NCT Provides ClearSpeech for National Instruments' LabVIEW

Cambridge technology company NCT is providing its ClearSpeech voice technology software as an embedded toolkit for the National Instruments LabVIEW.  This new technology provides engineers designing communication systems graphical programming for applications such as mobile phones, radio systems, intercoms, hands-free kits and voice recognition systems.

The NI LabVIEW Embedded Module for ADI Blackfin Processors extends the LabVIEW graphical dataflow development environment to target Blackfin Processors for embedded system development.  Engineers using LabVIEW have the added ability to utilize NCT's noise cancellation, voice communication, echo cancellation and speech enhancement solutions, when developing communication systems.

NCT is converting its ClearSpeech noise and voice echo reduction technologies to LabVIEW building blocks for the Blackfin Processor. 

NCT, a member of The Collaborative Analog Devices' third-party program for Embedded Processing and DSP applications, has ported its ClearSpeech noise and echo cancellation technology to the ADSP-BF533 Blackfin Processor. NCT's ClearSpeech for Blackfin is available as object code libraries. Currently available is a 16 kHz sampling rate noise and echo cancellation library that is designed for hands-free telephony applications. The library requires 16 KB of instruction memory and 36 KB of data memory, and it runs at 125 MIPS, providing four user-selectable echo cancellation parameter sets and up to 18 dB of noise reduction.

Also available is an 8 kHz sampling rate noise reduction library that is designed to enhance the performance of radio communication systems used in noisy environments. Requiring only 7 KB of instruction memory, 10 KB of data memory and 15 MIPS, this library provides up to 18dB of noise reduction and the option of selecting NCT's Intelligent Squelch Filter (ISF) or NCT's Speech in Noise Detector (SND) to further enhance audio performance.

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