thought, design talent, and meticulous implementation. I love it! … Overall, I’m super impressed…The ability to so rapidly prototype filters is amazing.”

Once designed, an integrated software interface is used to download the filter to the hardware module via a serial link where it is executed on demand. Most important, the system requires no knowledge of digital signal processing (DSP) theory on the part of the user, or of the mathematics associated with digital filter design. New features of version 2.5 include true stand-alone operation (without PC) once configured, IIR and adaptive filters, true dual channel operation, impulse response import, real or complex frequency response import, delay options for in/out and FIR filter modes, real-time spectrum analyzer, dual channel sine wave generator, arbitrary function generator.

The SignalWizard Hardware Module Kit connects to a PC via a standard serial (RS232) link. Essentially, the module comprises signal pre- and post-conditioning circuitry, a high-resolution stereo codec, a high-speed DSP device, memory, timing and control sub-systems. The 24-bit over-sampling stereo codec system is configurable by the user to any one of twelve sample rates, ranging from 48 kHz down to 4 kHz. In terms of input signal frequency ranges, this equates to 24 kHz down to 2 kHz. The codec accepts or generates a 2 V peak-to-peak signal. The power of the hardware module depends on its own operating system, which is invisible to the user, but communicates with the PC software.

The SignalWizard PC Software performs the following major functions: It designs the filter according to the user’s specifications. The filter is expressed as a set of FIR coefficients or taps, IIR coefficients or as an adaptive expression. Collectively, the coefficients of a filter are known as the impulse response.

It converts the floating-point representation of the coefficients to 24-bit fractional arithmetic (again, this is invisible to the user).

It automatically downloads the low-level firmware operating system to the hardware via a serial link.

It automatically communicates with the firmware embedded in the digital system to download the filter coefficients via the same serial link.

It allows the user to alter the system’s gain, sampling rate and delay during run-time.

It allows the user to switch instantaneously between a filtered or non-filtered signal at runtime.

Most important, the software includes a flexible filter design section, a window that displays the frequency or impulse response of the realised filter in various formats, and a hardware control section for downloading a filter and generally communicating with the filter module.

The SignalWizard Hardware Module Kit can be purchased as a separate item.

SignalWizard was originally conceived in the UK and the intellectual property rights reside with Professor Patrick Gaydecki, The University of Manchester, Manchester, M60 1QD, United Kingdom. Tel: +44(0)161 306 4906. www.signalwizardsystems.com.

About Kane Computing

KCL (www.kanecomputing.co.uk) has been providing Image Processing, DSP and high performance computing products for use in industry, education and research since 1987 and is a Texas Instruments Third Party Partner specialising in consultancy and advice on TI development tools/platforms and image processing applications. KCL have extensive knowledge and experience of providing video compression solutions for many industries particularly for digital video security and high quality broadcast applications. KCL has a policy of continual improvement and operates its business in accordance with the requirements of ISO9001:2008.

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Mitra Energy & Infrastructure and CISSOID cooperate in the design of next generation, high performance power converters for electrical vehicles.

Wavre & Mont-Saint-Guibert, Belgium. March 2010. Mitra Energy & Infrastructure SA, provider of high reliability managed energy solutions and Cissoid SA, leader in high-temperature semiconductor solutions, have entered an agreement to cooperate on the design of high-efficiency, high-temperature, turnkey energy conversion solutions for the electric and plug-in hybrid vehicles (EV & P-HEV).

Today’s battery chargers, DC-DC converters or motor drivers used in hybrid and electric vehicles use conventional semiconductor components, with limited performance in terms of efficiency and operating temperature. As a result, these equipments require complex and expensive fluid cooling to keep the operating temperature low. Those energy converters are often bulky and add weight to the vehicles, limiting their autonomy and performance.

“A new generation of components is now becoming available. Their characteristics support the design of high power-density, high-efficiency energy converters. Using these new devices will enable us to reduce the size and the weight of energy converters by sixty percent, contributing to further energy savings and increased autonomy of battery-powered vehicles.” says Eric Brouwers, CEO of Mitra E&I: “We are particularly pleased to cooperate with Cissoid, who has a unique experience in the design and implementation of those new components. Combining it with our years of expertise in high-reliability power solutions is going to accelerate the time-to-market of a new generation of energy converters.”

Tony Denayer, Cissoid’ CEO added: “Car makers have a strong need to increase the reliability of their power conversion systems, while decreasing their size and weight. By combining Mitra’s recognized expertise in the design of high-power converters with Cissoid high-temperature semiconductors, this partnership is going to bring to the market some cutting-edge power converters dedicated to the EV & P-HEV manufacturers’ needs. Many tier-1 players in the field of aeronautics and railway have already selected our solutions; the cooperation with Mitra is going to accelerate the adoption of similar solutions by the electric & hybrid automotive industry.”

About Mitra Energy & Infrastructure SA (www.mitra-ei.com)

With more than 30 years experience, Mitra Energy & Infrastructure SA (www.mitra-ei.com) is a pioneer in the field of power technology. Today, the company designs, develops and supplies highly reliable standard and custom power solutions, infrastructure controllers, network management solutions, system assembly and project management. Reputed for the quality of its solutions Mitra E&I is a project-oriented company serving professional high reliability applications in the telecommunication, transportation, medical and industrial segments. The company headquarters is based in Wavre, Belgium, and in addition to the Benelux has direct account managers located in Germany, France, the UK and Scandinavia as well as representatives in a number of other countries around the world.

About Cissoid (www.cissoid.com)

CISSOID is the leader in high temperature semiconductor solutions, delivering standard products and custom solutions for power management, power conversion and signal conditioning in extreme temperature and harsh environments. CISSOID provides high reliability products guaranteed from -55°C to +225°C and commonly used outside that range, from cryogenic lows to upper extremes.

Whether the ambient temperature is low but the power dissipation heats up the chips, or in high temperature environments, CISSOID products enable energy, weight and cost savings in lighter, cooling-free and more compact electronic systems. They are used in mission-critical systems as well as in applications requiring long term reliability. CISSOID supplies leaders in the Oil&Gas, Aeronautics, Industrial and Automotive markets. For more information, visit www.cissoid.com or contact the company’s representatives at www.cissoid.com/company/about-us/contacts.html.

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Agilent Technologies’ Complimentary CDs offer Insight on Signal Integrity and Photonic Test

What: These complimentary CDs are packed with timely information to help overcome test challenges.

Digital Test: How to Master the High-Speed Test Challenge If you develop embedded designs, you face big challenges when it comes to characterizing forward-clocked memory, CPU interfaces and high-speed digital devices based on PCIe(tm)2, USB, DisplayPort, HDMI and MIPI. Learn about the test requirements of your designs and get answers to your questions about compliance testing of next-generation multigigabit interfaces.

Photonic Test: Be Ready for 40/100G Optical Networks and Components Get ready for the transition to next-generation networking technology. This series of presentations covers test requirements for high-speed communication systems/components and advanced signal and modulation principles. Explore ways to test transients of reconfigurable network elements and measure the polarization and dispersion behavior of new component and network designs.

When: Starting March 1, 2010, online

Where: For further details and ordering: www.agilent.com/find/webcastcds-dpt

For more information on Agilent’s series of webcast: www.agilent.com/find/dptwebcasts

Additional information: http://www.agilent.com/find/photonic and http://www.agilent.com/find/si

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