Output frequency distortions and other audio artifacts present challenges to designers seeking to provide more natural-sounding voice quality in digital signal processor (DSP) or microprocessor software-based systems that use sub-band frequency processing algorithms to implement noise suppression, and also require extra computation time to adjust to voice background noise levels.

National's new microphone array amplifier, which uses National’s far-field noise suppression technology, reduces background noise and improves voice communication clarity in mobile phones, two-way radios and powered headsets. Part of National’s PowerWise? energy-efficient family, the device consumes one-tenth the power (1 mA) of comparable DSP or microprocessor software-based systems, setting a new standard for low power consumption.

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