National Semiconductor introduces breakthrough analogue noise-suppression technology at one-tenth the power of DSP solutions
National Semiconductor Corp. (NYSE:NSM) announced the first in a line of audio products incorporating far-field noise suppression technology. This unique technology delivers more natural-sounding voice quality by eliminating the output frequency distortions and other audio artifacts common with digital signal processor (DSP) or microprocessor software-based systems that use sub-band frequency processing algorithms to implement noise suppression. The PowerWise LMV1088 dual-input 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. The LMV1088 dramatically improves the talker’s voice-signal-to-background-noise ratio in the communications system while retaining natural speech quality. The improvement directly translates to clearer voice signals on the receiving end of the communications link and an increase in customer satisfaction. Additionally, the voice-signal-to-background-noise improvement allows increased accuracy by voice recognition systems since the background noise is not a significant part of the signal to discriminate against.
LATEST issue 3/2020