Speech software runs on Blackfin

Voice technology specialist NCT has released its noise and echo cancellation technology for use with the Blackfin processor from Analog Devices.

Voice technology specialist NCT has released its noise and echo cancellation technology for use with the Blackfin processor from Analog Devices.

The Blackfin processor is one of a new breed of 16/32bit 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 32bit RISC MCU programming model on a SIMD architecture.

NCT has ported its 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 is 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, DSPs and real-time operating systems.

It enables the world's top manufacturers to consistently deliver high quality voice-based communication systems.

Back to top