NCT Creates Voice Technology for Analog Devices' Blackfin Processor

12/20/2005 - Voice technology specialists, NCT, have announced their noise and echo cancellation technology for the Blackfin Processor from Analog Devices.

The Blackfin Processor is one of a new breed of 16/32-bit embedded processors designed specifically to meet the computational demands and power constraints of modern embedded audio, video, and communications applications. The Blackfin has been delivering breakthrough signal-processing performance and power efficiency whilst also offering a full 32-bit RISC MCU programming model on a SIMD architecture.

NCT have ported their ClearSpeech noise and echo cancellation technology to the ADSP-BF533 version of the processor. ClearSpeech is a suite of technologies that lead the way in the removal of background noise and voice echo, to ensure human listeners and voice recognition systems can hear the "talker" with optimum clarity.

NCT's ClearSpeech for Blackfin is available as an object code library. For engineers seeking to evaluate NCT's ClearSpeech products on the Blackfin processor, NCT are providing a Program Image that runs on the Blackfin EZLITE evaluation board, along with comprehensive User Instructions. This code has a 16kHz sampling rate and 8ms block length and is particularly suitable for wideband, high voice quality, telephony applications.

"We have important customers using our ClearSpeech product on Analog Devices processors, so we are very pleased to be able to expand our offering with the addition of the Blackfin solution," said Dr Gillian Davis, Managing Director of NCT. " The Blackfin processor is very highly regarded within the embedded development community, so we are anticipating a lot of interest in this most recent version of ClearSpeech."

NCT's ClearSpeech technology is used in products such as hands-free car kits, 3G phones, emergency service communication systems and even motor racing radio systems. This technology can be used on a broad range of microprocessors, DSP's and realtime operating systems. It enables the world's top manufacturers to consistently deliver high quality, voice-based, communication systems.

NCT is a member of The Collaborative, Analog Devices' Third Party Program for Embedded Processor & DSP Applications. NCT have offices in Europe, the US and in Japan, supporting NCT's existing global customers and providing technical support and assistance to companies interested in adopting the ClearSpeech products.

About NCT
Trading since 1990, Noise Cancellation Technologies (Europe) Ltd, NCT, is a world leader in the development of technologies for the removal of noise and echo from communication systems such as mobile phones, radio systems, intercoms, hands-free kits and voice recognition systems. By developing advanced software algorithms that run on DSP's (digital signal processors) and CPU's, NCT has enabled some of the world's top manufacturers to deliver high quality voice-based communication systems. NCT now has sales offices in the UK, the US and Japan.

Noise Cancellation Technologies (Europe) Ltd, is a wholly owned subsidiary of NCT Group, Inc. NCT Group, Inc. (NCTI) is a publicly-traded, high-tech company with a strong technology base. NCTI is rich in intellectual property with 578 patents and related rights.

ClearSpeech® is a registered trademark owned by NCT Group, Inc. Blackfin® is a registered trademark of Analog Devices Inc.

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